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authorTony Luck <aegl@agluck-desktop.(none)>2009-03-31 17:25:08 -0400
committerTony Luck <tony.luck@intel.com>2009-03-31 17:25:08 -0400
commitc66b31f3926165bc1d4128adc97a064dcbab421a (patch)
tree13be75d33bd2b9d4ec45ec512ac38a2e7069062e
parent50fbe56c127efde659c686495eb1f925fd84ff0a (diff)
parent7120569c76028a6883697b7643564f0c419cfe07 (diff)
Pull pvops into release branch
Diffstat
-rw-r--r--arch/ia64/include/asm/intrinsics.h6
-rw-r--r--arch/ia64/include/asm/module.h6
-rw-r--r--arch/ia64/include/asm/native/inst.h13
-rw-r--r--arch/ia64/include/asm/native/patchlist.h38
-rw-r--r--arch/ia64/include/asm/native/pvchk_inst.h8
-rw-r--r--arch/ia64/include/asm/paravirt.h65
-rw-r--r--arch/ia64/include/asm/paravirt_patch.h143
-rw-r--r--arch/ia64/include/asm/paravirt_privop.h365
-rw-r--r--arch/ia64/include/asm/timex.h1
-rw-r--r--arch/ia64/include/asm/xen/hypervisor.h39
-rw-r--r--arch/ia64/include/asm/xen/inst.h28
-rw-r--r--arch/ia64/include/asm/xen/interface.h9
-rw-r--r--arch/ia64/include/asm/xen/minstate.h11
-rw-r--r--arch/ia64/include/asm/xen/patchlist.h38
-rw-r--r--arch/ia64/include/asm/xen/privop.h8
-rw-r--r--arch/ia64/kernel/Makefile39
-rw-r--r--arch/ia64/kernel/Makefile.gate27
-rw-r--r--arch/ia64/kernel/asm-offsets.c2
-rw-r--r--arch/ia64/kernel/efi.c1
-rw-r--r--arch/ia64/kernel/entry.S4
-rw-r--r--arch/ia64/kernel/fsys.S35
-rw-r--r--arch/ia64/kernel/gate.S171
-rw-r--r--arch/ia64/kernel/gate.lds.S17
-rw-r--r--arch/ia64/kernel/head.S10
-rw-r--r--arch/ia64/kernel/ivt.S2
-rw-r--r--arch/ia64/kernel/module.c32
-rw-r--r--arch/ia64/kernel/paravirt.c539
-rw-r--r--arch/ia64/kernel/paravirt_patch.c514
-rw-r--r--arch/ia64/kernel/paravirt_patchlist.c79
-rw-r--r--arch/ia64/kernel/paravirt_patchlist.h28
-rw-r--r--arch/ia64/kernel/paravirtentry.S99
-rw-r--r--arch/ia64/kernel/patch.c40
-rw-r--r--arch/ia64/kernel/setup.c2
-rw-r--r--arch/ia64/kernel/time.c9
-rw-r--r--arch/ia64/kernel/vmlinux.lds.S30
-rw-r--r--arch/ia64/kvm/kvm-ia64.c2
-rw-r--r--arch/ia64/kvm/vcpu.c2
-rw-r--r--arch/ia64/kvm/vtlb.c2
-rw-r--r--arch/ia64/mm/init.c9
-rw-r--r--arch/ia64/scripts/pvcheck.sed1
-rw-r--r--arch/ia64/xen/Makefile19
-rw-r--r--arch/ia64/xen/gate-data.S3
-rw-r--r--arch/ia64/xen/hypercall.S2
-rw-r--r--arch/ia64/xen/time.c48
-rw-r--r--arch/ia64/xen/xen_pv_ops.c800
45 files changed, 3134 insertions, 212 deletions
diff --git a/arch/ia64/include/asm/intrinsics.h b/arch/ia64/include/asm/intrinsics.h
index c47830e26cb..111ed522289 100644
--- a/arch/ia64/include/asm/intrinsics.h
+++ b/arch/ia64/include/asm/intrinsics.h
@@ -202,7 +202,11 @@ extern long ia64_cmpxchg_called_with_bad_pointer (void);
202 202
203#ifndef __ASSEMBLY__ 203#ifndef __ASSEMBLY__
204#if defined(CONFIG_PARAVIRT) && defined(__KERNEL__) 204#if defined(CONFIG_PARAVIRT) && defined(__KERNEL__)
205#define IA64_INTRINSIC_API(name) pv_cpu_ops.name 205#ifdef ASM_SUPPORTED
206# define IA64_INTRINSIC_API(name) paravirt_ ## name
207#else
208# define IA64_INTRINSIC_API(name) pv_cpu_ops.name
209#endif
206#define IA64_INTRINSIC_MACRO(name) paravirt_ ## name 210#define IA64_INTRINSIC_MACRO(name) paravirt_ ## name
207#else 211#else
208#define IA64_INTRINSIC_API(name) ia64_native_ ## name 212#define IA64_INTRINSIC_API(name) ia64_native_ ## name
diff --git a/arch/ia64/include/asm/module.h b/arch/ia64/include/asm/module.h
index d2da61e4c49..908eaef42a0 100644
--- a/arch/ia64/include/asm/module.h
+++ b/arch/ia64/include/asm/module.h
@@ -16,6 +16,12 @@ struct mod_arch_specific {
16 struct elf64_shdr *got; /* global offset table */ 16 struct elf64_shdr *got; /* global offset table */
17 struct elf64_shdr *opd; /* official procedure descriptors */ 17 struct elf64_shdr *opd; /* official procedure descriptors */
18 struct elf64_shdr *unwind; /* unwind-table section */ 18 struct elf64_shdr *unwind; /* unwind-table section */
19#ifdef CONFIG_PARAVIRT
20 struct elf64_shdr *paravirt_bundles;
21 /* paravirt_alt_bundle_patch table */
22 struct elf64_shdr *paravirt_insts;
23 /* paravirt_alt_inst_patch table */
24#endif
19 unsigned long gp; /* global-pointer for module */ 25 unsigned long gp; /* global-pointer for module */
20 26
21 void *core_unw_table; /* core unwind-table cookie returned by unwinder */ 27 void *core_unw_table; /* core unwind-table cookie returned by unwinder */
diff --git a/arch/ia64/include/asm/native/inst.h b/arch/ia64/include/asm/native/inst.h
index 0a1026cca4f..d2d46efb3e6 100644
--- a/arch/ia64/include/asm/native/inst.h
+++ b/arch/ia64/include/asm/native/inst.h
@@ -30,6 +30,9 @@
30#define __paravirt_work_processed_syscall_target \ 30#define __paravirt_work_processed_syscall_target \
31 ia64_work_processed_syscall 31 ia64_work_processed_syscall
32 32
33#define paravirt_fsyscall_table ia64_native_fsyscall_table
34#define paravirt_fsys_bubble_down ia64_native_fsys_bubble_down
35
33#ifdef CONFIG_PARAVIRT_GUEST_ASM_CLOBBER_CHECK 36#ifdef CONFIG_PARAVIRT_GUEST_ASM_CLOBBER_CHECK
34# define PARAVIRT_POISON 0xdeadbeefbaadf00d 37# define PARAVIRT_POISON 0xdeadbeefbaadf00d
35# define CLOBBER(clob) \ 38# define CLOBBER(clob) \
@@ -74,6 +77,11 @@
74(pred) mov reg = psr \ 77(pred) mov reg = psr \
75 CLOBBER(clob) 78 CLOBBER(clob)
76 79
80#define MOV_FROM_ITC(pred, pred_clob, reg, clob) \
81(pred) mov reg = ar.itc \
82 CLOBBER(clob) \
83 CLOBBER_PRED(pred_clob)
84
77#define MOV_TO_IFA(reg, clob) \ 85#define MOV_TO_IFA(reg, clob) \
78 mov cr.ifa = reg \ 86 mov cr.ifa = reg \
79 CLOBBER(clob) 87 CLOBBER(clob)
@@ -158,6 +166,11 @@
158#define RSM_PSR_DT \ 166#define RSM_PSR_DT \
159 rsm psr.dt 167 rsm psr.dt
160 168
169#define RSM_PSR_BE_I(clob0, clob1) \
170 rsm psr.be | psr.i \
171 CLOBBER(clob0) \
172 CLOBBER(clob1)
173
161#define SSM_PSR_DT_AND_SRLZ_I \ 174#define SSM_PSR_DT_AND_SRLZ_I \
162 ssm psr.dt \ 175 ssm psr.dt \
163 ;; \ 176 ;; \
diff --git a/arch/ia64/include/asm/native/patchlist.h b/arch/ia64/include/asm/native/patchlist.h
new file mode 100644
index 00000000000..be16ca9311b
--- /dev/null
+++ b/arch/ia64/include/asm/native/patchlist.h
@@ -0,0 +1,38 @@
1/******************************************************************************
2 * arch/ia64/include/asm/native/inst.h
3 *
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#define __paravirt_start_gate_fsyscall_patchlist \
24 __ia64_native_start_gate_fsyscall_patchlist
25#define __paravirt_end_gate_fsyscall_patchlist \
26 __ia64_native_end_gate_fsyscall_patchlist
27#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
28 __ia64_native_start_gate_brl_fsys_bubble_down_patchlist
29#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
30 __ia64_native_end_gate_brl_fsys_bubble_down_patchlist
31#define __paravirt_start_gate_vtop_patchlist \
32 __ia64_native_start_gate_vtop_patchlist
33#define __paravirt_end_gate_vtop_patchlist \
34 __ia64_native_end_gate_vtop_patchlist
35#define __paravirt_start_gate_mckinley_e9_patchlist \
36 __ia64_native_start_gate_mckinley_e9_patchlist
37#define __paravirt_end_gate_mckinley_e9_patchlist \
38 __ia64_native_end_gate_mckinley_e9_patchlist
diff --git a/arch/ia64/include/asm/native/pvchk_inst.h b/arch/ia64/include/asm/native/pvchk_inst.h
index b8e6eb1090d..8d72962ec83 100644
--- a/arch/ia64/include/asm/native/pvchk_inst.h
+++ b/arch/ia64/include/asm/native/pvchk_inst.h
@@ -180,6 +180,11 @@
180 IS_PRED_IN(pred) \ 180 IS_PRED_IN(pred) \
181 IS_RREG_OUT(reg) \ 181 IS_RREG_OUT(reg) \
182 IS_RREG_CLOB(clob) 182 IS_RREG_CLOB(clob)
183#define MOV_FROM_ITC(pred, pred_clob, reg, clob) \
184 IS_PRED_IN(pred) \
185 IS_PRED_CLOB(pred_clob) \
186 IS_RREG_OUT(reg) \
187 IS_RREG_CLOB(clob)
183#define MOV_TO_IFA(reg, clob) \ 188#define MOV_TO_IFA(reg, clob) \
184 IS_RREG_IN(reg) \ 189 IS_RREG_IN(reg) \
185 IS_RREG_CLOB(clob) 190 IS_RREG_CLOB(clob)
@@ -246,6 +251,9 @@
246 IS_RREG_CLOB(clob2) 251 IS_RREG_CLOB(clob2)
247#define RSM_PSR_DT \ 252#define RSM_PSR_DT \
248 nop 0 253 nop 0
254#define RSM_PSR_BE_I(clob0, clob1) \
255 IS_RREG_CLOB(clob0) \
256 IS_RREG_CLOB(clob1)
249#define SSM_PSR_DT_AND_SRLZ_I \ 257#define SSM_PSR_DT_AND_SRLZ_I \
250 nop 0 258 nop 0
251#define BSW_0(clob0, clob1, clob2) \ 259#define BSW_0(clob0, clob1, clob2) \
diff --git a/arch/ia64/include/asm/paravirt.h b/arch/ia64/include/asm/paravirt.h
index 2bf3636473f..2eb0a981a09 100644
--- a/arch/ia64/include/asm/paravirt.h
+++ b/arch/ia64/include/asm/paravirt.h
@@ -22,6 +22,56 @@
22#ifndef __ASM_PARAVIRT_H 22#ifndef __ASM_PARAVIRT_H
23#define __ASM_PARAVIRT_H 23#define __ASM_PARAVIRT_H
24 24
25#ifndef __ASSEMBLY__
26/******************************************************************************
27 * fsys related addresses
28 */
29struct pv_fsys_data {
30 unsigned long *fsyscall_table;
31 void *fsys_bubble_down;
32};
33
34extern struct pv_fsys_data pv_fsys_data;
35
36unsigned long *paravirt_get_fsyscall_table(void);
37char *paravirt_get_fsys_bubble_down(void);
38
39/******************************************************************************
40 * patchlist addresses for gate page
41 */
42enum pv_gate_patchlist {
43 PV_GATE_START_FSYSCALL,
44 PV_GATE_END_FSYSCALL,
45
46 PV_GATE_START_BRL_FSYS_BUBBLE_DOWN,
47 PV_GATE_END_BRL_FSYS_BUBBLE_DOWN,
48
49 PV_GATE_START_VTOP,
50 PV_GATE_END_VTOP,
51
52 PV_GATE_START_MCKINLEY_E9,
53 PV_GATE_END_MCKINLEY_E9,
54};
55
56struct pv_patchdata {
57 unsigned long start_fsyscall_patchlist;
58 unsigned long end_fsyscall_patchlist;
59 unsigned long start_brl_fsys_bubble_down_patchlist;
60 unsigned long end_brl_fsys_bubble_down_patchlist;
61 unsigned long start_vtop_patchlist;
62 unsigned long end_vtop_patchlist;
63 unsigned long start_mckinley_e9_patchlist;
64 unsigned long end_mckinley_e9_patchlist;
65
66 void *gate_section;
67};
68
69extern struct pv_patchdata pv_patchdata;
70
71unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type);
72void *paravirt_get_gate_section(void);
73#endif
74
25#ifdef CONFIG_PARAVIRT_GUEST 75#ifdef CONFIG_PARAVIRT_GUEST
26 76
27#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0 77#define PARAVIRT_HYPERVISOR_TYPE_DEFAULT 0
@@ -68,6 +118,14 @@ struct pv_init_ops {
68 int (*arch_setup_nomca)(void); 118 int (*arch_setup_nomca)(void);
69 119
70 void (*post_smp_prepare_boot_cpu)(void); 120 void (*post_smp_prepare_boot_cpu)(void);
121
122#ifdef ASM_SUPPORTED
123 unsigned long (*patch_bundle)(void *sbundle, void *ebundle,
124 unsigned long type);
125 unsigned long (*patch_inst)(unsigned long stag, unsigned long etag,
126 unsigned long type);
127#endif
128 void (*patch_branch)(unsigned long tag, unsigned long type);
71}; 129};
72 130
73extern struct pv_init_ops pv_init_ops; 131extern struct pv_init_ops pv_init_ops;
@@ -210,6 +268,8 @@ struct pv_time_ops {
210 int (*do_steal_accounting)(unsigned long *new_itm); 268 int (*do_steal_accounting)(unsigned long *new_itm);
211 269
212 void (*clocksource_resume)(void); 270 void (*clocksource_resume)(void);
271
272 unsigned long long (*sched_clock)(void);
213}; 273};
214 274
215extern struct pv_time_ops pv_time_ops; 275extern struct pv_time_ops pv_time_ops;
@@ -227,6 +287,11 @@ paravirt_do_steal_accounting(unsigned long *new_itm)
227 return pv_time_ops.do_steal_accounting(new_itm); 287 return pv_time_ops.do_steal_accounting(new_itm);
228} 288}
229 289
290static inline unsigned long long paravirt_sched_clock(void)
291{
292 return pv_time_ops.sched_clock();
293}
294
230#endif /* !__ASSEMBLY__ */ 295#endif /* !__ASSEMBLY__ */
231 296
232#else 297#else
diff --git a/arch/ia64/include/asm/paravirt_patch.h b/arch/ia64/include/asm/paravirt_patch.h
new file mode 100644
index 00000000000..128ff5db6e6
--- /dev/null
+++ b/arch/ia64/include/asm/paravirt_patch.h
@@ -0,0 +1,143 @@
1/******************************************************************************
2 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
3 * VA Linux Systems Japan K.K.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
21#ifndef __ASM_PARAVIRT_PATCH_H
22#define __ASM_PARAVIRT_PATCH_H
23
24#ifdef __ASSEMBLY__
25
26 .section .paravirt_branches, "a"
27 .previous
28#define PARAVIRT_PATCH_SITE_BR(type) \
29 { \
30 [1:] ; \
31 br.cond.sptk.many 2f ; \
32 nop.b 0 ; \
33 nop.b 0;; ; \
34 } ; \
35 2: \
36 .xdata8 ".paravirt_branches", 1b, type
37
38#else
39
40#include <linux/stringify.h>
41#include <asm/intrinsics.h>
42
43/* for binary patch */
44struct paravirt_patch_site_bundle {
45 void *sbundle;
46 void *ebundle;
47 unsigned long type;
48};
49
50/* label means the beginning of new bundle */
51#define paravirt_alt_bundle(instr, privop) \
52 "\t998:\n" \
53 "\t" instr "\n" \
54 "\t999:\n" \
55 "\t.pushsection .paravirt_bundles, \"a\"\n" \
56 "\t.popsection\n" \
57 "\t.xdata8 \".paravirt_bundles\", 998b, 999b, " \
58 __stringify(privop) "\n"
59
60
61struct paravirt_patch_bundle_elem {
62 const void *sbundle;
63 const void *ebundle;
64 unsigned long type;
65};
66
67
68struct paravirt_patch_site_inst {
69 unsigned long stag;
70 unsigned long etag;
71 unsigned long type;
72};
73
74#define paravirt_alt_inst(instr, privop) \
75 "\t[998:]\n" \
76 "\t" instr "\n" \
77 "\t[999:]\n" \
78 "\t.pushsection .paravirt_insts, \"a\"\n" \
79 "\t.popsection\n" \
80 "\t.xdata8 \".paravirt_insts\", 998b, 999b, " \
81 __stringify(privop) "\n"
82
83struct paravirt_patch_site_branch {
84 unsigned long tag;
85 unsigned long type;
86};
87
88struct paravirt_patch_branch_target {
89 const void *entry;
90 unsigned long type;
91};
92
93void
94__paravirt_patch_apply_branch(
95 unsigned long tag, unsigned long type,
96 const struct paravirt_patch_branch_target *entries,
97 unsigned int nr_entries);
98
99void
100paravirt_patch_reloc_br(unsigned long tag, const void *target);
101
102void
103paravirt_patch_reloc_brl(unsigned long tag, const void *target);
104
105
106#if defined(ASM_SUPPORTED) && defined(CONFIG_PARAVIRT)
107unsigned long
108ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type);
109
110unsigned long
111__paravirt_patch_apply_bundle(void *sbundle, void *ebundle, unsigned long type,
112 const struct paravirt_patch_bundle_elem *elems,
113 unsigned long nelems,
114 const struct paravirt_patch_bundle_elem **found);
115
116void
117paravirt_patch_apply_bundle(const struct paravirt_patch_site_bundle *start,
118 const struct paravirt_patch_site_bundle *end);
119
120void
121paravirt_patch_apply_inst(const struct paravirt_patch_site_inst *start,
122 const struct paravirt_patch_site_inst *end);
123
124void paravirt_patch_apply(void);
125#else
126#define paravirt_patch_apply_bundle(start, end) do { } while (0)
127#define paravirt_patch_apply_inst(start, end) do { } while (0)
128#define paravirt_patch_apply() do { } while (0)
129#endif
130
131#endif /* !__ASSEMBLEY__ */
132
133#endif /* __ASM_PARAVIRT_PATCH_H */
134
135/*
136 * Local variables:
137 * mode: C
138 * c-set-style: "linux"
139 * c-basic-offset: 8
140 * tab-width: 8
141 * indent-tabs-mode: t
142 * End:
143 */
diff --git a/arch/ia64/include/asm/paravirt_privop.h b/arch/ia64/include/asm/paravirt_privop.h
index 33c8e55f577..3d2951130b5 100644
--- a/arch/ia64/include/asm/paravirt_privop.h
+++ b/arch/ia64/include/asm/paravirt_privop.h
@@ -33,7 +33,7 @@
33 */ 33 */
34 34
35struct pv_cpu_ops { 35struct pv_cpu_ops {
36 void (*fc)(unsigned long addr); 36 void (*fc)(void *addr);
37 unsigned long (*thash)(unsigned long addr); 37 unsigned long (*thash)(unsigned long addr);
38 unsigned long (*get_cpuid)(int index); 38 unsigned long (*get_cpuid)(int index);
39 unsigned long (*get_pmd)(int index); 39 unsigned long (*get_pmd)(int index);
@@ -60,12 +60,18 @@ extern unsigned long ia64_native_getreg_func(int regnum);
60/* Instructions paravirtualized for performance */ 60/* Instructions paravirtualized for performance */
61/************************************************/ 61/************************************************/
62 62
63#ifndef ASM_SUPPORTED
64#define paravirt_ssm_i() pv_cpu_ops.ssm_i()
65#define paravirt_rsm_i() pv_cpu_ops.rsm_i()
66#define __paravirt_getreg() pv_cpu_ops.getreg()
67#endif
68
63/* mask for ia64_native_ssm/rsm() must be constant.("i" constraing). 69/* mask for ia64_native_ssm/rsm() must be constant.("i" constraing).
64 * static inline function doesn't satisfy it. */ 70 * static inline function doesn't satisfy it. */
65#define paravirt_ssm(mask) \ 71#define paravirt_ssm(mask) \
66 do { \ 72 do { \
67 if ((mask) == IA64_PSR_I) \ 73 if ((mask) == IA64_PSR_I) \
68 pv_cpu_ops.ssm_i(); \ 74 paravirt_ssm_i(); \
69 else \ 75 else \
70 ia64_native_ssm(mask); \ 76 ia64_native_ssm(mask); \
71 } while (0) 77 } while (0)
@@ -73,7 +79,7 @@ extern unsigned long ia64_native_getreg_func(int regnum);
73#define paravirt_rsm(mask) \ 79#define paravirt_rsm(mask) \
74 do { \ 80 do { \
75 if ((mask) == IA64_PSR_I) \ 81 if ((mask) == IA64_PSR_I) \
76 pv_cpu_ops.rsm_i(); \ 82 paravirt_rsm_i(); \
77 else \ 83 else \
78 ia64_native_rsm(mask); \ 84 ia64_native_rsm(mask); \
79 } while (0) 85 } while (0)
@@ -86,7 +92,7 @@ extern unsigned long ia64_native_getreg_func(int regnum);
86 if ((reg) == _IA64_REG_IP) \ 92 if ((reg) == _IA64_REG_IP) \
87 res = ia64_native_getreg(_IA64_REG_IP); \ 93 res = ia64_native_getreg(_IA64_REG_IP); \
88 else \ 94 else \
89 res = pv_cpu_ops.getreg(reg); \ 95 res = __paravirt_getreg(reg); \
90 res; \ 96 res; \
91 }) 97 })
92 98
@@ -112,6 +118,12 @@ void paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch);
112 118
113#endif /* CONFIG_PARAVIRT */ 119#endif /* CONFIG_PARAVIRT */
114 120
121#if defined(CONFIG_PARAVIRT) && defined(ASM_SUPPORTED)
122#define paravirt_dv_serialize_data() ia64_dv_serialize_data()
123#else
124#define paravirt_dv_serialize_data() /* nothing */
125#endif
126
115/* these routines utilize privilege-sensitive or performance-sensitive 127/* these routines utilize privilege-sensitive or performance-sensitive
116 * privileged instructions so the code must be replaced with 128 * privileged instructions so the code must be replaced with
117 * paravirtualized versions */ 129 * paravirtualized versions */
@@ -121,4 +133,349 @@ void paravirt_cpu_asm_init(const struct pv_cpu_asm_switch *cpu_asm_switch);
121 IA64_PARAVIRT_ASM_FUNC(work_processed_syscall) 133 IA64_PARAVIRT_ASM_FUNC(work_processed_syscall)
122#define ia64_leave_kernel IA64_PARAVIRT_ASM_FUNC(leave_kernel) 134#define ia64_leave_kernel IA64_PARAVIRT_ASM_FUNC(leave_kernel)
123 135
136
137#if defined(CONFIG_PARAVIRT)
138/******************************************************************************
139 * binary patching infrastructure
140 */
141#define PARAVIRT_PATCH_TYPE_FC 1
142#define PARAVIRT_PATCH_TYPE_THASH 2
143#define PARAVIRT_PATCH_TYPE_GET_CPUID 3
144#define PARAVIRT_PATCH_TYPE_GET_PMD 4
145#define PARAVIRT_PATCH_TYPE_PTCGA 5
146#define PARAVIRT_PATCH_TYPE_GET_RR 6
147#define PARAVIRT_PATCH_TYPE_SET_RR 7
148#define PARAVIRT_PATCH_TYPE_SET_RR0_TO_RR4 8
149#define PARAVIRT_PATCH_TYPE_SSM_I 9
150#define PARAVIRT_PATCH_TYPE_RSM_I 10
151#define PARAVIRT_PATCH_TYPE_GET_PSR_I 11
152#define PARAVIRT_PATCH_TYPE_INTRIN_LOCAL_IRQ_RESTORE 12
153
154/* PARAVIRT_PATY_TYPE_[GS]ETREG + _IA64_REG_xxx */
155#define PARAVIRT_PATCH_TYPE_GETREG 0x10000000
156#define PARAVIRT_PATCH_TYPE_SETREG 0x20000000
157
158/*
159 * struct task_struct* (*ia64_switch_to)(void* next_task);
160 * void *ia64_leave_syscall;
161 * void *ia64_work_processed_syscall
162 * void *ia64_leave_kernel;
163 */
164
165#define PARAVIRT_PATCH_TYPE_BR_START 0x30000000
166#define PARAVIRT_PATCH_TYPE_BR_SWITCH_TO \
167 (PARAVIRT_PATCH_TYPE_BR_START + 0)
168#define PARAVIRT_PATCH_TYPE_BR_LEAVE_SYSCALL \
169 (PARAVIRT_PATCH_TYPE_BR_START + 1)
170#define PARAVIRT_PATCH_TYPE_BR_WORK_PROCESSED_SYSCALL \
171 (PARAVIRT_PATCH_TYPE_BR_START + 2)
172#define PARAVIRT_PATCH_TYPE_BR_LEAVE_KERNEL \
173 (PARAVIRT_PATCH_TYPE_BR_START + 3)
174
175#ifdef ASM_SUPPORTED
176#include <asm/paravirt_patch.h>
177
178/*
179 * pv_cpu_ops calling stub.
180 * normal function call convension can't be written by gcc
181 * inline assembly.
182 *
183 * from the caller's point of view,
184 * the following registers will be clobbered.
185 * r2, r3
186 * r8-r15
187 * r16, r17
188 * b6, b7
189 * p6-p15
190 * ar.ccv
191 *
192 * from the callee's point of view ,
193 * the following registers can be used.
194 * r2, r3: scratch
195 * r8: scratch, input argument0 and return value
196 * r0-r15: scratch, input argument1-5
197 * b6: return pointer
198 * b7: scratch
199 * p6-p15: scratch
200 * ar.ccv: scratch
201 *
202 * other registers must not be changed. especially
203 * b0: rp: preserved. gcc ignores b0 in clobbered register.
204 * r16: saved gp
205 */
206/* 5 bundles */
207#define __PARAVIRT_BR \
208 ";;\n" \
209 "{ .mlx\n" \
210 "nop 0\n" \
211 "movl r2 = %[op_addr]\n"/* get function pointer address */ \
212 ";;\n" \
213 "}\n" \
214 "1:\n" \
215 "{ .mii\n" \
216 "ld8 r2 = [r2]\n" /* load function descriptor address */ \
217 "mov r17 = ip\n" /* get ip to calc return address */ \
218 "mov r16 = gp\n" /* save gp */ \
219 ";;\n" \
220 "}\n" \
221 "{ .mii\n" \
222 "ld8 r3 = [r2], 8\n" /* load entry address */ \
223 "adds r17 = 1f - 1b, r17\n" /* calculate return address */ \
224 ";;\n" \
225 "mov b7 = r3\n" /* set entry address */ \
226 "}\n" \
227 "{ .mib\n" \
228 "ld8 gp = [r2]\n" /* load gp value */ \
229 "mov b6 = r17\n" /* set return address */ \
230 "br.cond.sptk.few b7\n" /* intrinsics are very short isns */ \
231 "}\n" \
232 "1:\n" \
233 "{ .mii\n" \
234 "mov gp = r16\n" /* restore gp value */ \
235 "nop 0\n" \
236 "nop 0\n" \
237 ";;\n" \
238 "}\n"
239
240#define PARAVIRT_OP(op) \
241 [op_addr] "i"(&pv_cpu_ops.op)
242
243#define PARAVIRT_TYPE(type) \
244 PARAVIRT_PATCH_TYPE_ ## type
245
246#define PARAVIRT_REG_CLOBBERS0 \
247 "r2", "r3", /*"r8",*/ "r9", "r10", "r11", "r14", \
248 "r15", "r16", "r17"
249
250#define PARAVIRT_REG_CLOBBERS1 \
251 "r2","r3", /*"r8",*/ "r9", "r10", "r11", "r14", \
252 "r15", "r16", "r17"
253
254#define PARAVIRT_REG_CLOBBERS2 \
255 "r2", "r3", /*"r8", "r9",*/ "r10", "r11", "r14", \
256 "r15", "r16", "r17"
257
258#define PARAVIRT_REG_CLOBBERS5 \
259 "r2", "r3", /*"r8", "r9", "r10", "r11", "r14",*/ \
260 "r15", "r16", "r17"
261
262#define PARAVIRT_BR_CLOBBERS \
263 "b6", "b7"
264
265#define PARAVIRT_PR_CLOBBERS \
266 "p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15"
267
268#define PARAVIRT_AR_CLOBBERS \
269 "ar.ccv"
270
271#define PARAVIRT_CLOBBERS0 \
272 PARAVIRT_REG_CLOBBERS0, \
273 PARAVIRT_BR_CLOBBERS, \
274 PARAVIRT_PR_CLOBBERS, \
275 PARAVIRT_AR_CLOBBERS, \
276 "memory"
277
278#define PARAVIRT_CLOBBERS1 \
279 PARAVIRT_REG_CLOBBERS1, \
280 PARAVIRT_BR_CLOBBERS, \
281 PARAVIRT_PR_CLOBBERS, \
282 PARAVIRT_AR_CLOBBERS, \
283 "memory"
284
285#define PARAVIRT_CLOBBERS2 \
286 PARAVIRT_REG_CLOBBERS2, \
287 PARAVIRT_BR_CLOBBERS, \
288 PARAVIRT_PR_CLOBBERS, \
289 PARAVIRT_AR_CLOBBERS, \
290 "memory"
291
292#define PARAVIRT_CLOBBERS5 \
293 PARAVIRT_REG_CLOBBERS5, \
294 PARAVIRT_BR_CLOBBERS, \
295 PARAVIRT_PR_CLOBBERS, \
296 PARAVIRT_AR_CLOBBERS, \
297 "memory"
298
299#define PARAVIRT_BR0(op, type) \
300 register unsigned long ia64_clobber asm ("r8"); \
301 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
302 PARAVIRT_TYPE(type)) \
303 : "=r"(ia64_clobber) \
304 : PARAVIRT_OP(op) \
305 : PARAVIRT_CLOBBERS0)
306
307#define PARAVIRT_BR0_RET(op, type) \
308 register unsigned long ia64_intri_res asm ("r8"); \
309 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
310 PARAVIRT_TYPE(type)) \
311 : "=r"(ia64_intri_res) \
312 : PARAVIRT_OP(op) \
313 : PARAVIRT_CLOBBERS0)
314
315#define PARAVIRT_BR1(op, type, arg1) \
316 register unsigned long __##arg1 asm ("r8") = arg1; \
317 register unsigned long ia64_clobber asm ("r8"); \
318 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
319 PARAVIRT_TYPE(type)) \
320 : "=r"(ia64_clobber) \
321 : PARAVIRT_OP(op), "0"(__##arg1) \
322 : PARAVIRT_CLOBBERS1)
323
324#define PARAVIRT_BR1_RET(op, type, arg1) \
325 register unsigned long ia64_intri_res asm ("r8"); \
326 register unsigned long __##arg1 asm ("r8") = arg1; \
327 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
328 PARAVIRT_TYPE(type)) \
329 : "=r"(ia64_intri_res) \
330 : PARAVIRT_OP(op), "0"(__##arg1) \
331 : PARAVIRT_CLOBBERS1)
332
333#define PARAVIRT_BR1_VOID(op, type, arg1) \
334 register void *__##arg1 asm ("r8") = arg1; \
335 register unsigned long ia64_clobber asm ("r8"); \
336 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
337 PARAVIRT_TYPE(type)) \
338 : "=r"(ia64_clobber) \
339 : PARAVIRT_OP(op), "0"(__##arg1) \
340 : PARAVIRT_CLOBBERS1)
341
342#define PARAVIRT_BR2(op, type, arg1, arg2) \
343 register unsigned long __##arg1 asm ("r8") = arg1; \
344 register unsigned long __##arg2 asm ("r9") = arg2; \
345 register unsigned long ia64_clobber1 asm ("r8"); \
346 register unsigned long ia64_clobber2 asm ("r9"); \
347 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
348 PARAVIRT_TYPE(type)) \
349 : "=r"(ia64_clobber1), "=r"(ia64_clobber2) \
350 : PARAVIRT_OP(op), "0"(__##arg1), "1"(__##arg2) \
351 : PARAVIRT_CLOBBERS2)
352
353
354#define PARAVIRT_DEFINE_CPU_OP0(op, type) \
355 static inline void \
356 paravirt_ ## op (void) \
357 { \
358 PARAVIRT_BR0(op, type); \
359 }
360
361#define PARAVIRT_DEFINE_CPU_OP0_RET(op, type) \
362 static inline unsigned long \
363 paravirt_ ## op (void) \
364 { \
365 PARAVIRT_BR0_RET(op, type); \
366 return ia64_intri_res; \
367 }
368
369#define PARAVIRT_DEFINE_CPU_OP1_VOID(op, type) \
370 static inline void \
371 paravirt_ ## op (void *arg1) \
372 { \
373 PARAVIRT_BR1_VOID(op, type, arg1); \
374 }
375
376#define PARAVIRT_DEFINE_CPU_OP1(op, type) \
377 static inline void \
378 paravirt_ ## op (unsigned long arg1) \
379 { \
380 PARAVIRT_BR1(op, type, arg1); \
381 }
382
383#define PARAVIRT_DEFINE_CPU_OP1_RET(op, type) \
384 static inline unsigned long \
385 paravirt_ ## op (unsigned long arg1) \
386 { \
387 PARAVIRT_BR1_RET(op, type, arg1); \
388 return ia64_intri_res; \
389 }
390
391#define PARAVIRT_DEFINE_CPU_OP2(op, type) \
392 static inline void \
393 paravirt_ ## op (unsigned long arg1, \
394 unsigned long arg2) \
395 { \
396 PARAVIRT_BR2(op, type, arg1, arg2); \
397 }
398
399
400PARAVIRT_DEFINE_CPU_OP1_VOID(fc, FC);
401PARAVIRT_DEFINE_CPU_OP1_RET(thash, THASH)
402PARAVIRT_DEFINE_CPU_OP1_RET(get_cpuid, GET_CPUID)
403PARAVIRT_DEFINE_CPU_OP1_RET(get_pmd, GET_PMD)
404PARAVIRT_DEFINE_CPU_OP2(ptcga, PTCGA)
405PARAVIRT_DEFINE_CPU_OP1_RET(get_rr, GET_RR)
406PARAVIRT_DEFINE_CPU_OP2(set_rr, SET_RR)
407PARAVIRT_DEFINE_CPU_OP0(ssm_i, SSM_I)
408PARAVIRT_DEFINE_CPU_OP0(rsm_i, RSM_I)
409PARAVIRT_DEFINE_CPU_OP0_RET(get_psr_i, GET_PSR_I)
410PARAVIRT_DEFINE_CPU_OP1(intrin_local_irq_restore, INTRIN_LOCAL_IRQ_RESTORE)
411
412static inline void
413paravirt_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
414 unsigned long val2, unsigned long val3,
415 unsigned long val4)
416{
417 register unsigned long __val0 asm ("r8") = val0;
418 register unsigned long __val1 asm ("r9") = val1;
419 register unsigned long __val2 asm ("r10") = val2;
420 register unsigned long __val3 asm ("r11") = val3;
421 register unsigned long __val4 asm ("r14") = val4;
422
423 register unsigned long ia64_clobber0 asm ("r8");
424 register unsigned long ia64_clobber1 asm ("r9");
425 register unsigned long ia64_clobber2 asm ("r10");
426 register unsigned long ia64_clobber3 asm ("r11");
427 register unsigned long ia64_clobber4 asm ("r14");
428
429 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR,
430 PARAVIRT_TYPE(SET_RR0_TO_RR4))
431 : "=r"(ia64_clobber0),
432 "=r"(ia64_clobber1),
433 "=r"(ia64_clobber2),
434 "=r"(ia64_clobber3),
435 "=r"(ia64_clobber4)
436 : PARAVIRT_OP(set_rr0_to_rr4),
437 "0"(__val0), "1"(__val1), "2"(__val2),
438 "3"(__val3), "4"(__val4)
439 : PARAVIRT_CLOBBERS5);
440}
441
442/* unsigned long paravirt_getreg(int reg) */
443#define __paravirt_getreg(reg) \
444 ({ \
445 register unsigned long ia64_intri_res asm ("r8"); \
446 register unsigned long __reg asm ("r8") = (reg); \
447 \
448 BUILD_BUG_ON(!__builtin_constant_p(reg)); \
449 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
450 PARAVIRT_TYPE(GETREG) \
451 + (reg)) \
452 : "=r"(ia64_intri_res) \
453 : PARAVIRT_OP(getreg), "0"(__reg) \
454 : PARAVIRT_CLOBBERS1); \
455 \
456 ia64_intri_res; \
457 })
458
459/* void paravirt_setreg(int reg, unsigned long val) */
460#define paravirt_setreg(reg, val) \
461 do { \
462 register unsigned long __val asm ("r8") = val; \
463 register unsigned long __reg asm ("r9") = reg; \
464 register unsigned long ia64_clobber1 asm ("r8"); \
465 register unsigned long ia64_clobber2 asm ("r9"); \
466 \
467 BUILD_BUG_ON(!__builtin_constant_p(reg)); \
468 asm volatile (paravirt_alt_bundle(__PARAVIRT_BR, \
469 PARAVIRT_TYPE(SETREG) \
470 + (reg)) \
471 : "=r"(ia64_clobber1), \
472 "=r"(ia64_clobber2) \
473 : PARAVIRT_OP(setreg), \
474 "1"(__reg), "0"(__val) \
475 : PARAVIRT_CLOBBERS2); \
476 } while (0)
477
478#endif /* ASM_SUPPORTED */
479#endif /* CONFIG_PARAVIRT && ASM_SUPPOTED */
480
124#endif /* _ASM_IA64_PARAVIRT_PRIVOP_H */ 481#endif /* _ASM_IA64_PARAVIRT_PRIVOP_H */
diff --git a/arch/ia64/include/asm/timex.h b/arch/ia64/include/asm/timex.h
index 4e03cfe74a0..86c7db86118 100644
--- a/arch/ia64/include/asm/timex.h
+++ b/arch/ia64/include/asm/timex.h
@@ -40,5 +40,6 @@ get_cycles (void)
40} 40}
41 41
42extern void ia64_cpu_local_tick (void); 42extern void ia64_cpu_local_tick (void);
43extern unsigned long long ia64_native_sched_clock (void);
43 44
44#endif /* _ASM_IA64_TIMEX_H */ 45#endif /* _ASM_IA64_TIMEX_H */
diff --git a/arch/ia64/include/asm/xen/hypervisor.h b/arch/ia64/include/asm/xen/hypervisor.h
index 7a804e80fc6..e425227a418 100644
--- a/arch/ia64/include/asm/xen/hypervisor.h
+++ b/arch/ia64/include/asm/xen/hypervisor.h
@@ -33,9 +33,6 @@
33#ifndef _ASM_IA64_XEN_HYPERVISOR_H 33#ifndef _ASM_IA64_XEN_HYPERVISOR_H
34#define _ASM_IA64_XEN_HYPERVISOR_H 34#define _ASM_IA64_XEN_HYPERVISOR_H
35 35
36#ifdef CONFIG_XEN
37
38#include <linux/init.h>
39#include <xen/interface/xen.h> 36#include <xen/interface/xen.h>
40#include <xen/interface/version.h> /* to compile feature.c */ 37#include <xen/interface/version.h> /* to compile feature.c */
41#include <xen/features.h> /* to comiple xen-netfront.c */ 38#include <xen/features.h> /* to comiple xen-netfront.c */
@@ -43,22 +40,32 @@
43 40
44/* xen_domain_type is set before executing any C code by early_xen_setup */ 41/* xen_domain_type is set before executing any C code by early_xen_setup */
45enum xen_domain_type { 42enum xen_domain_type {
46 XEN_NATIVE, 43 XEN_NATIVE, /* running on bare hardware */
47 XEN_PV_DOMAIN, 44 XEN_PV_DOMAIN, /* running in a PV domain */
48 XEN_HVM_DOMAIN, 45 XEN_HVM_DOMAIN, /* running in a Xen hvm domain*/
49}; 46};
50 47
48#ifdef CONFIG_XEN
51extern enum xen_domain_type xen_domain_type; 49extern enum xen_domain_type xen_domain_type;
50#else
51#define xen_domain_type XEN_NATIVE
52#endif
52 53
53#define xen_domain() (xen_domain_type != XEN_NATIVE) 54#define xen_domain() (xen_domain_type != XEN_NATIVE)
54#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN) 55#define xen_pv_domain() (xen_domain() && \
55#define xen_initial_domain() (xen_pv_domain() && \ 56 xen_domain_type == XEN_PV_DOMAIN)
57#define xen_hvm_domain() (xen_domain() && \
58 xen_domain_type == XEN_HVM_DOMAIN)
59
60#ifdef CONFIG_XEN_DOM0
61#define xen_initial_domain() (xen_pv_domain() && \
56 (xen_start_info->flags & SIF_INITDOMAIN)) 62 (xen_start_info->flags & SIF_INITDOMAIN))
57#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN) 63#else
64#define xen_initial_domain() (0)
65#endif
58 66
59/* deprecated. remove this */
60#define is_running_on_xen() (xen_domain_type == XEN_PV_DOMAIN)
61 67
68#ifdef CONFIG_XEN
62extern struct shared_info *HYPERVISOR_shared_info; 69extern struct shared_info *HYPERVISOR_shared_info;
63extern struct start_info *xen_start_info; 70extern struct start_info *xen_start_info;
64 71
@@ -74,16 +81,6 @@ void force_evtchn_callback(void);
74 81
75/* For setup_arch() in arch/ia64/kernel/setup.c */ 82/* For setup_arch() in arch/ia64/kernel/setup.c */
76void xen_ia64_enable_opt_feature(void); 83void xen_ia64_enable_opt_feature(void);
77
78#else /* CONFIG_XEN */
79
80#define xen_domain() (0)
81#define xen_pv_domain() (0)
82#define xen_initial_domain() (0)
83#define xen_hvm_domain() (0)
84#define is_running_on_xen() (0) /* deprecated. remove this */
85#endif 84#endif
86 85
87#define is_initial_xendomain() (0) /* deprecated. remove this */
88
89#endif /* _ASM_IA64_XEN_HYPERVISOR_H */ 86#endif /* _ASM_IA64_XEN_HYPERVISOR_H */
diff --git a/arch/ia64/include/asm/xen/inst.h b/arch/ia64/include/asm/xen/inst.h
index 19c2ae1d878..c53a4761120 100644
--- a/arch/ia64/include/asm/xen/inst.h
+++ b/arch/ia64/include/asm/xen/inst.h
@@ -33,6 +33,9 @@
33#define __paravirt_work_processed_syscall_target \ 33#define __paravirt_work_processed_syscall_target \
34 xen_work_processed_syscall 34 xen_work_processed_syscall
35 35
36#define paravirt_fsyscall_table xen_fsyscall_table
37#define paravirt_fsys_bubble_down xen_fsys_bubble_down
38
36#define MOV_FROM_IFA(reg) \ 39#define MOV_FROM_IFA(reg) \
37 movl reg = XSI_IFA; \ 40 movl reg = XSI_IFA; \
38 ;; \ 41 ;; \
@@ -110,6 +113,27 @@
110.endm 113.endm
111#define MOV_FROM_PSR(pred, reg, clob) __MOV_FROM_PSR pred, reg, clob 114#define MOV_FROM_PSR(pred, reg, clob) __MOV_FROM_PSR pred, reg, clob
112 115
116/* assuming ar.itc is read with interrupt disabled. */
117#define MOV_FROM_ITC(pred, pred_clob, reg, clob) \
118(pred) movl clob = XSI_ITC_OFFSET; \
119 ;; \
120(pred) ld8 clob = [clob]; \
121(pred) mov reg = ar.itc; \
122 ;; \
123(pred) add reg = reg, clob; \
124 ;; \
125(pred) movl clob = XSI_ITC_LAST; \
126 ;; \
127(pred) ld8 clob = [clob]; \
128 ;; \
129(pred) cmp.geu.unc pred_clob, p0 = clob, reg; \
130 ;; \
131(pred_clob) add reg = 1, clob; \
132 ;; \
133(pred) movl clob = XSI_ITC_LAST; \
134 ;; \
135(pred) st8 [clob] = reg
136
113 137
114#define MOV_TO_IFA(reg, clob) \ 138#define MOV_TO_IFA(reg, clob) \
115 movl clob = XSI_IFA; \ 139 movl clob = XSI_IFA; \
@@ -362,6 +386,10 @@
362#define RSM_PSR_DT \ 386#define RSM_PSR_DT \
363 XEN_HYPER_RSM_PSR_DT 387 XEN_HYPER_RSM_PSR_DT
364 388
389#define RSM_PSR_BE_I(clob0, clob1) \
390 RSM_PSR_I(p0, clob0, clob1); \
391 rum psr.be
392
365#define SSM_PSR_DT_AND_SRLZ_I \ 393#define SSM_PSR_DT_AND_SRLZ_I \
366 XEN_HYPER_SSM_PSR_DT 394 XEN_HYPER_SSM_PSR_DT
367 395
diff --git a/arch/ia64/include/asm/xen/interface.h b/arch/ia64/include/asm/xen/interface.h
index f00fab40854..e951e740bdf 100644
--- a/arch/ia64/include/asm/xen/interface.h
+++ b/arch/ia64/include/asm/xen/interface.h
@@ -209,6 +209,15 @@ struct mapped_regs {
209 unsigned long krs[8]; /* kernel registers */ 209 unsigned long krs[8]; /* kernel registers */
210 unsigned long tmp[16]; /* temp registers 210 unsigned long tmp[16]; /* temp registers
211 (e.g. for hyperprivops) */ 211 (e.g. for hyperprivops) */
212
213 /* itc paravirtualization
214 * vAR.ITC = mAR.ITC + itc_offset
215 * itc_last is one which was lastly passed to
216 * the guest OS in order to prevent it from
217 * going backwords.
218 */
219 unsigned long itc_offset;
220 unsigned long itc_last;
212 }; 221 };
213 }; 222 };
214}; 223};
diff --git a/arch/ia64/include/asm/xen/minstate.h b/arch/ia64/include/asm/xen/minstate.h
index 4d92d9bbda7..c57fa910f2c 100644
--- a/arch/ia64/include/asm/xen/minstate.h
+++ b/arch/ia64/include/asm/xen/minstate.h
@@ -1,3 +1,12 @@
1
2#ifdef CONFIG_VIRT_CPU_ACCOUNTING
3/* read ar.itc in advance, and use it before leaving bank 0 */
4#define XEN_ACCOUNT_GET_STAMP \
5 MOV_FROM_ITC(pUStk, p6, r20, r2);
6#else
7#define XEN_ACCOUNT_GET_STAMP
8#endif
9
1/* 10/*
2 * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves 11 * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves
3 * the minimum state necessary that allows us to turn psr.ic back 12 * the minimum state necessary that allows us to turn psr.ic back
@@ -123,7 +132,7 @@
123 ;; \ 132 ;; \
124.mem.offset 0,0; st8.spill [r16]=r2,16; \ 133.mem.offset 0,0; st8.spill [r16]=r2,16; \
125.mem.offset 8,0; st8.spill [r17]=r3,16; \ 134.mem.offset 8,0; st8.spill [r17]=r3,16; \
126 ACCOUNT_GET_STAMP \ 135 XEN_ACCOUNT_GET_STAMP \
127 adds r2=IA64_PT_REGS_R16_OFFSET,r1; \ 136 adds r2=IA64_PT_REGS_R16_OFFSET,r1; \
128 ;; \ 137 ;; \
129 EXTRA; \ 138 EXTRA; \
diff --git a/arch/ia64/include/asm/xen/patchlist.h b/arch/ia64/include/asm/xen/patchlist.h
new file mode 100644
index 00000000000..eae944e8884
--- /dev/null
+++ b/arch/ia64/include/asm/xen/patchlist.h
@@ -0,0 +1,38 @@
1/******************************************************************************
2 * arch/ia64/include/asm/xen/patchlist.h
3 *
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#define __paravirt_start_gate_fsyscall_patchlist \
24 __xen_start_gate_fsyscall_patchlist
25#define __paravirt_end_gate_fsyscall_patchlist \
26 __xen_end_gate_fsyscall_patchlist
27#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
28 __xen_start_gate_brl_fsys_bubble_down_patchlist
29#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
30 __xen_end_gate_brl_fsys_bubble_down_patchlist
31#define __paravirt_start_gate_vtop_patchlist \
32 __xen_start_gate_vtop_patchlist
33#define __paravirt_end_gate_vtop_patchlist \
34 __xen_end_gate_vtop_patchlist
35#define __paravirt_start_gate_mckinley_e9_patchlist \
36 __xen_start_gate_mckinley_e9_patchlist
37#define __paravirt_end_gate_mckinley_e9_patchlist \
38 __xen_end_gate_mckinley_e9_patchlist
diff --git a/arch/ia64/include/asm/xen/privop.h b/arch/ia64/include/asm/xen/privop.h
index 71ec7546e10..fb4ec5e0b06 100644
--- a/arch/ia64/include/asm/xen/privop.h
+++ b/arch/ia64/include/asm/xen/privop.h
@@ -55,6 +55,8 @@
55#define XSI_BANK1_R16 (XSI_BASE + XSI_BANK1_R16_OFS) 55#define XSI_BANK1_R16 (XSI_BASE + XSI_BANK1_R16_OFS)
56#define XSI_BANKNUM (XSI_BASE + XSI_BANKNUM_OFS) 56#define XSI_BANKNUM (XSI_BASE + XSI_BANKNUM_OFS)
57#define XSI_IHA (XSI_BASE + XSI_IHA_OFS) 57#define XSI_IHA (XSI_BASE + XSI_IHA_OFS)
58#define XSI_ITC_OFFSET (XSI_BASE + XSI_ITC_OFFSET_OFS)
59#define XSI_ITC_LAST (XSI_BASE + XSI_ITC_LAST_OFS)
58#endif 60#endif
59 61
60#ifndef __ASSEMBLY__ 62#ifndef __ASSEMBLY__
@@ -67,7 +69,7 @@
67 * may have different semantics depending on whether they are executed 69 * may have different semantics depending on whether they are executed
68 * at PL0 vs PL!=0. When paravirtualized, these instructions mustn't 70 * at PL0 vs PL!=0. When paravirtualized, these instructions mustn't
69 * be allowed to execute directly, lest incorrect semantics result. */ 71 * be allowed to execute directly, lest incorrect semantics result. */
70extern void xen_fc(unsigned long addr); 72extern void xen_fc(void *addr);
71extern unsigned long xen_thash(unsigned long addr); 73extern unsigned long xen_thash(unsigned long addr);
72 74
73/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag" 75/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
@@ -80,8 +82,10 @@ extern unsigned long xen_thash(unsigned long addr);
80extern unsigned long xen_get_cpuid(int index); 82extern unsigned long xen_get_cpuid(int index);
81extern unsigned long xen_get_pmd(int index); 83extern unsigned long xen_get_pmd(int index);
82 84
85#ifndef ASM_SUPPORTED
83extern unsigned long xen_get_eflag(void); /* see xen_ia64_getreg */ 86extern unsigned long xen_get_eflag(void); /* see xen_ia64_getreg */
84extern void xen_set_eflag(unsigned long); /* see xen_ia64_setreg */ 87extern void xen_set_eflag(unsigned long); /* see xen_ia64_setreg */
88#endif
85 89
86/************************************************/ 90/************************************************/
87/* Instructions paravirtualized for performance */ 91/* Instructions paravirtualized for performance */
@@ -106,6 +110,7 @@ extern void xen_set_eflag(unsigned long); /* see xen_ia64_setreg */
106#define xen_get_virtual_pend() \ 110#define xen_get_virtual_pend() \
107 (*(((uint8_t *)XEN_MAPPEDREGS->interrupt_mask_addr) - 1)) 111 (*(((uint8_t *)XEN_MAPPEDREGS->interrupt_mask_addr) - 1))
108 112
113#ifndef ASM_SUPPORTED
109/* Although all privileged operations can be left to trap and will 114/* Although all privileged operations can be left to trap and will
110 * be properly handled by Xen, some are frequent enough that we use 115 * be properly handled by Xen, some are frequent enough that we use
111 * hyperprivops for performance. */ 116 * hyperprivops for performance. */
@@ -123,6 +128,7 @@ extern void xen_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
123 unsigned long val4); 128 unsigned long val4);
124extern void xen_set_kr(unsigned long index, unsigned long val); 129extern void xen_set_kr(unsigned long index, unsigned long val);
125extern void xen_ptcga(unsigned long addr, unsigned long size); 130extern void xen_ptcga(unsigned long addr, unsigned long size);
131#endif /* !ASM_SUPPORTED */
126 132
127#endif /* !__ASSEMBLY__ */ 133#endif /* !__ASSEMBLY__ */
128 134
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index f2778f2c4fd..5628e9a990a 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -5,7 +5,7 @@
5extra-y := head.o init_task.o vmlinux.lds 5extra-y := head.o init_task.o vmlinux.lds
6 6
7obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o \ 7obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o \
8 irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o \ 8 irq_lsapic.o ivt.o machvec.o pal.o paravirt_patchlist.o patch.o process.o perfmon.o ptrace.o sal.o \
9 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \ 9 salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
10 unwind.o mca.o mca_asm.o topology.o dma-mapping.o 10 unwind.o mca.o mca_asm.o topology.o dma-mapping.o
11 11
@@ -36,7 +36,8 @@ obj-$(CONFIG_PCI_MSI) += msi_ia64.o
36mca_recovery-y += mca_drv.o mca_drv_asm.o 36mca_recovery-y += mca_drv.o mca_drv_asm.o
37obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o 37obj-$(CONFIG_IA64_MC_ERR_INJECT)+= err_inject.o
38 38
39obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o 39obj-$(CONFIG_PARAVIRT) += paravirt.o paravirtentry.o \
40 paravirt_patch.o
40 41
41obj-$(CONFIG_IA64_ESI) += esi.o 42obj-$(CONFIG_IA64_ESI) += esi.o
42ifneq ($(CONFIG_IA64_ESI),) 43ifneq ($(CONFIG_IA64_ESI),)
@@ -45,35 +46,13 @@ endif
45obj-$(CONFIG_DMAR) += pci-dma.o 46obj-$(CONFIG_DMAR) += pci-dma.o
46obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o 47obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
47 48
48# The gate DSO image is built using a special linker script.
49targets += gate.so gate-syms.o
50
51extra-y += gate.so gate-syms.o gate.lds gate.o
52
53# fp_emulate() expects f2-f5,f16-f31 to contain the user-level state. 49# fp_emulate() expects f2-f5,f16-f31 to contain the user-level state.
54CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31 50CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31
55 51
56CPPFLAGS_gate.lds := -P -C -U$(ARCH) 52# The gate DSO image is built using a special linker script.
57 53include $(srctree)/arch/ia64/kernel/Makefile.gate
58quiet_cmd_gate = GATE $@ 54# tell compiled for native
59 cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@ 55CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_NATIVE
60
61GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
62 $(call ld-option, -Wl$(comma)--hash-style=sysv)
63$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
64 $(call if_changed,gate)
65
66$(obj)/built-in.o: $(obj)/gate-syms.o
67$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
68
69GATECFLAGS_gate-syms.o = -r
70$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
71 $(call if_changed,gate)
72
73# gate-data.o contains the gate DSO image as data in section .data.gate.
74# We must build gate.so before we can assemble it.
75# Note: kbuild does not track this dependency due to usage of .incbin
76$(obj)/gate-data.o: $(obj)/gate.so
77 56
78# Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config 57# Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config
79define sed-y 58define sed-y
@@ -109,9 +88,9 @@ include/asm-ia64/nr-irqs.h: arch/$(SRCARCH)/kernel/nr-irqs.s
109clean-files += $(objtree)/include/asm-ia64/nr-irqs.h 88clean-files += $(objtree)/include/asm-ia64/nr-irqs.h
110 89
111# 90#
112# native ivt.S and entry.S 91# native ivt.S, entry.S and fsys.S
113# 92#
114ASM_PARAVIRT_OBJS = ivt.o entry.o 93ASM_PARAVIRT_OBJS = ivt.o entry.o fsys.o
115define paravirtualized_native 94define paravirtualized_native
116AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE 95AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE
117AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK 96AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK
diff --git a/arch/ia64/kernel/Makefile.gate b/arch/ia64/kernel/Makefile.gate
new file mode 100644
index 00000000000..1d87f84069b
--- /dev/null
+++ b/arch/ia64/kernel/Makefile.gate
@@ -0,0 +1,27 @@
1# The gate DSO image is built using a special linker script.
2
3targets += gate.so gate-syms.o
4
5extra-y += gate.so gate-syms.o gate.lds gate.o
6
7CPPFLAGS_gate.lds := -P -C -U$(ARCH)
8
9quiet_cmd_gate = GATE $@
10 cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
11
12GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
13 $(call ld-option, -Wl$(comma)--hash-style=sysv)
14$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
15 $(call if_changed,gate)
16
17$(obj)/built-in.o: $(obj)/gate-syms.o
18$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
19
20GATECFLAGS_gate-syms.o = -r
21$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
22 $(call if_changed,gate)
23
24# gate-data.o contains the gate DSO image as data in section .data.gate.
25# We must build gate.so before we can assemble it.
26# Note: kbuild does not track this dependency due to usage of .incbin
27$(obj)/gate-data.o: $(obj)/gate.so
diff --git a/arch/ia64/kernel/asm-offsets.c b/arch/ia64/kernel/asm-offsets.c
index 742dbb1d5a4..af565016904 100644
--- a/arch/ia64/kernel/asm-offsets.c
+++ b/arch/ia64/kernel/asm-offsets.c
@@ -316,5 +316,7 @@ void foo(void)
316 DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]); 316 DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]);
317 DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat); 317 DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat);
318 DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat); 318 DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat);
319 DEFINE_MAPPED_REG_OFS(XSI_ITC_OFFSET_OFS, itc_offset);
320 DEFINE_MAPPED_REG_OFS(XSI_ITC_LAST_OFS, itc_last);
319#endif /* CONFIG_XEN */ 321#endif /* CONFIG_XEN */
320} 322}
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index efaff15d8cf..7ef80e8161c 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -456,6 +456,7 @@ efi_map_pal_code (void)
456 GRANULEROUNDDOWN((unsigned long) pal_vaddr), 456 GRANULEROUNDDOWN((unsigned long) pal_vaddr),
457 pte_val(pfn_pte(__pa(pal_vaddr) >> PAGE_SHIFT, PAGE_KERNEL)), 457 pte_val(pfn_pte(__pa(pal_vaddr) >> PAGE_SHIFT, PAGE_KERNEL)),
458 IA64_GRANULE_SHIFT); 458 IA64_GRANULE_SHIFT);
459 paravirt_dv_serialize_data();
459 ia64_set_psr(psr); /* restore psr */ 460 ia64_set_psr(psr); /* restore psr */
460} 461}
461 462
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index e5341e2c117..ccfdeee9d89 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -735,7 +735,7 @@ GLOBAL_ENTRY(__paravirt_leave_syscall)
735__paravirt_work_processed_syscall: 735__paravirt_work_processed_syscall:
736#ifdef CONFIG_VIRT_CPU_ACCOUNTING 736#ifdef CONFIG_VIRT_CPU_ACCOUNTING
737 adds r2=PT(LOADRS)+16,r12 737 adds r2=PT(LOADRS)+16,r12
738(pUStk) mov.m r22=ar.itc // fetch time at leave 738 MOV_FROM_ITC(pUStk, p9, r22, r19) // fetch time at leave
739 adds r18=TI_FLAGS+IA64_TASK_SIZE,r13 739 adds r18=TI_FLAGS+IA64_TASK_SIZE,r13
740 ;; 740 ;;
741(p6) ld4 r31=[r18] // load current_thread_info()->flags 741(p6) ld4 r31=[r18] // load current_thread_info()->flags
@@ -984,7 +984,7 @@ GLOBAL_ENTRY(__paravirt_leave_kernel)
984#ifdef CONFIG_VIRT_CPU_ACCOUNTING 984#ifdef CONFIG_VIRT_CPU_ACCOUNTING
985 .pred.rel.mutex pUStk,pKStk 985 .pred.rel.mutex pUStk,pKStk
986 MOV_FROM_PSR(pKStk, r22, r29) // M2 read PSR now that interrupts are disabled 986 MOV_FROM_PSR(pKStk, r22, r29) // M2 read PSR now that interrupts are disabled
987(pUStk) mov.m r22=ar.itc // M fetch time at leave 987 MOV_FROM_ITC(pUStk, p9, r22, r29) // M fetch time at leave
988 nop.i 0 988 nop.i 0
989 ;; 989 ;;
990#else 990#else
diff --git a/arch/ia64/kernel/fsys.S b/arch/ia64/kernel/fsys.S
index c1625c7e177..3567d54f8ce 100644
--- a/arch/ia64/kernel/fsys.S
+++ b/arch/ia64/kernel/fsys.S
@@ -25,6 +25,7 @@
25#include <asm/unistd.h> 25#include <asm/unistd.h>
26 26
27#include "entry.h" 27#include "entry.h"
28#include "paravirt_inst.h"
28 29
29/* 30/*
30 * See Documentation/ia64/fsys.txt for details on fsyscalls. 31 * See Documentation/ia64/fsys.txt for details on fsyscalls.
@@ -279,7 +280,7 @@ ENTRY(fsys_gettimeofday)
279(p9) cmp.eq p13,p0 = 0,r30 // if mmio_ptr, clear p13 jitter control 280(p9) cmp.eq p13,p0 = 0,r30 // if mmio_ptr, clear p13 jitter control
280 ;; 281 ;;
281 .pred.rel.mutex p8,p9 282 .pred.rel.mutex p8,p9
282(p8) mov r2 = ar.itc // CPU_TIMER. 36 clocks latency!!! 283 MOV_FROM_ITC(p8, p6, r2, r10) // CPU_TIMER. 36 clocks latency!!!
283(p9) ld8 r2 = [r30] // MMIO_TIMER. Could also have latency issues.. 284(p9) ld8 r2 = [r30] // MMIO_TIMER. Could also have latency issues..
284(p13) ld8 r25 = [r19] // get itc_lastcycle value 285(p13) ld8 r25 = [r19] // get itc_lastcycle value
285 ld8 r9 = [r22],IA64_TIMESPEC_TV_NSEC_OFFSET // tv_sec 286 ld8 r9 = [r22],IA64_TIMESPEC_TV_NSEC_OFFSET // tv_sec
@@ -418,7 +419,7 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
418 mov r17=(1 << (SIGKILL - 1)) | (1 << (SIGSTOP - 1)) 419 mov r17=(1 << (SIGKILL - 1)) | (1 << (SIGSTOP - 1))
419 ;; 420 ;;
420 421
421 rsm psr.i // mask interrupt delivery 422 RSM_PSR_I(p0, r18, r19) // mask interrupt delivery
422 mov ar.ccv=0 423 mov ar.ccv=0
423 andcm r14=r14,r17 // filter out SIGKILL & SIGSTOP 424 andcm r14=r14,r17 // filter out SIGKILL & SIGSTOP
424 425
@@ -491,7 +492,7 @@ EX(.fail_efault, ld8 r14=[r33]) // r14 <- *set
491#ifdef CONFIG_SMP 492#ifdef CONFIG_SMP
492 st4.rel [r31]=r0 // release the lock 493 st4.rel [r31]=r0 // release the lock
493#endif 494#endif
494 ssm psr.i 495 SSM_PSR_I(p0, p9, r31)
495 ;; 496 ;;
496 497
497 srlz.d // ensure psr.i is set again 498 srlz.d // ensure psr.i is set again
@@ -513,7 +514,7 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
513#ifdef CONFIG_SMP 514#ifdef CONFIG_SMP
514 st4.rel [r31]=r0 // release the lock 515 st4.rel [r31]=r0 // release the lock
515#endif 516#endif
516 ssm psr.i 517 SSM_PSR_I(p0, p9, r17)
517 ;; 518 ;;
518 srlz.d 519 srlz.d
519 br.sptk.many fsys_fallback_syscall // with signal pending, do the heavy-weight syscall 520 br.sptk.many fsys_fallback_syscall // with signal pending, do the heavy-weight syscall
@@ -521,7 +522,7 @@ EX(.fail_efault, (p15) st8 [r34]=r3)
521#ifdef CONFIG_SMP 522#ifdef CONFIG_SMP
522.lock_contention: 523.lock_contention:
523 /* Rather than spinning here, fall back on doing a heavy-weight syscall. */ 524 /* Rather than spinning here, fall back on doing a heavy-weight syscall. */
524 ssm psr.i 525 SSM_PSR_I(p0, p9, r17)
525 ;; 526 ;;
526 srlz.d 527 srlz.d
527 br.sptk.many fsys_fallback_syscall 528 br.sptk.many fsys_fallback_syscall
@@ -592,17 +593,17 @@ ENTRY(fsys_fallback_syscall)
592 adds r17=-1024,r15 593 adds r17=-1024,r15
593 movl r14=sys_call_table 594 movl r14=sys_call_table
594 ;; 595 ;;
595 rsm psr.i 596 RSM_PSR_I(p0, r26, r27)
596 shladd r18=r17,3,r14 597 shladd r18=r17,3,r14
597 ;; 598 ;;
598 ld8 r18=[r18] // load normal (heavy-weight) syscall entry-point 599 ld8 r18=[r18] // load normal (heavy-weight) syscall entry-point
599 mov r29=psr // read psr (12 cyc load latency) 600 MOV_FROM_PSR(p0, r29, r26) // read psr (12 cyc load latency)
600 mov r27=ar.rsc 601 mov r27=ar.rsc
601 mov r21=ar.fpsr 602 mov r21=ar.fpsr
602 mov r26=ar.pfs 603 mov r26=ar.pfs
603END(fsys_fallback_syscall) 604END(fsys_fallback_syscall)
604 /* FALL THROUGH */ 605 /* FALL THROUGH */
605GLOBAL_ENTRY(fsys_bubble_down) 606GLOBAL_ENTRY(paravirt_fsys_bubble_down)
606 .prologue 607 .prologue
607 .altrp b6 608 .altrp b6
608 .body 609 .body
@@ -640,7 +641,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
640 * 641 *
641 * PSR.BE : already is turned off in __kernel_syscall_via_epc() 642 * PSR.BE : already is turned off in __kernel_syscall_via_epc()
642 * PSR.AC : don't care (kernel normally turns PSR.AC on) 643 * PSR.AC : don't care (kernel normally turns PSR.AC on)
643 * PSR.I : already turned off by the time fsys_bubble_down gets 644 * PSR.I : already turned off by the time paravirt_fsys_bubble_down gets
644 * invoked 645 * invoked
645 * PSR.DFL: always 0 (kernel never turns it on) 646 * PSR.DFL: always 0 (kernel never turns it on)
646 * PSR.DFH: don't care --- kernel never touches f32-f127 on its own 647 * PSR.DFH: don't care --- kernel never touches f32-f127 on its own
@@ -650,7 +651,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
650 * PSR.DB : don't care --- kernel never enables kernel-level 651 * PSR.DB : don't care --- kernel never enables kernel-level
651 * breakpoints 652 * breakpoints
652 * PSR.TB : must be 0 already; if it wasn't zero on entry to 653 * PSR.TB : must be 0 already; if it wasn't zero on entry to
653 * __kernel_syscall_via_epc, the branch to fsys_bubble_down 654 * __kernel_syscall_via_epc, the branch to paravirt_fsys_bubble_down
654 * will trigger a taken branch; the taken-trap-handler then 655 * will trigger a taken branch; the taken-trap-handler then
655 * converts the syscall into a break-based system-call. 656 * converts the syscall into a break-based system-call.
656 */ 657 */
@@ -683,7 +684,7 @@ GLOBAL_ENTRY(fsys_bubble_down)
683 ;; 684 ;;
684 mov ar.rsc=0 // M2 set enforced lazy mode, pl 0, LE, loadrs=0 685 mov ar.rsc=0 // M2 set enforced lazy mode, pl 0, LE, loadrs=0
685#ifdef CONFIG_VIRT_CPU_ACCOUNTING 686#ifdef CONFIG_VIRT_CPU_ACCOUNTING
686 mov.m r30=ar.itc // M get cycle for accounting 687 MOV_FROM_ITC(p0, p6, r30, r23) // M get cycle for accounting
687#else 688#else
688 nop.m 0 689 nop.m 0
689#endif 690#endif
@@ -734,21 +735,21 @@ GLOBAL_ENTRY(fsys_bubble_down)
734 mov rp=r14 // I0 set the real return addr 735 mov rp=r14 // I0 set the real return addr
735 and r3=_TIF_SYSCALL_TRACEAUDIT,r3 // A 736 and r3=_TIF_SYSCALL_TRACEAUDIT,r3 // A
736 ;; 737 ;;
737 ssm psr.i // M2 we're on kernel stacks now, reenable irqs 738 SSM_PSR_I(p0, p6, r22) // M2 we're on kernel stacks now, reenable irqs
738 cmp.eq p8,p0=r3,r0 // A 739 cmp.eq p8,p0=r3,r0 // A
739(p10) br.cond.spnt.many ia64_ret_from_syscall // B return if bad call-frame or r15 is a NaT 740(p10) br.cond.spnt.many ia64_ret_from_syscall // B return if bad call-frame or r15 is a NaT
740 741
741 nop.m 0 742 nop.m 0
742(p8) br.call.sptk.many b6=b6 // B (ignore return address) 743(p8) br.call.sptk.many b6=b6 // B (ignore return address)
743 br.cond.spnt ia64_trace_syscall // B 744 br.cond.spnt ia64_trace_syscall // B
744END(fsys_bubble_down) 745END(paravirt_fsys_bubble_down)
745 746
746 .rodata 747 .rodata
747 .align 8 748 .align 8
748 .globl fsyscall_table 749 .globl paravirt_fsyscall_table
749 750
750 data8 fsys_bubble_down 751 data8 paravirt_fsys_bubble_down
751fsyscall_table: 752paravirt_fsyscall_table:
752 data8 fsys_ni_syscall 753 data8 fsys_ni_syscall
753 data8 0 // exit // 1025 754 data8 0 // exit // 1025
754 data8 0 // read 755 data8 0 // read
@@ -1033,4 +1034,4 @@ fsyscall_table:
1033 1034
1034 // fill in zeros for the remaining entries 1035 // fill in zeros for the remaining entries
1035 .zero: 1036 .zero:
1036 .space fsyscall_table + 8*NR_syscalls - .zero, 0 1037 .space paravirt_fsyscall_table + 8*NR_syscalls - .zero, 0
diff --git a/arch/ia64/kernel/gate.S b/arch/ia64/kernel/gate.S
index 74b1ccce4e8..cf5e0a105e1 100644
--- a/arch/ia64/kernel/gate.S
+++ b/arch/ia64/kernel/gate.S
@@ -13,6 +13,7 @@
13#include <asm/sigcontext.h> 13#include <asm/sigcontext.h>
14#include <asm/system.h> 14#include <asm/system.h>
15#include <asm/unistd.h> 15#include <asm/unistd.h>
16#include "paravirt_inst.h"
16 17
17/* 18/*
18 * We can't easily refer to symbols inside the kernel. To avoid full runtime relocation, 19 * We can't easily refer to symbols inside the kernel. To avoid full runtime relocation,
@@ -48,87 +49,6 @@ GLOBAL_ENTRY(__kernel_syscall_via_break)
48} 49}
49END(__kernel_syscall_via_break) 50END(__kernel_syscall_via_break)
50 51
51/*
52 * On entry:
53 * r11 = saved ar.pfs
54 * r15 = system call #
55 * b0 = saved return address
56 * b6 = return address
57 * On exit:
58 * r11 = saved ar.pfs
59 * r15 = system call #
60 * b0 = saved return address
61 * all other "scratch" registers: undefined
62 * all "preserved" registers: same as on entry
63 */
64
65GLOBAL_ENTRY(__kernel_syscall_via_epc)
66 .prologue
67 .altrp b6
68 .body
69{
70 /*
71 * Note: the kernel cannot assume that the first two instructions in this
72 * bundle get executed. The remaining code must be safe even if
73 * they do not get executed.
74 */
75 adds r17=-1024,r15 // A
76 mov r10=0 // A default to successful syscall execution
77 epc // B causes split-issue
78}
79 ;;
80 rsm psr.be | psr.i // M2 (5 cyc to srlz.d)
81 LOAD_FSYSCALL_TABLE(r14) // X
82 ;;
83 mov r16=IA64_KR(CURRENT) // M2 (12 cyc)
84 shladd r18=r17,3,r14 // A
85 mov r19=NR_syscalls-1 // A
86 ;;
87 lfetch [r18] // M0|1
88 mov r29=psr // M2 (12 cyc)
89 // If r17 is a NaT, p6 will be zero
90 cmp.geu p6,p7=r19,r17 // A (sysnr > 0 && sysnr < 1024+NR_syscalls)?
91 ;;
92 mov r21=ar.fpsr // M2 (12 cyc)
93 tnat.nz p10,p9=r15 // I0
94 mov.i r26=ar.pfs // I0 (would stall anyhow due to srlz.d...)
95 ;;
96 srlz.d // M0 (forces split-issue) ensure PSR.BE==0
97(p6) ld8 r18=[r18] // M0|1
98 nop.i 0
99 ;;
100 nop.m 0
101(p6) tbit.z.unc p8,p0=r18,0 // I0 (dual-issues with "mov b7=r18"!)
102 nop.i 0
103 ;;
104(p8) ssm psr.i
105(p6) mov b7=r18 // I0
106(p8) br.dptk.many b7 // B
107
108 mov r27=ar.rsc // M2 (12 cyc)
109/*
110 * brl.cond doesn't work as intended because the linker would convert this branch
111 * into a branch to a PLT. Perhaps there will be a way to avoid this with some
112 * future version of the linker. In the meantime, we just use an indirect branch
113 * instead.
114 */
115#ifdef CONFIG_ITANIUM
116(p6) add r14=-8,r14 // r14 <- addr of fsys_bubble_down entry
117 ;;
118(p6) ld8 r14=[r14] // r14 <- fsys_bubble_down
119 ;;
120(p6) mov b7=r14
121(p6) br.sptk.many b7
122#else
123 BRL_COND_FSYS_BUBBLE_DOWN(p6)
124#endif
125 ssm psr.i
126 mov r10=-1
127(p10) mov r8=EINVAL
128(p9) mov r8=ENOSYS
129 FSYS_RETURN
130END(__kernel_syscall_via_epc)
131
132# define ARG0_OFF (16 + IA64_SIGFRAME_ARG0_OFFSET) 52# define ARG0_OFF (16 + IA64_SIGFRAME_ARG0_OFFSET)
133# define ARG1_OFF (16 + IA64_SIGFRAME_ARG1_OFFSET) 53# define ARG1_OFF (16 + IA64_SIGFRAME_ARG1_OFFSET)
134# define ARG2_OFF (16 + IA64_SIGFRAME_ARG2_OFFSET) 54# define ARG2_OFF (16 + IA64_SIGFRAME_ARG2_OFFSET)
@@ -374,3 +294,92 @@ restore_rbs:
374 // invala not necessary as that will happen when returning to user-mode 294 // invala not necessary as that will happen when returning to user-mode
375 br.cond.sptk back_from_restore_rbs 295 br.cond.sptk back_from_restore_rbs
376END(__kernel_sigtramp) 296END(__kernel_sigtramp)
297
298/*
299 * On entry:
300 * r11 = saved ar.pfs
301 * r15 = system call #
302 * b0 = saved return address
303 * b6 = return address
304 * On exit:
305 * r11 = saved ar.pfs
306 * r15 = system call #
307 * b0 = saved return address
308 * all other "scratch" registers: undefined
309 * all "preserved" registers: same as on entry
310 */
311
312GLOBAL_ENTRY(__kernel_syscall_via_epc)
313 .prologue
314 .altrp b6
315 .body
316{
317 /*
318 * Note: the kernel cannot assume that the first two instructions in this
319 * bundle get executed. The remaining code must be safe even if
320 * they do not get executed.
321 */
322 adds r17=-1024,r15 // A
323 mov r10=0 // A default to successful syscall execution
324 epc // B causes split-issue
325}
326 ;;
327 RSM_PSR_BE_I(r20, r22) // M2 (5 cyc to srlz.d)
328 LOAD_FSYSCALL_TABLE(r14) // X
329 ;;
330 mov r16=IA64_KR(CURRENT) // M2 (12 cyc)
331 shladd r18=r17,3,r14 // A
332 mov r19=NR_syscalls-1 // A
333 ;;
334 lfetch [r18] // M0|1
335 MOV_FROM_PSR(p0, r29, r8) // M2 (12 cyc)
336 // If r17 is a NaT, p6 will be zero
337 cmp.geu p6,p7=r19,r17 // A (sysnr > 0 && sysnr < 1024+NR_syscalls)?
338 ;;
339 mov r21=ar.fpsr // M2 (12 cyc)
340 tnat.nz p10,p9=r15 // I0
341 mov.i r26=ar.pfs // I0 (would stall anyhow due to srlz.d...)
342 ;;
343 srlz.d // M0 (forces split-issue) ensure PSR.BE==0
344(p6) ld8 r18=[r18] // M0|1
345 nop.i 0
346 ;;
347 nop.m 0
348(p6) tbit.z.unc p8,p0=r18,0 // I0 (dual-issues with "mov b7=r18"!)
349 nop.i 0
350 ;;
351 SSM_PSR_I(p8, p14, r25)
352(p6) mov b7=r18 // I0
353(p8) br.dptk.many b7 // B
354
355 mov r27=ar.rsc // M2 (12 cyc)
356/*
357 * brl.cond doesn't work as intended because the linker would convert this branch
358 * into a branch to a PLT. Perhaps there will be a way to avoid this with some
359 * future version of the linker. In the meantime, we just use an indirect branch
360 * instead.
361 */
362#ifdef CONFIG_ITANIUM
363(p6) add r14=-8,r14 // r14 <- addr of fsys_bubble_down entry
364 ;;
365(p6) ld8 r14=[r14] // r14 <- fsys_bubble_down
366 ;;
367(p6) mov b7=r14
368(p6) br.sptk.many b7
369#else
370 BRL_COND_FSYS_BUBBLE_DOWN(p6)
371#endif
372 SSM_PSR_I(p0, p14, r10)
373 mov r10=-1
374(p10) mov r8=EINVAL
375(p9) mov r8=ENOSYS
376 FSYS_RETURN
377
378#ifdef CONFIG_PARAVIRT
379 /*
380 * padd to make the size of this symbol constant
381 * independent of paravirtualization.
382 */
383 .align PAGE_SIZE / 8
384#endif
385END(__kernel_syscall_via_epc)
diff --git a/arch/ia64/kernel/gate.lds.S b/arch/ia64/kernel/gate.lds.S
index 3cb1abc00e2..88c64ed47c3 100644
--- a/arch/ia64/kernel/gate.lds.S
+++ b/arch/ia64/kernel/gate.lds.S
@@ -7,6 +7,7 @@
7 7
8 8
9#include <asm/system.h> 9#include <asm/system.h>
10#include "paravirt_patchlist.h"
10 11
11SECTIONS 12SECTIONS
12{ 13{
@@ -33,21 +34,21 @@ SECTIONS
33 . = GATE_ADDR + 0x600; 34 . = GATE_ADDR + 0x600;
34 35
35 .data.patch : { 36 .data.patch : {
36 __start_gate_mckinley_e9_patchlist = .; 37 __paravirt_start_gate_mckinley_e9_patchlist = .;
37 *(.data.patch.mckinley_e9) 38 *(.data.patch.mckinley_e9)
38 __end_gate_mckinley_e9_patchlist = .; 39 __paravirt_end_gate_mckinley_e9_patchlist = .;
39 40
40 __start_gate_vtop_patchlist = .; 41 __paravirt_start_gate_vtop_patchlist = .;
41 *(.data.patch.vtop) 42 *(.data.patch.vtop)
42 __end_gate_vtop_patchlist = .; 43 __paravirt_end_gate_vtop_patchlist = .;
43 44
44 __start_gate_fsyscall_patchlist = .; 45 __paravirt_start_gate_fsyscall_patchlist = .;
45 *(.data.patch.fsyscall_table) 46 *(.data.patch.fsyscall_table)
46 __end_gate_fsyscall_patchlist = .; 47 __paravirt_end_gate_fsyscall_patchlist = .;
47 48
48 __start_gate_brl_fsys_bubble_down_patchlist = .; 49 __paravirt_start_gate_brl_fsys_bubble_down_patchlist = .;
49 *(.data.patch.brl_fsys_bubble_down) 50 *(.data.patch.brl_fsys_bubble_down)
50 __end_gate_brl_fsys_bubble_down_patchlist = .; 51 __paravirt_end_gate_brl_fsys_bubble_down_patchlist = .;
51 } :readable 52 } :readable
52 53
53 .IA_64.unwind_info : { *(.IA_64.unwind_info*) } 54 .IA_64.unwind_info : { *(.IA_64.unwind_info*) }
diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 59301c47280..23f846de62d 100644
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -1050,7 +1050,7 @@ END(ia64_delay_loop)
1050 * except that the multiplication and the shift are done with 128-bit 1050 * except that the multiplication and the shift are done with 128-bit
1051 * intermediate precision so that we can produce a full 64-bit result. 1051 * intermediate precision so that we can produce a full 64-bit result.
1052 */ 1052 */
1053GLOBAL_ENTRY(sched_clock) 1053GLOBAL_ENTRY(ia64_native_sched_clock)
1054 addl r8=THIS_CPU(cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0 1054 addl r8=THIS_CPU(cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
1055 mov.m r9=ar.itc // fetch cycle-counter (35 cyc) 1055 mov.m r9=ar.itc // fetch cycle-counter (35 cyc)
1056 ;; 1056 ;;
@@ -1066,7 +1066,13 @@ GLOBAL_ENTRY(sched_clock)
1066 ;; 1066 ;;
1067 shrp r8=r9,r8,IA64_NSEC_PER_CYC_SHIFT 1067 shrp r8=r9,r8,IA64_NSEC_PER_CYC_SHIFT
1068 br.ret.sptk.many rp 1068 br.ret.sptk.many rp
1069END(sched_clock) 1069END(ia64_native_sched_clock)
1070#ifndef CONFIG_PARAVIRT
1071 //unsigned long long
1072 //sched_clock(void) __attribute__((alias("ia64_native_sched_clock")));
1073 .global sched_clock
1074sched_clock = ia64_native_sched_clock
1075#endif
1070 1076
1071#ifdef CONFIG_VIRT_CPU_ACCOUNTING 1077#ifdef CONFIG_VIRT_CPU_ACCOUNTING
1072GLOBAL_ENTRY(cycle_to_cputime) 1078GLOBAL_ENTRY(cycle_to_cputime)
diff --git a/arch/ia64/kernel/ivt.S b/arch/ia64/kernel/ivt.S
index f675d8e3385..ec9a5fdfa1b 100644
--- a/arch/ia64/kernel/ivt.S
+++ b/arch/ia64/kernel/ivt.S
@@ -804,7 +804,7 @@ ENTRY(break_fault)
804/////////////////////////////////////////////////////////////////////// 804///////////////////////////////////////////////////////////////////////
805 st1 [r16]=r0 // M2|3 clear current->thread.on_ustack flag 805 st1 [r16]=r0 // M2|3 clear current->thread.on_ustack flag
806#ifdef CONFIG_VIRT_CPU_ACCOUNTING 806#ifdef CONFIG_VIRT_CPU_ACCOUNTING
807 mov.m r30=ar.itc // M get cycle for accounting 807 MOV_FROM_ITC(p0, p14, r30, r18) // M get cycle for accounting
808#else 808#else
809 mov b6=r30 // I0 setup syscall handler branch reg early 809 mov b6=r30 // I0 setup syscall handler branch reg early
810#endif 810#endif
diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
index aaa7d901521..34fe4259a14 100644
--- a/arch/ia64/kernel/module.c
+++ b/arch/ia64/kernel/module.c
@@ -446,6 +446,14 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
446 mod->arch.opd = s; 446 mod->arch.opd = s;
447 else if (strcmp(".IA_64.unwind", secstrings + s->sh_name) == 0) 447 else if (strcmp(".IA_64.unwind", secstrings + s->sh_name) == 0)
448 mod->arch.unwind = s; 448 mod->arch.unwind = s;
449#ifdef CONFIG_PARAVIRT
450 else if (strcmp(".paravirt_bundles",
451 secstrings + s->sh_name) == 0)
452 mod->arch.paravirt_bundles = s;
453 else if (strcmp(".paravirt_insts",
454 secstrings + s->sh_name) == 0)
455 mod->arch.paravirt_insts = s;
456#endif
449 457
450 if (!mod->arch.core_plt || !mod->arch.init_plt || !mod->arch.got || !mod->arch.opd) { 458 if (!mod->arch.core_plt || !mod->arch.init_plt || !mod->arch.got || !mod->arch.opd) {
451 printk(KERN_ERR "%s: sections missing\n", mod->name); 459 printk(KERN_ERR "%s: sections missing\n", mod->name);
@@ -921,6 +929,30 @@ module_finalize (const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mo
921 DEBUGP("%s: init: entry=%p\n", __func__, mod->init); 929 DEBUGP("%s: init: entry=%p\n", __func__, mod->init);
922 if (mod->arch.unwind) 930 if (mod->arch.unwind)
923 register_unwind_table(mod); 931 register_unwind_table(mod);
932#ifdef CONFIG_PARAVIRT
933 if (mod->arch.paravirt_bundles) {
934 struct paravirt_patch_site_bundle *start =
935 (struct paravirt_patch_site_bundle *)
936 mod->arch.paravirt_bundles->sh_addr;
937 struct paravirt_patch_site_bundle *end =
938 (struct paravirt_patch_site_bundle *)
939 (mod->arch.paravirt_bundles->sh_addr +
940 mod->arch.paravirt_bundles->sh_size);
941
942 paravirt_patch_apply_bundle(start, end);
943 }
944 if (mod->arch.paravirt_insts) {
945 struct paravirt_patch_site_inst *start =
946 (struct paravirt_patch_site_inst *)
947 mod->arch.paravirt_insts->sh_addr;
948 struct paravirt_patch_site_inst *end =
949 (struct paravirt_patch_site_inst *)
950 (mod->arch.paravirt_insts->sh_addr +
951 mod->arch.paravirt_insts->sh_size);
952
953 paravirt_patch_apply_inst(start, end);
954 }
955#endif
924 return 0; 956 return 0;
925} 957}
926 958
diff --git a/arch/ia64/kernel/paravirt.c b/arch/ia64/kernel/paravirt.c
index 9f14c16f636..a21d7bb9c69 100644
--- a/arch/ia64/kernel/paravirt.c
+++ b/arch/ia64/kernel/paravirt.c
@@ -46,13 +46,23 @@ struct pv_info pv_info = {
46 * initialization hooks. 46 * initialization hooks.
47 */ 47 */
48 48
49struct pv_init_ops pv_init_ops; 49static void __init
50ia64_native_patch_branch(unsigned long tag, unsigned long type);
51
52struct pv_init_ops pv_init_ops =
53{
54#ifdef ASM_SUPPORTED
55 .patch_bundle = ia64_native_patch_bundle,
56#endif
57 .patch_branch = ia64_native_patch_branch,
58};
50 59
51/*************************************************************************** 60/***************************************************************************
52 * pv_cpu_ops 61 * pv_cpu_ops
53 * intrinsics hooks. 62 * intrinsics hooks.
54 */ 63 */
55 64
65#ifndef ASM_SUPPORTED
56/* ia64_native_xxx are macros so that we have to make them real functions */ 66/* ia64_native_xxx are macros so that we have to make them real functions */
57 67
58#define DEFINE_VOID_FUNC1(name) \ 68#define DEFINE_VOID_FUNC1(name) \
@@ -60,7 +70,14 @@ struct pv_init_ops pv_init_ops;
60 ia64_native_ ## name ## _func(unsigned long arg) \ 70 ia64_native_ ## name ## _func(unsigned long arg) \
61 { \ 71 { \
62 ia64_native_ ## name(arg); \ 72 ia64_native_ ## name(arg); \
63 } \ 73 }
74
75#define DEFINE_VOID_FUNC1_VOID(name) \
76 static void \
77 ia64_native_ ## name ## _func(void *arg) \
78 { \
79 ia64_native_ ## name(arg); \
80 }
64 81
65#define DEFINE_VOID_FUNC2(name) \ 82#define DEFINE_VOID_FUNC2(name) \
66 static void \ 83 static void \
@@ -68,7 +85,7 @@ struct pv_init_ops pv_init_ops;
68 unsigned long arg1) \ 85 unsigned long arg1) \
69 { \ 86 { \
70 ia64_native_ ## name(arg0, arg1); \ 87 ia64_native_ ## name(arg0, arg1); \
71 } \ 88 }
72 89
73#define DEFINE_FUNC0(name) \ 90#define DEFINE_FUNC0(name) \
74 static unsigned long \ 91 static unsigned long \
@@ -84,7 +101,7 @@ struct pv_init_ops pv_init_ops;
84 return ia64_native_ ## name(arg); \ 101 return ia64_native_ ## name(arg); \
85 } \ 102 } \
86 103
87DEFINE_VOID_FUNC1(fc); 104DEFINE_VOID_FUNC1_VOID(fc);
88DEFINE_VOID_FUNC1(intrin_local_irq_restore); 105DEFINE_VOID_FUNC1(intrin_local_irq_restore);
89 106
90DEFINE_VOID_FUNC2(ptcga); 107DEFINE_VOID_FUNC2(ptcga);
@@ -274,6 +291,266 @@ ia64_native_setreg_func(int regnum, unsigned long val)
274 break; 291 break;
275 } 292 }
276} 293}
294#else
295
296#define __DEFINE_FUNC(name, code) \
297 extern const char ia64_native_ ## name ## _direct_start[]; \
298 extern const char ia64_native_ ## name ## _direct_end[]; \
299 asm (".align 32\n" \
300 ".proc ia64_native_" #name "_func\n" \
301 "ia64_native_" #name "_func:\n" \
302 "ia64_native_" #name "_direct_start:\n" \
303 code \
304 "ia64_native_" #name "_direct_end:\n" \
305 "br.cond.sptk.many b6\n" \
306 ".endp ia64_native_" #name "_func\n")
307
308#define DEFINE_VOID_FUNC0(name, code) \
309 extern void \
310 ia64_native_ ## name ## _func(void); \
311 __DEFINE_FUNC(name, code)
312
313#define DEFINE_VOID_FUNC1(name, code) \
314 extern void \
315 ia64_native_ ## name ## _func(unsigned long arg); \
316 __DEFINE_FUNC(name, code)
317
318#define DEFINE_VOID_FUNC1_VOID(name, code) \
319 extern void \
320 ia64_native_ ## name ## _func(void *arg); \
321 __DEFINE_FUNC(name, code)
322
323#define DEFINE_VOID_FUNC2(name, code) \
324 extern void \
325 ia64_native_ ## name ## _func(unsigned long arg0, \
326 unsigned long arg1); \
327 __DEFINE_FUNC(name, code)
328
329#define DEFINE_FUNC0(name, code) \
330 extern unsigned long \
331 ia64_native_ ## name ## _func(void); \
332 __DEFINE_FUNC(name, code)
333
334#define DEFINE_FUNC1(name, type, code) \
335 extern unsigned long \
336 ia64_native_ ## name ## _func(type arg); \
337 __DEFINE_FUNC(name, code)
338
339DEFINE_VOID_FUNC1_VOID(fc,
340 "fc r8\n");
341DEFINE_VOID_FUNC1(intrin_local_irq_restore,
342 ";;\n"
343 " cmp.ne p6, p7 = r8, r0\n"
344 ";;\n"
345 "(p6) ssm psr.i\n"
346 "(p7) rsm psr.i\n"
347 ";;\n"
348 "(p6) srlz.d\n");
349
350DEFINE_VOID_FUNC2(ptcga,
351 "ptc.ga r8, r9\n");
352DEFINE_VOID_FUNC2(set_rr,
353 "mov rr[r8] = r9\n");
354
355/* ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I */
356DEFINE_FUNC0(get_psr_i,
357 "mov r2 = " __stringify(1 << IA64_PSR_I_BIT) "\n"
358 "mov r8 = psr\n"
359 ";;\n"
360 "and r8 = r2, r8\n");
361
362DEFINE_FUNC1(thash, unsigned long,
363 "thash r8 = r8\n");
364DEFINE_FUNC1(get_cpuid, int,
365 "mov r8 = cpuid[r8]\n");
366DEFINE_FUNC1(get_pmd, int,
367 "mov r8 = pmd[r8]\n");
368DEFINE_FUNC1(get_rr, unsigned long,
369 "mov r8 = rr[r8]\n");
370
371DEFINE_VOID_FUNC0(ssm_i,
372 "ssm psr.i\n");
373DEFINE_VOID_FUNC0(rsm_i,
374 "rsm psr.i\n");
375
376extern void
377ia64_native_set_rr0_to_rr4_func(unsigned long val0, unsigned long val1,
378 unsigned long val2, unsigned long val3,
379 unsigned long val4);
380__DEFINE_FUNC(set_rr0_to_rr4,
381 "mov rr[r0] = r8\n"
382 "movl r2 = 0x2000000000000000\n"
383 ";;\n"
384 "mov rr[r2] = r9\n"
385 "shl r3 = r2, 1\n" /* movl r3 = 0x4000000000000000 */
386 ";;\n"
387 "add r2 = r2, r3\n" /* movl r2 = 0x6000000000000000 */
388 "mov rr[r3] = r10\n"
389 ";;\n"
390 "mov rr[r2] = r11\n"
391 "shl r3 = r3, 1\n" /* movl r3 = 0x8000000000000000 */
392 ";;\n"
393 "mov rr[r3] = r14\n");
394
395extern unsigned long ia64_native_getreg_func(int regnum);
396asm(".global ia64_native_getreg_func\n");
397#define __DEFINE_GET_REG(id, reg) \
398 "mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
399 ";;\n" \
400 "cmp.eq p6, p0 = r2, r8\n" \
401 ";;\n" \
402 "(p6) mov r8 = " #reg "\n" \
403 "(p6) br.cond.sptk.many b6\n" \
404 ";;\n"
405#define __DEFINE_GET_AR(id, reg) __DEFINE_GET_REG(AR_ ## id, ar.reg)
406#define __DEFINE_GET_CR(id, reg) __DEFINE_GET_REG(CR_ ## id, cr.reg)
407
408__DEFINE_FUNC(getreg,
409 __DEFINE_GET_REG(GP, gp)
410 /*__DEFINE_GET_REG(IP, ip)*/ /* returned ip value shouldn't be constant */
411 __DEFINE_GET_REG(PSR, psr)
412 __DEFINE_GET_REG(TP, tp)
413 __DEFINE_GET_REG(SP, sp)
414
415 __DEFINE_GET_REG(AR_KR0, ar0)
416 __DEFINE_GET_REG(AR_KR1, ar1)
417 __DEFINE_GET_REG(AR_KR2, ar2)
418 __DEFINE_GET_REG(AR_KR3, ar3)
419 __DEFINE_GET_REG(AR_KR4, ar4)
420 __DEFINE_GET_REG(AR_KR5, ar5)
421 __DEFINE_GET_REG(AR_KR6, ar6)
422 __DEFINE_GET_REG(AR_KR7, ar7)
423 __DEFINE_GET_AR(RSC, rsc)
424 __DEFINE_GET_AR(BSP, bsp)
425 __DEFINE_GET_AR(BSPSTORE, bspstore)
426 __DEFINE_GET_AR(RNAT, rnat)
427 __DEFINE_GET_AR(FCR, fcr)
428 __DEFINE_GET_AR(EFLAG, eflag)
429 __DEFINE_GET_AR(CSD, csd)
430 __DEFINE_GET_AR(SSD, ssd)
431 __DEFINE_GET_REG(AR_CFLAG, ar27)
432 __DEFINE_GET_AR(FSR, fsr)
433 __DEFINE_GET_AR(FIR, fir)
434 __DEFINE_GET_AR(FDR, fdr)
435 __DEFINE_GET_AR(CCV, ccv)
436 __DEFINE_GET_AR(UNAT, unat)
437 __DEFINE_GET_AR(FPSR, fpsr)
438 __DEFINE_GET_AR(ITC, itc)
439 __DEFINE_GET_AR(PFS, pfs)
440 __DEFINE_GET_AR(LC, lc)
441 __DEFINE_GET_AR(EC, ec)
442
443 __DEFINE_GET_CR(DCR, dcr)
444 __DEFINE_GET_CR(ITM, itm)
445 __DEFINE_GET_CR(IVA, iva)
446 __DEFINE_GET_CR(PTA, pta)
447 __DEFINE_GET_CR(IPSR, ipsr)
448 __DEFINE_GET_CR(ISR, isr)
449 __DEFINE_GET_CR(IIP, iip)
450 __DEFINE_GET_CR(IFA, ifa)
451 __DEFINE_GET_CR(ITIR, itir)
452 __DEFINE_GET_CR(IIPA, iipa)
453 __DEFINE_GET_CR(IFS, ifs)
454 __DEFINE_GET_CR(IIM, iim)
455 __DEFINE_GET_CR(IHA, iha)
456 __DEFINE_GET_CR(LID, lid)
457 __DEFINE_GET_CR(IVR, ivr)
458 __DEFINE_GET_CR(TPR, tpr)
459 __DEFINE_GET_CR(EOI, eoi)
460 __DEFINE_GET_CR(IRR0, irr0)
461 __DEFINE_GET_CR(IRR1, irr1)
462 __DEFINE_GET_CR(IRR2, irr2)
463 __DEFINE_GET_CR(IRR3, irr3)
464 __DEFINE_GET_CR(ITV, itv)
465 __DEFINE_GET_CR(PMV, pmv)
466 __DEFINE_GET_CR(CMCV, cmcv)
467 __DEFINE_GET_CR(LRR0, lrr0)
468 __DEFINE_GET_CR(LRR1, lrr1)
469
470 "mov r8 = -1\n" /* unsupported case */
471 );
472
473extern void ia64_native_setreg_func(int regnum, unsigned long val);
474asm(".global ia64_native_setreg_func\n");
475#define __DEFINE_SET_REG(id, reg) \
476 "mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
477 ";;\n" \
478 "cmp.eq p6, p0 = r2, r9\n" \
479 ";;\n" \
480 "(p6) mov " #reg " = r8\n" \
481 "(p6) br.cond.sptk.many b6\n" \
482 ";;\n"
483#define __DEFINE_SET_AR(id, reg) __DEFINE_SET_REG(AR_ ## id, ar.reg)
484#define __DEFINE_SET_CR(id, reg) __DEFINE_SET_REG(CR_ ## id, cr.reg)
485__DEFINE_FUNC(setreg,
486 "mov r2 = " __stringify(_IA64_REG_PSR_L) "\n"
487 ";;\n"
488 "cmp.eq p6, p0 = r2, r9\n"
489 ";;\n"
490 "(p6) mov psr.l = r8\n"
491#ifdef HAVE_SERIALIZE_DIRECTIVE
492 ".serialize.data\n"
493#endif
494 "(p6) br.cond.sptk.many b6\n"
495 __DEFINE_SET_REG(GP, gp)
496 __DEFINE_SET_REG(SP, sp)
497
498 __DEFINE_SET_REG(AR_KR0, ar0)
499 __DEFINE_SET_REG(AR_KR1, ar1)
500 __DEFINE_SET_REG(AR_KR2, ar2)
501 __DEFINE_SET_REG(AR_KR3, ar3)
502 __DEFINE_SET_REG(AR_KR4, ar4)
503 __DEFINE_SET_REG(AR_KR5, ar5)
504 __DEFINE_SET_REG(AR_KR6, ar6)
505 __DEFINE_SET_REG(AR_KR7, ar7)
506 __DEFINE_SET_AR(RSC, rsc)
507 __DEFINE_SET_AR(BSP, bsp)
508 __DEFINE_SET_AR(BSPSTORE, bspstore)
509 __DEFINE_SET_AR(RNAT, rnat)
510 __DEFINE_SET_AR(FCR, fcr)
511 __DEFINE_SET_AR(EFLAG, eflag)
512 __DEFINE_SET_AR(CSD, csd)
513 __DEFINE_SET_AR(SSD, ssd)
514 __DEFINE_SET_REG(AR_CFLAG, ar27)
515 __DEFINE_SET_AR(FSR, fsr)
516 __DEFINE_SET_AR(FIR, fir)
517 __DEFINE_SET_AR(FDR, fdr)
518 __DEFINE_SET_AR(CCV, ccv)
519 __DEFINE_SET_AR(UNAT, unat)
520 __DEFINE_SET_AR(FPSR, fpsr)
521 __DEFINE_SET_AR(ITC, itc)
522 __DEFINE_SET_AR(PFS, pfs)
523 __DEFINE_SET_AR(LC, lc)
524 __DEFINE_SET_AR(EC, ec)
525
526 __DEFINE_SET_CR(DCR, dcr)
527 __DEFINE_SET_CR(ITM, itm)
528 __DEFINE_SET_CR(IVA, iva)
529 __DEFINE_SET_CR(PTA, pta)
530 __DEFINE_SET_CR(IPSR, ipsr)
531 __DEFINE_SET_CR(ISR, isr)
532 __DEFINE_SET_CR(IIP, iip)
533 __DEFINE_SET_CR(IFA, ifa)
534 __DEFINE_SET_CR(ITIR, itir)
535 __DEFINE_SET_CR(IIPA, iipa)
536 __DEFINE_SET_CR(IFS, ifs)
537 __DEFINE_SET_CR(IIM, iim)
538 __DEFINE_SET_CR(IHA, iha)
539 __DEFINE_SET_CR(LID, lid)
540 __DEFINE_SET_CR(IVR, ivr)
541 __DEFINE_SET_CR(TPR, tpr)
542 __DEFINE_SET_CR(EOI, eoi)
543 __DEFINE_SET_CR(IRR0, irr0)
544 __DEFINE_SET_CR(IRR1, irr1)
545 __DEFINE_SET_CR(IRR2, irr2)
546 __DEFINE_SET_CR(IRR3, irr3)
547 __DEFINE_SET_CR(ITV, itv)
548 __DEFINE_SET_CR(PMV, pmv)
549 __DEFINE_SET_CR(CMCV, cmcv)
550 __DEFINE_SET_CR(LRR0, lrr0)
551 __DEFINE_SET_CR(LRR1, lrr1)
552 );
553#endif
277 554
278struct pv_cpu_ops pv_cpu_ops = { 555struct pv_cpu_ops pv_cpu_ops = {
279 .fc = ia64_native_fc_func, 556 .fc = ia64_native_fc_func,
@@ -366,4 +643,258 @@ ia64_native_do_steal_accounting(unsigned long *new_itm)
366 643
367struct pv_time_ops pv_time_ops = { 644struct pv_time_ops pv_time_ops = {
368 .do_steal_accounting = ia64_native_do_steal_accounting, 645 .do_steal_accounting = ia64_native_do_steal_accounting,
646 .sched_clock = ia64_native_sched_clock,
647};
648
649/***************************************************************************
650 * binary pacthing
651 * pv_init_ops.patch_bundle
652 */
653
654#ifdef ASM_SUPPORTED
655#define IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg) \
656 __DEFINE_FUNC(get_ ## name, \
657 ";;\n" \
658 "mov r8 = " #reg "\n" \
659 ";;\n")
660
661#define IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
662 __DEFINE_FUNC(set_ ## name, \
663 ";;\n" \
664 "mov " #reg " = r8\n" \
665 ";;\n")
666
667#define IA64_NATIVE_PATCH_DEFINE_REG(name, reg) \
668 IA64_NATIVE_PATCH_DEFINE_GET_REG(name, reg); \
669 IA64_NATIVE_PATCH_DEFINE_SET_REG(name, reg) \
670
671#define IA64_NATIVE_PATCH_DEFINE_AR(name, reg) \
672 IA64_NATIVE_PATCH_DEFINE_REG(ar_ ## name, ar.reg)
673
674#define IA64_NATIVE_PATCH_DEFINE_CR(name, reg) \
675 IA64_NATIVE_PATCH_DEFINE_REG(cr_ ## name, cr.reg)
676
677
678IA64_NATIVE_PATCH_DEFINE_GET_REG(psr, psr);
679IA64_NATIVE_PATCH_DEFINE_GET_REG(tp, tp);
680
681/* IA64_NATIVE_PATCH_DEFINE_SET_REG(psr_l, psr.l); */
682__DEFINE_FUNC(set_psr_l,
683 ";;\n"
684 "mov psr.l = r8\n"
685#ifdef HAVE_SERIALIZE_DIRECTIVE
686 ".serialize.data\n"
687#endif
688 ";;\n");
689
690IA64_NATIVE_PATCH_DEFINE_REG(gp, gp);
691IA64_NATIVE_PATCH_DEFINE_REG(sp, sp);
692
693IA64_NATIVE_PATCH_DEFINE_REG(kr0, ar0);
694IA64_NATIVE_PATCH_DEFINE_REG(kr1, ar1);
695IA64_NATIVE_PATCH_DEFINE_REG(kr2, ar2);
696IA64_NATIVE_PATCH_DEFINE_REG(kr3, ar3);
697IA64_NATIVE_PATCH_DEFINE_REG(kr4, ar4);
698IA64_NATIVE_PATCH_DEFINE_REG(kr5, ar5);
699IA64_NATIVE_PATCH_DEFINE_REG(kr6, ar6);
700IA64_NATIVE_PATCH_DEFINE_REG(kr7, ar7);
701
702IA64_NATIVE_PATCH_DEFINE_AR(rsc, rsc);
703IA64_NATIVE_PATCH_DEFINE_AR(bsp, bsp);
704IA64_NATIVE_PATCH_DEFINE_AR(bspstore, bspstore);
705IA64_NATIVE_PATCH_DEFINE_AR(rnat, rnat);
706IA64_NATIVE_PATCH_DEFINE_AR(fcr, fcr);
707IA64_NATIVE_PATCH_DEFINE_AR(eflag, eflag);
708IA64_NATIVE_PATCH_DEFINE_AR(csd, csd);
709IA64_NATIVE_PATCH_DEFINE_AR(ssd, ssd);
710IA64_NATIVE_PATCH_DEFINE_REG(ar27, ar27);
711IA64_NATIVE_PATCH_DEFINE_AR(fsr, fsr);
712IA64_NATIVE_PATCH_DEFINE_AR(fir, fir);
713IA64_NATIVE_PATCH_DEFINE_AR(fdr, fdr);
714IA64_NATIVE_PATCH_DEFINE_AR(ccv, ccv);
715IA64_NATIVE_PATCH_DEFINE_AR(unat, unat);
716IA64_NATIVE_PATCH_DEFINE_AR(fpsr, fpsr);
717IA64_NATIVE_PATCH_DEFINE_AR(itc, itc);
718IA64_NATIVE_PATCH_DEFINE_AR(pfs, pfs);
719IA64_NATIVE_PATCH_DEFINE_AR(lc, lc);
720IA64_NATIVE_PATCH_DEFINE_AR(ec, ec);
721
722IA64_NATIVE_PATCH_DEFINE_CR(dcr, dcr);
723IA64_NATIVE_PATCH_DEFINE_CR(itm, itm);
724IA64_NATIVE_PATCH_DEFINE_CR(iva, iva);
725IA64_NATIVE_PATCH_DEFINE_CR(pta, pta);
726IA64_NATIVE_PATCH_DEFINE_CR(ipsr, ipsr);
727IA64_NATIVE_PATCH_DEFINE_CR(isr, isr);
728IA64_NATIVE_PATCH_DEFINE_CR(iip, iip);
729IA64_NATIVE_PATCH_DEFINE_CR(ifa, ifa);
730IA64_NATIVE_PATCH_DEFINE_CR(itir, itir);
731IA64_NATIVE_PATCH_DEFINE_CR(iipa, iipa);
732IA64_NATIVE_PATCH_DEFINE_CR(ifs, ifs);
733IA64_NATIVE_PATCH_DEFINE_CR(iim, iim);
734IA64_NATIVE_PATCH_DEFINE_CR(iha, iha);
735IA64_NATIVE_PATCH_DEFINE_CR(lid, lid);
736IA64_NATIVE_PATCH_DEFINE_CR(ivr, ivr);
737IA64_NATIVE_PATCH_DEFINE_CR(tpr, tpr);
738IA64_NATIVE_PATCH_DEFINE_CR(eoi, eoi);
739IA64_NATIVE_PATCH_DEFINE_CR(irr0, irr0);
740IA64_NATIVE_PATCH_DEFINE_CR(irr1, irr1);
741IA64_NATIVE_PATCH_DEFINE_CR(irr2, irr2);
742IA64_NATIVE_PATCH_DEFINE_CR(irr3, irr3);
743IA64_NATIVE_PATCH_DEFINE_CR(itv, itv);
744IA64_NATIVE_PATCH_DEFINE_CR(pmv, pmv);
745IA64_NATIVE_PATCH_DEFINE_CR(cmcv, cmcv);
746IA64_NATIVE_PATCH_DEFINE_CR(lrr0, lrr0);
747IA64_NATIVE_PATCH_DEFINE_CR(lrr1, lrr1);
748
749static const struct paravirt_patch_bundle_elem ia64_native_patch_bundle_elems[]
750__initdata_or_module =
751{
752#define IA64_NATIVE_PATCH_BUNDLE_ELEM(name, type) \
753 { \
754 (void*)ia64_native_ ## name ## _direct_start, \
755 (void*)ia64_native_ ## name ## _direct_end, \
756 PARAVIRT_PATCH_TYPE_ ## type, \
757 }
758
759 IA64_NATIVE_PATCH_BUNDLE_ELEM(fc, FC),
760 IA64_NATIVE_PATCH_BUNDLE_ELEM(thash, THASH),
761 IA64_NATIVE_PATCH_BUNDLE_ELEM(get_cpuid, GET_CPUID),
762 IA64_NATIVE_PATCH_BUNDLE_ELEM(get_pmd, GET_PMD),
763 IA64_NATIVE_PATCH_BUNDLE_ELEM(ptcga, PTCGA),
764 IA64_NATIVE_PATCH_BUNDLE_ELEM(get_rr, GET_RR),
765 IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr, SET_RR),
766 IA64_NATIVE_PATCH_BUNDLE_ELEM(set_rr0_to_rr4, SET_RR0_TO_RR4),
767 IA64_NATIVE_PATCH_BUNDLE_ELEM(ssm_i, SSM_I),
768 IA64_NATIVE_PATCH_BUNDLE_ELEM(rsm_i, RSM_I),
769 IA64_NATIVE_PATCH_BUNDLE_ELEM(get_psr_i, GET_PSR_I),
770 IA64_NATIVE_PATCH_BUNDLE_ELEM(intrin_local_irq_restore,
771 INTRIN_LOCAL_IRQ_RESTORE),
772
773#define IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg) \
774 { \
775 (void*)ia64_native_get_ ## name ## _direct_start, \
776 (void*)ia64_native_get_ ## name ## _direct_end, \
777 PARAVIRT_PATCH_TYPE_GETREG + _IA64_REG_ ## reg, \
778 }
779
780#define IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
781 { \
782 (void*)ia64_native_set_ ## name ## _direct_start, \
783 (void*)ia64_native_set_ ## name ## _direct_end, \
784 PARAVIRT_PATCH_TYPE_SETREG + _IA64_REG_ ## reg, \
785 }
786
787#define IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(name, reg) \
788 IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(name, reg), \
789 IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
790
791#define IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(name, reg) \
792 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar_ ## name, AR_ ## reg)
793
794#define IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(name, reg) \
795 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(cr_ ## name, CR_ ## reg)
796
797 IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(psr, PSR),
798 IA64_NATIVE_PATCH_BUNDLE_ELEM_GETREG(tp, TP),
799
800 IA64_NATIVE_PATCH_BUNDLE_ELEM_SETREG(psr_l, PSR_L),
801
802 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(gp, GP),
803 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(sp, SP),
804
805 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr0, AR_KR0),
806 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr1, AR_KR1),
807 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr2, AR_KR2),
808 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr3, AR_KR3),
809 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr4, AR_KR4),
810 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr5, AR_KR5),
811 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr6, AR_KR6),
812 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(kr7, AR_KR7),
813
814 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rsc, RSC),
815 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bsp, BSP),
816 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(bspstore, BSPSTORE),
817 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(rnat, RNAT),
818 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fcr, FCR),
819 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(eflag, EFLAG),
820 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(csd, CSD),
821 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ssd, SSD),
822 IA64_NATIVE_PATCH_BUNDLE_ELEM_REG(ar27, AR_CFLAG),
823 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fsr, FSR),
824 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fir, FIR),
825 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fdr, FDR),
826 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ccv, CCV),
827 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(unat, UNAT),
828 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(fpsr, FPSR),
829 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(itc, ITC),
830 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(pfs, PFS),
831 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(lc, LC),
832 IA64_NATIVE_PATCH_BUNDLE_ELEM_AR(ec, EC),
833
834 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(dcr, DCR),
835 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itm, ITM),
836 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iva, IVA),
837 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pta, PTA),
838 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ipsr, IPSR),
839 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(isr, ISR),
840 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iip, IIP),
841 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifa, IFA),
842 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itir, ITIR),
843 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iipa, IIPA),
844 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ifs, IFS),
845 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iim, IIM),
846 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(iha, IHA),
847 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lid, LID),
848 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(ivr, IVR),
849 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(tpr, TPR),
850 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(eoi, EOI),
851 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr0, IRR0),
852 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr1, IRR1),
853 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr2, IRR2),
854 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(irr3, IRR3),
855 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(itv, ITV),
856 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(pmv, PMV),
857 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(cmcv, CMCV),
858 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr0, LRR0),
859 IA64_NATIVE_PATCH_BUNDLE_ELEM_CR(lrr1, LRR1),
369}; 860};
861
862unsigned long __init_or_module
863ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type)
864{
865 const unsigned long nelems = sizeof(ia64_native_patch_bundle_elems) /
866 sizeof(ia64_native_patch_bundle_elems[0]);
867
868 return __paravirt_patch_apply_bundle(sbundle, ebundle, type,
869 ia64_native_patch_bundle_elems,
870 nelems, NULL);
871}
872#endif /* ASM_SUPPOTED */
873
874extern const char ia64_native_switch_to[];
875extern const char ia64_native_leave_syscall[];
876extern const char ia64_native_work_processed_syscall[];
877extern const char ia64_native_leave_kernel[];
878
879const struct paravirt_patch_branch_target ia64_native_branch_target[]
880__initconst = {
881#define PARAVIRT_BR_TARGET(name, type) \
882 { \
883 ia64_native_ ## name, \
884 PARAVIRT_PATCH_TYPE_BR_ ## type, \
885 }
886 PARAVIRT_BR_TARGET(switch_to, SWITCH_TO),
887 PARAVIRT_BR_TARGET(leave_syscall, LEAVE_SYSCALL),
888 PARAVIRT_BR_TARGET(work_processed_syscall, WORK_PROCESSED_SYSCALL),
889 PARAVIRT_BR_TARGET(leave_kernel, LEAVE_KERNEL),
890};
891
892static void __init
893ia64_native_patch_branch(unsigned long tag, unsigned long type)
894{
895 const unsigned long nelem =
896 sizeof(ia64_native_branch_target) /
897 sizeof(ia64_native_branch_target[0]);
898 __paravirt_patch_apply_branch(tag, type,
899 ia64_native_branch_target, nelem);
900}
diff --git a/arch/ia64/kernel/paravirt_patch.c b/arch/ia64/kernel/paravirt_patch.c
new file mode 100644
index 00000000000..bfdfef1b1ff
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_patch.c
@@ -0,0 +1,514 @@
1/******************************************************************************
2 * linux/arch/ia64/xen/paravirt_patch.c
3 *
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#include <linux/init.h>
24#include <asm/intrinsics.h>
25#include <asm/kprobes.h>
26#include <asm/paravirt.h>
27#include <asm/paravirt_patch.h>
28
29typedef union ia64_inst {
30 struct {
31 unsigned long long qp : 6;
32 unsigned long long : 31;
33 unsigned long long opcode : 4;
34 unsigned long long reserved : 23;
35 } generic;
36 unsigned long long l;
37} ia64_inst_t;
38
39/*
40 * flush_icache_range() can't be used here.
41 * we are here before cpu_init() which initializes
42 * ia64_i_cache_stride_shift. flush_icache_range() uses it.
43 */
44void __init_or_module
45paravirt_flush_i_cache_range(const void *instr, unsigned long size)
46{
47 extern void paravirt_fc_i(const void *addr);
48 unsigned long i;
49
50 for (i = 0; i < size; i += sizeof(bundle_t))
51 paravirt_fc_i(instr + i);
52}
53
54bundle_t* __init_or_module
55paravirt_get_bundle(unsigned long tag)
56{
57 return (bundle_t *)(tag & ~3UL);
58}
59
60unsigned long __init_or_module
61paravirt_get_slot(unsigned long tag)
62{
63 return tag & 3UL;
64}
65
66unsigned long __init_or_module
67paravirt_get_num_inst(unsigned long stag, unsigned long etag)
68{
69 bundle_t *sbundle = paravirt_get_bundle(stag);
70 unsigned long sslot = paravirt_get_slot(stag);
71 bundle_t *ebundle = paravirt_get_bundle(etag);
72 unsigned long eslot = paravirt_get_slot(etag);
73
74 return (ebundle - sbundle) * 3 + eslot - sslot + 1;
75}
76
77unsigned long __init_or_module
78paravirt_get_next_tag(unsigned long tag)
79{
80 unsigned long slot = paravirt_get_slot(tag);
81
82 switch (slot) {
83 case 0:
84 case 1:
85 return tag + 1;
86 case 2: {
87 bundle_t *bundle = paravirt_get_bundle(tag);
88 return (unsigned long)(bundle + 1);
89 }
90 default:
91 BUG();
92 }
93 /* NOTREACHED */
94}
95
96ia64_inst_t __init_or_module
97paravirt_read_slot0(const bundle_t *bundle)
98{
99 ia64_inst_t inst;
100 inst.l = bundle->quad0.slot0;
101 return inst;
102}
103
104ia64_inst_t __init_or_module
105paravirt_read_slot1(const bundle_t *bundle)
106{
107 ia64_inst_t inst;
108 inst.l = bundle->quad0.slot1_p0 |
109 ((unsigned long long)bundle->quad1.slot1_p1 << 18UL);
110 return inst;
111}
112
113ia64_inst_t __init_or_module
114paravirt_read_slot2(const bundle_t *bundle)
115{
116 ia64_inst_t inst;
117 inst.l = bundle->quad1.slot2;
118 return inst;
119}
120
121ia64_inst_t __init_or_module
122paravirt_read_inst(unsigned long tag)
123{
124 bundle_t *bundle = paravirt_get_bundle(tag);
125 unsigned long slot = paravirt_get_slot(tag);
126
127 switch (slot) {
128 case 0:
129 return paravirt_read_slot0(bundle);
130 case 1:
131 return paravirt_read_slot1(bundle);
132 case 2:
133 return paravirt_read_slot2(bundle);
134 default:
135 BUG();
136 }
137 /* NOTREACHED */
138}
139
140void __init_or_module
141paravirt_write_slot0(bundle_t *bundle, ia64_inst_t inst)
142{
143 bundle->quad0.slot0 = inst.l;
144}
145
146void __init_or_module
147paravirt_write_slot1(bundle_t *bundle, ia64_inst_t inst)
148{
149 bundle->quad0.slot1_p0 = inst.l;
150 bundle->quad1.slot1_p1 = inst.l >> 18UL;
151}
152
153void __init_or_module
154paravirt_write_slot2(bundle_t *bundle, ia64_inst_t inst)
155{
156 bundle->quad1.slot2 = inst.l;
157}
158
159void __init_or_module
160paravirt_write_inst(unsigned long tag, ia64_inst_t inst)
161{
162 bundle_t *bundle = paravirt_get_bundle(tag);
163 unsigned long slot = paravirt_get_slot(tag);
164
165 switch (slot) {
166 case 0:
167 paravirt_write_slot0(bundle, inst);
168 break;
169 case 1:
170 paravirt_write_slot1(bundle, inst);
171 break;
172 case 2:
173 paravirt_write_slot2(bundle, inst);
174 break;
175 default:
176 BUG();
177 break;
178 }
179 paravirt_flush_i_cache_range(bundle, sizeof(*bundle));
180}
181
182/* for debug */
183void
184paravirt_print_bundle(const bundle_t *bundle)
185{
186 const unsigned long *quad = (const unsigned long *)bundle;
187 ia64_inst_t slot0 = paravirt_read_slot0(bundle);
188 ia64_inst_t slot1 = paravirt_read_slot1(bundle);
189 ia64_inst_t slot2 = paravirt_read_slot2(bundle);
190
191 printk(KERN_DEBUG
192 "bundle 0x%p 0x%016lx 0x%016lx\n", bundle, quad[0], quad[1]);
193 printk(KERN_DEBUG
194 "bundle template 0x%x\n",
195 bundle->quad0.template);
196 printk(KERN_DEBUG
197 "slot0 0x%lx slot1_p0 0x%lx slot1_p1 0x%lx slot2 0x%lx\n",
198 (unsigned long)bundle->quad0.slot0,
199 (unsigned long)bundle->quad0.slot1_p0,
200 (unsigned long)bundle->quad1.slot1_p1,
201 (unsigned long)bundle->quad1.slot2);
202 printk(KERN_DEBUG
203 "slot0 0x%016llx slot1 0x%016llx slot2 0x%016llx\n",
204 slot0.l, slot1.l, slot2.l);
205}
206
207static int noreplace_paravirt __init_or_module = 0;
208
209static int __init setup_noreplace_paravirt(char *str)
210{
211 noreplace_paravirt = 1;
212 return 1;
213}
214__setup("noreplace-paravirt", setup_noreplace_paravirt);
215
216#ifdef ASM_SUPPORTED
217static void __init_or_module
218fill_nop_bundle(void *sbundle, void *ebundle)
219{
220 extern const char paravirt_nop_bundle[];
221 extern const unsigned long paravirt_nop_bundle_size;
222
223 void *bundle = sbundle;
224
225 BUG_ON((((unsigned long)sbundle) % sizeof(bundle_t)) != 0);
226 BUG_ON((((unsigned long)ebundle) % sizeof(bundle_t)) != 0);
227
228 while (bundle < ebundle) {
229 memcpy(bundle, paravirt_nop_bundle, paravirt_nop_bundle_size);
230
231 bundle += paravirt_nop_bundle_size;
232 }
233}
234
235/* helper function */
236unsigned long __init_or_module
237__paravirt_patch_apply_bundle(void *sbundle, void *ebundle, unsigned long type,
238 const struct paravirt_patch_bundle_elem *elems,
239 unsigned long nelems,
240 const struct paravirt_patch_bundle_elem **found)
241{
242 unsigned long used = 0;
243 unsigned long i;
244
245 BUG_ON((((unsigned long)sbundle) % sizeof(bundle_t)) != 0);
246 BUG_ON((((unsigned long)ebundle) % sizeof(bundle_t)) != 0);
247
248 found = NULL;
249 for (i = 0; i < nelems; i++) {
250 const struct paravirt_patch_bundle_elem *p = &elems[i];
251 if (p->type == type) {
252 unsigned long need = p->ebundle - p->sbundle;
253 unsigned long room = ebundle - sbundle;
254
255 if (found != NULL)
256 *found = p;
257
258 if (room < need) {
259 /* no room to replace. skip it */
260 printk(KERN_DEBUG
261 "the space is too small to put "
262 "bundles. type %ld need %ld room %ld\n",
263 type, need, room);
264 break;
265 }
266
267 used = need;
268 memcpy(sbundle, p->sbundle, used);
269 break;
270 }
271 }
272
273 return used;
274}
275
276void __init_or_module
277paravirt_patch_apply_bundle(const struct paravirt_patch_site_bundle *start,
278 const struct paravirt_patch_site_bundle *end)
279{
280 const struct paravirt_patch_site_bundle *p;
281
282 if (noreplace_paravirt)
283 return;
284 if (pv_init_ops.patch_bundle == NULL)
285 return;
286
287 for (p = start; p < end; p++) {
288 unsigned long used;
289
290 used = (*pv_init_ops.patch_bundle)(p->sbundle, p->ebundle,
291 p->type);
292 if (used == 0)
293 continue;
294
295 fill_nop_bundle(p->sbundle + used, p->ebundle);
296 paravirt_flush_i_cache_range(p->sbundle,
297 p->ebundle - p->sbundle);
298 }
299 ia64_sync_i();
300 ia64_srlz_i();
301}
302
303/*
304 * nop.i, nop.m, nop.f instruction are same format.
305 * but nop.b has differennt format.
306 * This doesn't support nop.b for now.
307 */
308static void __init_or_module
309fill_nop_inst(unsigned long stag, unsigned long etag)
310{
311 extern const bundle_t paravirt_nop_mfi_inst_bundle[];
312 unsigned long tag;
313 const ia64_inst_t nop_inst =
314 paravirt_read_slot0(paravirt_nop_mfi_inst_bundle);
315
316 for (tag = stag; tag < etag; tag = paravirt_get_next_tag(tag))
317 paravirt_write_inst(tag, nop_inst);
318}
319
320void __init_or_module
321paravirt_patch_apply_inst(const struct paravirt_patch_site_inst *start,
322 const struct paravirt_patch_site_inst *end)
323{
324 const struct paravirt_patch_site_inst *p;
325
326 if (noreplace_paravirt)
327 return;
328 if (pv_init_ops.patch_inst == NULL)
329 return;
330
331 for (p = start; p < end; p++) {
332 unsigned long tag;
333 bundle_t *sbundle;
334 bundle_t *ebundle;
335
336 tag = (*pv_init_ops.patch_inst)(p->stag, p->etag, p->type);
337 if (tag == p->stag)
338 continue;
339
340 fill_nop_inst(tag, p->etag);
341 sbundle = paravirt_get_bundle(p->stag);
342 ebundle = paravirt_get_bundle(p->etag) + 1;
343 paravirt_flush_i_cache_range(sbundle, (ebundle - sbundle) *
344 sizeof(bundle_t));
345 }
346 ia64_sync_i();
347 ia64_srlz_i();
348}
349#endif /* ASM_SUPPOTED */
350
351/* brl.cond.sptk.many <target64> X3 */
352typedef union inst_x3_op {
353 ia64_inst_t inst;
354 struct {
355 unsigned long qp: 6;
356 unsigned long btyp: 3;
357 unsigned long unused: 3;
358 unsigned long p: 1;
359 unsigned long imm20b: 20;
360 unsigned long wh: 2;
361 unsigned long d: 1;
362 unsigned long i: 1;
363 unsigned long opcode: 4;
364 };
365 unsigned long l;
366} inst_x3_op_t;
367
368typedef union inst_x3_imm {
369 ia64_inst_t inst;
370 struct {
371 unsigned long unused: 2;
372 unsigned long imm39: 39;
373 };
374 unsigned long l;
375} inst_x3_imm_t;
376
377void __init_or_module
378paravirt_patch_reloc_brl(unsigned long tag, const void *target)
379{
380 unsigned long tag_op = paravirt_get_next_tag(tag);
381 unsigned long tag_imm = tag;
382 bundle_t *bundle = paravirt_get_bundle(tag);
383
384 ia64_inst_t inst_op = paravirt_read_inst(tag_op);
385 ia64_inst_t inst_imm = paravirt_read_inst(tag_imm);
386
387 inst_x3_op_t inst_x3_op = { .l = inst_op.l };
388 inst_x3_imm_t inst_x3_imm = { .l = inst_imm.l };
389
390 unsigned long imm60 =
391 ((unsigned long)target - (unsigned long)bundle) >> 4;
392
393 BUG_ON(paravirt_get_slot(tag) != 1); /* MLX */
394 BUG_ON(((unsigned long)target & (sizeof(bundle_t) - 1)) != 0);
395
396 /* imm60[59] 1bit */
397 inst_x3_op.i = (imm60 >> 59) & 1;
398 /* imm60[19:0] 20bit */
399 inst_x3_op.imm20b = imm60 & ((1UL << 20) - 1);
400 /* imm60[58:20] 39bit */
401 inst_x3_imm.imm39 = (imm60 >> 20) & ((1UL << 39) - 1);
402
403 inst_op.l = inst_x3_op.l;
404 inst_imm.l = inst_x3_imm.l;
405
406 paravirt_write_inst(tag_op, inst_op);
407 paravirt_write_inst(tag_imm, inst_imm);
408}
409
410/* br.cond.sptk.many <target25> B1 */
411typedef union inst_b1 {
412 ia64_inst_t inst;
413 struct {
414 unsigned long qp: 6;
415 unsigned long btype: 3;
416 unsigned long unused: 3;
417 unsigned long p: 1;
418 unsigned long imm20b: 20;
419 unsigned long wh: 2;
420 unsigned long d: 1;
421 unsigned long s: 1;
422 unsigned long opcode: 4;
423 };
424 unsigned long l;
425} inst_b1_t;
426
427void __init
428paravirt_patch_reloc_br(unsigned long tag, const void *target)
429{
430 bundle_t *bundle = paravirt_get_bundle(tag);
431 ia64_inst_t inst = paravirt_read_inst(tag);
432 unsigned long target25 = (unsigned long)target - (unsigned long)bundle;
433 inst_b1_t inst_b1;
434
435 BUG_ON(((unsigned long)target & (sizeof(bundle_t) - 1)) != 0);
436
437 inst_b1.l = inst.l;
438 if (target25 & (1UL << 63))
439 inst_b1.s = 1;
440 else
441 inst_b1.s = 0;
442
443 inst_b1.imm20b = target25 >> 4;
444 inst.l = inst_b1.l;
445
446 paravirt_write_inst(tag, inst);
447}
448
449void __init
450__paravirt_patch_apply_branch(
451 unsigned long tag, unsigned long type,
452 const struct paravirt_patch_branch_target *entries,
453 unsigned int nr_entries)
454{
455 unsigned int i;
456 for (i = 0; i < nr_entries; i++) {
457 if (entries[i].type == type) {
458 paravirt_patch_reloc_br(tag, entries[i].entry);
459 break;
460 }
461 }
462}
463
464static void __init
465paravirt_patch_apply_branch(const struct paravirt_patch_site_branch *start,
466 const struct paravirt_patch_site_branch *end)
467{
468 const struct paravirt_patch_site_branch *p;
469
470 if (noreplace_paravirt)
471 return;
472 if (pv_init_ops.patch_branch == NULL)
473 return;
474
475 for (p = start; p < end; p++)
476 (*pv_init_ops.patch_branch)(p->tag, p->type);
477
478 ia64_sync_i();
479 ia64_srlz_i();
480}
481
482void __init
483paravirt_patch_apply(void)
484{
485 extern const char __start_paravirt_bundles[];
486 extern const char __stop_paravirt_bundles[];
487 extern const char __start_paravirt_insts[];
488 extern const char __stop_paravirt_insts[];
489 extern const char __start_paravirt_branches[];
490 extern const char __stop_paravirt_branches[];
491
492 paravirt_patch_apply_bundle((const struct paravirt_patch_site_bundle *)
493 __start_paravirt_bundles,
494 (const struct paravirt_patch_site_bundle *)
495 __stop_paravirt_bundles);
496 paravirt_patch_apply_inst((const struct paravirt_patch_site_inst *)
497 __start_paravirt_insts,
498 (const struct paravirt_patch_site_inst *)
499 __stop_paravirt_insts);
500 paravirt_patch_apply_branch((const struct paravirt_patch_site_branch *)
501 __start_paravirt_branches,
502 (const struct paravirt_patch_site_branch *)
503 __stop_paravirt_branches);
504}
505
506/*
507 * Local variables:
508 * mode: C
509 * c-set-style: "linux"
510 * c-basic-offset: 8
511 * tab-width: 8
512 * indent-tabs-mode: t
513 * End:
514 */
diff --git a/arch/ia64/kernel/paravirt_patchlist.c b/arch/ia64/kernel/paravirt_patchlist.c
new file mode 100644
index 00000000000..b28082a95d4
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_patchlist.c
@@ -0,0 +1,79 @@
1/******************************************************************************
2 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
3 * VA Linux Systems Japan K.K.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
21#include <linux/bug.h>
22#include <asm/paravirt.h>
23
24#define DECLARE(name) \
25 extern unsigned long \
26 __ia64_native_start_gate_##name##_patchlist[]; \
27 extern unsigned long \
28 __ia64_native_end_gate_##name##_patchlist[]
29
30DECLARE(fsyscall);
31DECLARE(brl_fsys_bubble_down);
32DECLARE(vtop);
33DECLARE(mckinley_e9);
34
35extern unsigned long __start_gate_section[];
36
37#define ASSIGN(name) \
38 .start_##name##_patchlist = \
39 (unsigned long)__ia64_native_start_gate_##name##_patchlist, \
40 .end_##name##_patchlist = \
41 (unsigned long)__ia64_native_end_gate_##name##_patchlist
42
43struct pv_patchdata pv_patchdata __initdata = {
44 ASSIGN(fsyscall),
45 ASSIGN(brl_fsys_bubble_down),
46 ASSIGN(vtop),
47 ASSIGN(mckinley_e9),
48
49 .gate_section = (void*)__start_gate_section,
50};
51
52
53unsigned long __init
54paravirt_get_gate_patchlist(enum pv_gate_patchlist type)
55{
56
57#define CASE(NAME, name) \
58 case PV_GATE_START_##NAME: \
59 return pv_patchdata.start_##name##_patchlist; \
60 case PV_GATE_END_##NAME: \
61 return pv_patchdata.end_##name##_patchlist; \
62
63 switch (type) {
64 CASE(FSYSCALL, fsyscall);
65 CASE(BRL_FSYS_BUBBLE_DOWN, brl_fsys_bubble_down);
66 CASE(VTOP, vtop);
67 CASE(MCKINLEY_E9, mckinley_e9);
68 default:
69 BUG();
70 break;
71 }
72 return 0;
73}
74
75void * __init
76paravirt_get_gate_section(void)
77{
78 return pv_patchdata.gate_section;
79}
diff --git a/arch/ia64/kernel/paravirt_patchlist.h b/arch/ia64/kernel/paravirt_patchlist.h
new file mode 100644
index 00000000000..0684aa6c650
--- /dev/null
+++ b/arch/ia64/kernel/paravirt_patchlist.h
@@ -0,0 +1,28 @@
1/******************************************************************************
2 * linux/arch/ia64/xen/paravirt_patchlist.h
3 *
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23#if defined(__IA64_GATE_PARAVIRTUALIZED_XEN)
24#include <asm/xen/patchlist.h>
25#else
26#include <asm/native/patchlist.h>
27#endif
28
diff --git a/arch/ia64/kernel/paravirtentry.S b/arch/ia64/kernel/paravirtentry.S
index 2f42fcb9776..6158560d7f1 100644
--- a/arch/ia64/kernel/paravirtentry.S
+++ b/arch/ia64/kernel/paravirtentry.S
@@ -20,8 +20,11 @@
20 * 20 *
21 */ 21 */
22 22
23#include <linux/init.h>
23#include <asm/asmmacro.h> 24#include <asm/asmmacro.h>
24#include <asm/asm-offsets.h> 25#include <asm/asm-offsets.h>
26#include <asm/paravirt_privop.h>
27#include <asm/paravirt_patch.h>
25#include "entry.h" 28#include "entry.h"
26 29
27#define DATA8(sym, init_value) \ 30#define DATA8(sym, init_value) \
@@ -32,29 +35,87 @@
32 data8 init_value ; \ 35 data8 init_value ; \
33 .popsection 36 .popsection
34 37
35#define BRANCH(targ, reg, breg) \ 38#define BRANCH(targ, reg, breg, type) \
36 movl reg=targ ; \ 39 PARAVIRT_PATCH_SITE_BR(PARAVIRT_PATCH_TYPE_BR_ ## type) ; \
37 ;; \ 40 ;; \
38 ld8 reg=[reg] ; \ 41 movl reg=targ ; \
39 ;; \ 42 ;; \
40 mov breg=reg ; \ 43 ld8 reg=[reg] ; \
44 ;; \
45 mov breg=reg ; \
41 br.cond.sptk.many breg 46 br.cond.sptk.many breg
42 47
43#define BRANCH_PROC(sym, reg, breg) \ 48#define BRANCH_PROC(sym, reg, breg, type) \
44 DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \ 49 DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
45 GLOBAL_ENTRY(paravirt_ ## sym) ; \ 50 GLOBAL_ENTRY(paravirt_ ## sym) ; \
46 BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \ 51 BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
47 END(paravirt_ ## sym) 52 END(paravirt_ ## sym)
48 53
49#define BRANCH_PROC_UNWINFO(sym, reg, breg) \ 54#define BRANCH_PROC_UNWINFO(sym, reg, breg, type) \
50 DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \ 55 DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
51 GLOBAL_ENTRY(paravirt_ ## sym) ; \ 56 GLOBAL_ENTRY(paravirt_ ## sym) ; \
52 PT_REGS_UNWIND_INFO(0) ; \ 57 PT_REGS_UNWIND_INFO(0) ; \
53 BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \ 58 BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
54 END(paravirt_ ## sym) 59 END(paravirt_ ## sym)
55 60
56 61
57BRANCH_PROC(switch_to, r22, b7) 62BRANCH_PROC(switch_to, r22, b7, SWITCH_TO)
58BRANCH_PROC_UNWINFO(leave_syscall, r22, b7) 63BRANCH_PROC_UNWINFO(leave_syscall, r22, b7, LEAVE_SYSCALL)
59BRANCH_PROC(work_processed_syscall, r2, b7) 64BRANCH_PROC(work_processed_syscall, r2, b7, WORK_PROCESSED_SYSCALL)
60BRANCH_PROC_UNWINFO(leave_kernel, r22, b7) 65BRANCH_PROC_UNWINFO(leave_kernel, r22, b7, LEAVE_KERNEL)
66
67
68#ifdef CONFIG_MODULES
69#define __INIT_OR_MODULE .text
70#define __INITDATA_OR_MODULE .data
71#else
72#define __INIT_OR_MODULE __INIT
73#define __INITDATA_OR_MODULE __INITDATA
74#endif /* CONFIG_MODULES */
75
76 __INIT_OR_MODULE
77 GLOBAL_ENTRY(paravirt_fc_i)
78 fc.i r32
79 br.ret.sptk.many rp
80 END(paravirt_fc_i)
81 __FINIT
82
83 __INIT_OR_MODULE
84 .align 32
85 GLOBAL_ENTRY(paravirt_nop_b_inst_bundle)
86 {
87 nop.b 0
88 nop.b 0
89 nop.b 0
90 }
91 END(paravirt_nop_b_inst_bundle)
92 __FINIT
93
94 /* NOTE: nop.[mfi] has same format */
95 __INIT_OR_MODULE
96 GLOBAL_ENTRY(paravirt_nop_mfi_inst_bundle)
97 {
98 nop.m 0
99 nop.f 0
100 nop.i 0
101 }
102 END(paravirt_nop_mfi_inst_bundle)
103 __FINIT
104
105 __INIT_OR_MODULE
106 GLOBAL_ENTRY(paravirt_nop_bundle)
107paravirt_nop_bundle_start:
108 {
109 nop 0
110 nop 0
111 nop 0
112 }
113paravirt_nop_bundle_end:
114 END(paravirt_nop_bundle)
115 __FINIT
116
117 __INITDATA_OR_MODULE
118 .align 8
119 .global paravirt_nop_bundle_size
120paravirt_nop_bundle_size:
121 data8 paravirt_nop_bundle_end - paravirt_nop_bundle_start
diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c
index b83b2c51600..68a1311db80 100644
--- a/arch/ia64/kernel/patch.c
+++ b/arch/ia64/kernel/patch.c
@@ -7,6 +7,7 @@
7#include <linux/init.h> 7#include <linux/init.h>
8#include <linux/string.h> 8#include <linux/string.h>
9 9
10#include <asm/paravirt.h>
10#include <asm/patch.h> 11#include <asm/patch.h>
11#include <asm/processor.h> 12#include <asm/processor.h>
12#include <asm/sections.h> 13#include <asm/sections.h>
@@ -169,16 +170,35 @@ ia64_patch_mckinley_e9 (unsigned long start, unsigned long end)
169 ia64_srlz_i(); 170 ia64_srlz_i();
170} 171}
171 172
173extern unsigned long ia64_native_fsyscall_table[NR_syscalls];
174extern char ia64_native_fsys_bubble_down[];
175struct pv_fsys_data pv_fsys_data __initdata = {
176 .fsyscall_table = (unsigned long *)ia64_native_fsyscall_table,
177 .fsys_bubble_down = (void *)ia64_native_fsys_bubble_down,
178};
179
180unsigned long * __init
181paravirt_get_fsyscall_table(void)
182{
183 return pv_fsys_data.fsyscall_table;
184}
185
186char * __init
187paravirt_get_fsys_bubble_down(void)
188{
189 return pv_fsys_data.fsys_bubble_down;
190}
191
172static void __init 192static void __init
173patch_fsyscall_table (unsigned long start, unsigned long end) 193patch_fsyscall_table (unsigned long start, unsigned long end)
174{ 194{
175 extern unsigned long fsyscall_table[NR_syscalls]; 195 u64 fsyscall_table = (u64)paravirt_get_fsyscall_table();
176 s32 *offp = (s32 *) start; 196 s32 *offp = (s32 *) start;
177 u64 ip; 197 u64 ip;
178 198
179 while (offp < (s32 *) end) { 199 while (offp < (s32 *) end) {
180 ip = (u64) ia64_imva((char *) offp + *offp); 200 ip = (u64) ia64_imva((char *) offp + *offp);
181 ia64_patch_imm64(ip, (u64) fsyscall_table); 201 ia64_patch_imm64(ip, fsyscall_table);
182 ia64_fc((void *) ip); 202 ia64_fc((void *) ip);
183 ++offp; 203 ++offp;
184 } 204 }
@@ -189,7 +209,7 @@ patch_fsyscall_table (unsigned long start, unsigned long end)
189static void __init 209static void __init
190patch_brl_fsys_bubble_down (unsigned long start, unsigned long end) 210patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
191{ 211{
192 extern char fsys_bubble_down[]; 212 u64 fsys_bubble_down = (u64)paravirt_get_fsys_bubble_down();
193 s32 *offp = (s32 *) start; 213 s32 *offp = (s32 *) start;
194 u64 ip; 214 u64 ip;
195 215
@@ -207,13 +227,13 @@ patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
207void __init 227void __init
208ia64_patch_gate (void) 228ia64_patch_gate (void)
209{ 229{
210# define START(name) ((unsigned long) __start_gate_##name##_patchlist) 230# define START(name) paravirt_get_gate_patchlist(PV_GATE_START_##name)
211# define END(name) ((unsigned long)__end_gate_##name##_patchlist) 231# define END(name) paravirt_get_gate_patchlist(PV_GATE_END_##name)
212 232
213 patch_fsyscall_table(START(fsyscall), END(fsyscall)); 233 patch_fsyscall_table(START(FSYSCALL), END(FSYSCALL));
214 patch_brl_fsys_bubble_down(START(brl_fsys_bubble_down), END(brl_fsys_bubble_down)); 234 patch_brl_fsys_bubble_down(START(BRL_FSYS_BUBBLE_DOWN), END(BRL_FSYS_BUBBLE_DOWN));
215 ia64_patch_vtop(START(vtop), END(vtop)); 235 ia64_patch_vtop(START(VTOP), END(VTOP));
216 ia64_patch_mckinley_e9(START(mckinley_e9), END(mckinley_e9)); 236 ia64_patch_mckinley_e9(START(MCKINLEY_E9), END(MCKINLEY_E9));
217} 237}
218 238
219void ia64_patch_phys_stack_reg(unsigned long val) 239void ia64_patch_phys_stack_reg(unsigned long val)
@@ -229,7 +249,7 @@ void ia64_patch_phys_stack_reg(unsigned long val)
229 while (offp < end) { 249 while (offp < end) {
230 ip = (u64) offp + *offp; 250 ip = (u64) offp + *offp;
231 ia64_patch(ip, mask, imm); 251 ia64_patch(ip, mask, imm);
232 ia64_fc(ip); 252 ia64_fc((void *)ip);
233 ++offp; 253 ++offp;
234 } 254 }
235 ia64_sync_i(); 255 ia64_sync_i();
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index ae9ec3dc76b..833b3ef9277 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -52,6 +52,7 @@
52#include <asm/meminit.h> 52#include <asm/meminit.h>
53#include <asm/page.h> 53#include <asm/page.h>
54#include <asm/paravirt.h> 54#include <asm/paravirt.h>
55#include <asm/paravirt_patch.h>
55#include <asm/patch.h> 56#include <asm/patch.h>
56#include <asm/pgtable.h> 57#include <asm/pgtable.h>
57#include <asm/processor.h> 58#include <asm/processor.h>
@@ -537,6 +538,7 @@ setup_arch (char **cmdline_p)
537 paravirt_arch_setup_early(); 538 paravirt_arch_setup_early();
538 539
539 ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); 540 ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist);
541 paravirt_patch_apply();
540 542
541 *cmdline_p = __va(ia64_boot_param->command_line); 543 *cmdline_p = __va(ia64_boot_param->command_line);
542 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); 544 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index f0ebb342409..c323c7b9c77 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -50,6 +50,15 @@ EXPORT_SYMBOL(last_cli_ip);
50#endif 50#endif
51 51
52#ifdef CONFIG_PARAVIRT 52#ifdef CONFIG_PARAVIRT
53/* We need to define a real function for sched_clock, to override the
54 weak default version */
55unsigned long long sched_clock(void)
56{
57 return paravirt_sched_clock();
58}
59#endif
60
61#ifdef CONFIG_PARAVIRT
53static void 62static void
54paravirt_clocksource_resume(void) 63paravirt_clocksource_resume(void)
55{ 64{
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index 3765efc5f96..4a95e86b9ac 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -169,6 +169,30 @@ SECTIONS
169 __end___mckinley_e9_bundles = .; 169 __end___mckinley_e9_bundles = .;
170 } 170 }
171 171
172#if defined(CONFIG_PARAVIRT)
173 . = ALIGN(16);
174 .paravirt_bundles : AT(ADDR(.paravirt_bundles) - LOAD_OFFSET)
175 {
176 __start_paravirt_bundles = .;
177 *(.paravirt_bundles)
178 __stop_paravirt_bundles = .;
179 }
180 . = ALIGN(16);
181 .paravirt_insts : AT(ADDR(.paravirt_insts) - LOAD_OFFSET)
182 {
183 __start_paravirt_insts = .;
184 *(.paravirt_insts)
185 __stop_paravirt_insts = .;
186 }
187 . = ALIGN(16);
188 .paravirt_branches : AT(ADDR(.paravirt_branches) - LOAD_OFFSET)
189 {
190 __start_paravirt_branches = .;
191 *(.paravirt_branches)
192 __stop_paravirt_branches = .;
193 }
194#endif
195
172#if defined(CONFIG_IA64_GENERIC) 196#if defined(CONFIG_IA64_GENERIC)
173 /* Machine Vector */ 197 /* Machine Vector */
174 . = ALIGN(16); 198 . = ALIGN(16);
@@ -201,6 +225,12 @@ SECTIONS
201 __start_gate_section = .; 225 __start_gate_section = .;
202 *(.data.gate) 226 *(.data.gate)
203 __stop_gate_section = .; 227 __stop_gate_section = .;
228#ifdef CONFIG_XEN
229 . = ALIGN(PAGE_SIZE);
230 __xen_start_gate_section = .;
231 *(.data.gate.xen)
232 __xen_stop_gate_section = .;
233#endif
204 } 234 }
205 . = ALIGN(PAGE_SIZE); /* make sure the gate page doesn't expose 235 . = ALIGN(PAGE_SIZE); /* make sure the gate page doesn't expose
206 * kernel data 236 * kernel data
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index 076b00d1dbf..28af6a731bb 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -70,7 +70,7 @@ static void kvm_flush_icache(unsigned long start, unsigned long len)
70 int l; 70 int l;
71 71
72 for (l = 0; l < (len + 32); l += 32) 72 for (l = 0; l < (len + 32); l += 32)
73 ia64_fc(start + l); 73 ia64_fc((void *)(start + l));
74 74
75 ia64_sync_i(); 75 ia64_sync_i();
76 ia64_srlz_i(); 76 ia64_srlz_i();
diff --git a/arch/ia64/kvm/vcpu.c b/arch/ia64/kvm/vcpu.c
index d4d28050587..a18ee17b919 100644
--- a/arch/ia64/kvm/vcpu.c
+++ b/arch/ia64/kvm/vcpu.c
@@ -386,7 +386,7 @@ void set_rse_reg(struct kvm_pt_regs *regs, unsigned long r1,
386 else 386 else
387 *rnat_addr = (*rnat_addr) & (~nat_mask); 387 *rnat_addr = (*rnat_addr) & (~nat_mask);
388 388
389 ia64_setreg(_IA64_REG_AR_BSPSTORE, bspstore); 389 ia64_setreg(_IA64_REG_AR_BSPSTORE, (unsigned long)bspstore);
390 ia64_setreg(_IA64_REG_AR_RNAT, rnat); 390 ia64_setreg(_IA64_REG_AR_RNAT, rnat);
391 } 391 }
392 local_irq_restore(psr); 392 local_irq_restore(psr);
diff --git a/arch/ia64/kvm/vtlb.c b/arch/ia64/kvm/vtlb.c
index 38232b37668..2c2501f1315 100644
--- a/arch/ia64/kvm/vtlb.c
+++ b/arch/ia64/kvm/vtlb.c
@@ -210,6 +210,7 @@ void thash_vhpt_insert(struct kvm_vcpu *v, u64 pte, u64 itir, u64 va, int type)
210 phy_pte &= ~PAGE_FLAGS_RV_MASK; 210 phy_pte &= ~PAGE_FLAGS_RV_MASK;
211 psr = ia64_clear_ic(); 211 psr = ia64_clear_ic();
212 ia64_itc(type, va, phy_pte, itir_ps(itir)); 212 ia64_itc(type, va, phy_pte, itir_ps(itir));
213 paravirt_dv_serialize_data();
213 ia64_set_psr(psr); 214 ia64_set_psr(psr);
214 } 215 }
215 216
@@ -456,6 +457,7 @@ void thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
456 phy_pte &= ~PAGE_FLAGS_RV_MASK; 457 phy_pte &= ~PAGE_FLAGS_RV_MASK;
457 psr = ia64_clear_ic(); 458 psr = ia64_clear_ic();
458 ia64_itc(type, ifa, phy_pte, ps); 459 ia64_itc(type, ifa, phy_pte, ps);
460 paravirt_dv_serialize_data();
459 ia64_set_psr(psr); 461 ia64_set_psr(psr);
460 } 462 }
461 if (!(pte&VTLB_PTE_IO)) 463 if (!(pte&VTLB_PTE_IO))
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 56e12903973..8503d534794 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -35,6 +35,7 @@
35#include <asm/uaccess.h> 35#include <asm/uaccess.h>
36#include <asm/unistd.h> 36#include <asm/unistd.h>
37#include <asm/mca.h> 37#include <asm/mca.h>
38#include <asm/paravirt.h>
38 39
39DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); 40DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
40 41
@@ -259,6 +260,7 @@ put_kernel_page (struct page *page, unsigned long address, pgprot_t pgprot)
259static void __init 260static void __init
260setup_gate (void) 261setup_gate (void)
261{ 262{
263 void *gate_section;
262 struct page *page; 264 struct page *page;
263 265
264 /* 266 /*
@@ -266,10 +268,11 @@ setup_gate (void)
266 * headers etc. and once execute-only page to enable 268 * headers etc. and once execute-only page to enable
267 * privilege-promotion via "epc": 269 * privilege-promotion via "epc":
268 */ 270 */
269 page = virt_to_page(ia64_imva(__start_gate_section)); 271 gate_section = paravirt_get_gate_section();
272 page = virt_to_page(ia64_imva(gate_section));
270 put_kernel_page(page, GATE_ADDR, PAGE_READONLY); 273 put_kernel_page(page, GATE_ADDR, PAGE_READONLY);
271#ifdef HAVE_BUGGY_SEGREL 274#ifdef HAVE_BUGGY_SEGREL
272 page = virt_to_page(ia64_imva(__start_gate_section + PAGE_SIZE)); 275 page = virt_to_page(ia64_imva(gate_section + PAGE_SIZE));
273 put_kernel_page(page, GATE_ADDR + PAGE_SIZE, PAGE_GATE); 276 put_kernel_page(page, GATE_ADDR + PAGE_SIZE, PAGE_GATE);
274#else 277#else
275 put_kernel_page(page, GATE_ADDR + PERCPU_PAGE_SIZE, PAGE_GATE); 278 put_kernel_page(page, GATE_ADDR + PERCPU_PAGE_SIZE, PAGE_GATE);
@@ -667,8 +670,8 @@ mem_init (void)
667 * code can tell them apart. 670 * code can tell them apart.
668 */ 671 */
669 for (i = 0; i < NR_syscalls; ++i) { 672 for (i = 0; i < NR_syscalls; ++i) {
670 extern unsigned long fsyscall_table[NR_syscalls];
671 extern unsigned long sys_call_table[NR_syscalls]; 673 extern unsigned long sys_call_table[NR_syscalls];
674 unsigned long *fsyscall_table = paravirt_get_fsyscall_table();
672 675
673 if (!fsyscall_table[i] || nolwsys) 676 if (!fsyscall_table[i] || nolwsys)
674 fsyscall_table[i] = sys_call_table[i] | 1; 677 fsyscall_table[i] = sys_call_table[i] | 1;
diff --git a/arch/ia64/scripts/pvcheck.sed b/arch/ia64/scripts/pvcheck.sed
index ba66ac2e4c6..e59809a3fc0 100644
--- a/arch/ia64/scripts/pvcheck.sed
+++ b/arch/ia64/scripts/pvcheck.sed
@@ -17,6 +17,7 @@ s/mov.*=.*cr\.iip/.warning \"cr.iip should not used directly\"/g
17s/mov.*=.*cr\.ivr/.warning \"cr.ivr should not used directly\"/g 17s/mov.*=.*cr\.ivr/.warning \"cr.ivr should not used directly\"/g
18s/mov.*=[^\.]*psr/.warning \"psr should not used directly\"/g # avoid ar.fpsr 18s/mov.*=[^\.]*psr/.warning \"psr should not used directly\"/g # avoid ar.fpsr
19s/mov.*=.*ar\.eflags/.warning \"ar.eflags should not used directly\"/g 19s/mov.*=.*ar\.eflags/.warning \"ar.eflags should not used directly\"/g
20s/mov.*=.*ar\.itc.*/.warning \"ar.itc should not used directly\"/g
20s/mov.*cr\.ifa.*=.*/.warning \"cr.ifa should not used directly\"/g 21s/mov.*cr\.ifa.*=.*/.warning \"cr.ifa should not used directly\"/g
21s/mov.*cr\.itir.*=.*/.warning \"cr.itir should not used directly\"/g 22s/mov.*cr\.itir.*=.*/.warning \"cr.itir should not used directly\"/g
22s/mov.*cr\.iha.*=.*/.warning \"cr.iha should not used directly\"/g 23s/mov.*cr\.iha.*=.*/.warning \"cr.iha should not used directly\"/g
diff --git a/arch/ia64/xen/Makefile b/arch/ia64/xen/Makefile
index 0ad0224693d..e6f4a0a7422 100644
--- a/arch/ia64/xen/Makefile
+++ b/arch/ia64/xen/Makefile
@@ -3,14 +3,29 @@
3# 3#
4 4
5obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \ 5obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
6 hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o 6 hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o \
7 gate-data.o
7 8
8obj-$(CONFIG_IA64_GENERIC) += machvec.o 9obj-$(CONFIG_IA64_GENERIC) += machvec.o
9 10
11# The gate DSO image is built using a special linker script.
12include $(srctree)/arch/ia64/kernel/Makefile.gate
13
14# tell compiled for xen
15CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_XEN
16AFLAGS_gate.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN -D__IA64_GATE_PARAVIRTUALIZED_XEN
17
18# use same file of native.
19$(obj)/gate.o: $(src)/../kernel/gate.S FORCE
20 $(call if_changed_dep,as_o_S)
21$(obj)/gate.lds: $(src)/../kernel/gate.lds.S FORCE
22 $(call if_changed_dep,cpp_lds_S)
23
24
10AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN 25AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
11 26
12# xen multi compile 27# xen multi compile
13ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S 28ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S fsys.S
14ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o)) 29ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
15obj-y += $(ASM_PARAVIRT_OBJS) 30obj-y += $(ASM_PARAVIRT_OBJS)
16define paravirtualized_xen 31define paravirtualized_xen
diff --git a/arch/ia64/xen/gate-data.S b/arch/ia64/xen/gate-data.S
new file mode 100644
index 00000000000..7d4830afc91
--- /dev/null
+++ b/arch/ia64/xen/gate-data.S
@@ -0,0 +1,3 @@
1 .section .data.gate.xen, "aw"
2
3 .incbin "arch/ia64/xen/gate.so"
diff --git a/arch/ia64/xen/hypercall.S b/arch/ia64/xen/hypercall.S
index 45e02bb64a9..e32dae444dd 100644
--- a/arch/ia64/xen/hypercall.S
+++ b/arch/ia64/xen/hypercall.S
@@ -9,6 +9,7 @@
9#include <asm/intrinsics.h> 9#include <asm/intrinsics.h>
10#include <asm/xen/privop.h> 10#include <asm/xen/privop.h>
11 11
12#ifdef __INTEL_COMPILER
12/* 13/*
13 * Hypercalls without parameter. 14 * Hypercalls without parameter.
14 */ 15 */
@@ -72,6 +73,7 @@ GLOBAL_ENTRY(xen_set_rr0_to_rr4)
72 br.ret.sptk.many rp 73 br.ret.sptk.many rp
73 ;; 74 ;;
74END(xen_set_rr0_to_rr4) 75END(xen_set_rr0_to_rr4)
76#endif
75 77
76GLOBAL_ENTRY(xen_send_ipi) 78GLOBAL_ENTRY(xen_send_ipi)
77 mov r14=r32 79 mov r14=r32
diff --git a/arch/ia64/xen/time.c b/arch/ia64/xen/time.c
index 68d6204c3f1..fb833269017 100644
--- a/arch/ia64/xen/time.c
+++ b/arch/ia64/xen/time.c
@@ -175,10 +175,58 @@ static void xen_itc_jitter_data_reset(void)
175 } while (unlikely(ret != lcycle)); 175 } while (unlikely(ret != lcycle));
176} 176}
177 177
178/* based on xen_sched_clock() in arch/x86/xen/time.c. */
179/*
180 * This relies on HAVE_UNSTABLE_SCHED_CLOCK. If it can't be defined,
181 * something similar logic should be implemented here.
182 */
183/*
184 * Xen sched_clock implementation. Returns the number of unstolen
185 * nanoseconds, which is nanoseconds the VCPU spent in RUNNING+BLOCKED
186 * states.
187 */
188static unsigned long long xen_sched_clock(void)
189{
190 struct vcpu_runstate_info runstate;
191
192 unsigned long long now;
193 unsigned long long offset;
194 unsigned long long ret;
195
196 /*
197 * Ideally sched_clock should be called on a per-cpu basis
198 * anyway, so preempt should already be disabled, but that's
199 * not current practice at the moment.
200 */
201 preempt_disable();
202
203 /*
204 * both ia64_native_sched_clock() and xen's runstate are
205 * based on mAR.ITC. So difference of them makes sense.
206 */
207 now = ia64_native_sched_clock();
208
209 get_runstate_snapshot(&runstate);
210
211 WARN_ON(runstate.state != RUNSTATE_running);
212
213 offset = 0;
214 if (now > runstate.state_entry_time)
215 offset = now - runstate.state_entry_time;
216 ret = runstate.time[RUNSTATE_blocked] +
217 runstate.time[RUNSTATE_running] +
218 offset;
219
220 preempt_enable();
221
222 return ret;
223}
224
178struct pv_time_ops xen_time_ops __initdata = { 225struct pv_time_ops xen_time_ops __initdata = {
179 .init_missing_ticks_accounting = xen_init_missing_ticks_accounting, 226 .init_missing_ticks_accounting = xen_init_missing_ticks_accounting,
180 .do_steal_accounting = xen_do_steal_accounting, 227 .do_steal_accounting = xen_do_steal_accounting,
181 .clocksource_resume = xen_itc_jitter_data_reset, 228 .clocksource_resume = xen_itc_jitter_data_reset,
229 .sched_clock = xen_sched_clock,
182}; 230};
183 231
184/* Called after suspend, to resume time. */ 232/* Called after suspend, to resume time. */
diff --git a/arch/ia64/xen/xen_pv_ops.c b/arch/ia64/xen/xen_pv_ops.c
index 936cff3c96e..5e2270a999f 100644
--- a/arch/ia64/xen/xen_pv_ops.c
+++ b/arch/ia64/xen/xen_pv_ops.c
@@ -24,6 +24,7 @@
24#include <linux/irq.h> 24#include <linux/irq.h>
25#include <linux/kernel.h> 25#include <linux/kernel.h>
26#include <linux/pm.h> 26#include <linux/pm.h>
27#include <linux/unistd.h>
27 28
28#include <asm/xen/hypervisor.h> 29#include <asm/xen/hypervisor.h>
29#include <asm/xen/xencomm.h> 30#include <asm/xen/xencomm.h>
@@ -153,6 +154,13 @@ xen_post_smp_prepare_boot_cpu(void)
153 xen_setup_vcpu_info_placement(); 154 xen_setup_vcpu_info_placement();
154} 155}
155 156
157#ifdef ASM_SUPPORTED
158static unsigned long __init_or_module
159xen_patch_bundle(void *sbundle, void *ebundle, unsigned long type);
160#endif
161static void __init
162xen_patch_branch(unsigned long tag, unsigned long type);
163
156static const struct pv_init_ops xen_init_ops __initconst = { 164static const struct pv_init_ops xen_init_ops __initconst = {
157 .banner = xen_banner, 165 .banner = xen_banner,
158 166
@@ -163,6 +171,53 @@ static const struct pv_init_ops xen_init_ops __initconst = {
163 .arch_setup_nomca = xen_arch_setup_nomca, 171 .arch_setup_nomca = xen_arch_setup_nomca,
164 172
165 .post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu, 173 .post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu,
174#ifdef ASM_SUPPORTED
175 .patch_bundle = xen_patch_bundle,
176#endif
177 .patch_branch = xen_patch_branch,
178};
179
180/***************************************************************************
181 * pv_fsys_data
182 * addresses for fsys
183 */
184
185extern unsigned long xen_fsyscall_table[NR_syscalls];
186extern char xen_fsys_bubble_down[];
187struct pv_fsys_data xen_fsys_data __initdata = {
188 .fsyscall_table = (unsigned long *)xen_fsyscall_table,
189 .fsys_bubble_down = (void *)xen_fsys_bubble_down,
190};
191
192/***************************************************************************
193 * pv_patchdata
194 * patchdata addresses
195 */
196
197#define DECLARE(name) \
198 extern unsigned long __xen_start_gate_##name##_patchlist[]; \
199 extern unsigned long __xen_end_gate_##name##_patchlist[]
200
201DECLARE(fsyscall);
202DECLARE(brl_fsys_bubble_down);
203DECLARE(vtop);
204DECLARE(mckinley_e9);
205
206extern unsigned long __xen_start_gate_section[];
207
208#define ASSIGN(name) \
209 .start_##name##_patchlist = \
210 (unsigned long)__xen_start_gate_##name##_patchlist, \
211 .end_##name##_patchlist = \
212 (unsigned long)__xen_end_gate_##name##_patchlist
213
214static struct pv_patchdata xen_patchdata __initdata = {
215 ASSIGN(fsyscall),
216 ASSIGN(brl_fsys_bubble_down),
217 ASSIGN(vtop),
218 ASSIGN(mckinley_e9),
219
220 .gate_section = (void*)__xen_start_gate_section,
166}; 221};
167 222
168/*************************************************************************** 223/***************************************************************************
@@ -170,6 +225,76 @@ static const struct pv_init_ops xen_init_ops __initconst = {
170 * intrinsics hooks. 225 * intrinsics hooks.
171 */ 226 */
172 227
228#ifndef ASM_SUPPORTED
229static void
230xen_set_itm_with_offset(unsigned long val)
231{
232 /* ia64_cpu_local_tick() calls this with interrupt enabled. */
233 /* WARN_ON(!irqs_disabled()); */
234 xen_set_itm(val - XEN_MAPPEDREGS->itc_offset);
235}
236
237static unsigned long
238xen_get_itm_with_offset(void)
239{
240 /* unused at this moment */
241 printk(KERN_DEBUG "%s is called.\n", __func__);
242
243 WARN_ON(!irqs_disabled());
244 return ia64_native_getreg(_IA64_REG_CR_ITM) +
245 XEN_MAPPEDREGS->itc_offset;
246}
247
248/* ia64_set_itc() is only called by
249 * cpu_init() with ia64_set_itc(0) and ia64_sync_itc().
250 * So XEN_MAPPEDRESG->itc_offset cal be considered as almost constant.
251 */
252static void
253xen_set_itc(unsigned long val)
254{
255 unsigned long mitc;
256
257 WARN_ON(!irqs_disabled());
258 mitc = ia64_native_getreg(_IA64_REG_AR_ITC);
259 XEN_MAPPEDREGS->itc_offset = val - mitc;
260 XEN_MAPPEDREGS->itc_last = val;
261}
262
263static unsigned long
264xen_get_itc(void)
265{
266 unsigned long res;
267 unsigned long itc_offset;
268 unsigned long itc_last;
269 unsigned long ret_itc_last;
270
271 itc_offset = XEN_MAPPEDREGS->itc_offset;
272 do {
273 itc_last = XEN_MAPPEDREGS->itc_last;
274 res = ia64_native_getreg(_IA64_REG_AR_ITC);
275 res += itc_offset;
276 if (itc_last >= res)
277 res = itc_last + 1;
278 ret_itc_last = cmpxchg(&XEN_MAPPEDREGS->itc_last,
279 itc_last, res);
280 } while (unlikely(ret_itc_last != itc_last));
281 return res;
282
283#if 0
284 /* ia64_itc_udelay() calls ia64_get_itc() with interrupt enabled.
285 Should it be paravirtualized instead? */
286 WARN_ON(!irqs_disabled());
287 itc_offset = XEN_MAPPEDREGS->itc_offset;
288 itc_last = XEN_MAPPEDREGS->itc_last;
289 res = ia64_native_getreg(_IA64_REG_AR_ITC);
290 res += itc_offset;
291 if (itc_last >= res)
292 res = itc_last + 1;
293 XEN_MAPPEDREGS->itc_last = res;
294 return res;
295#endif
296}
297
173static void xen_setreg(int regnum, unsigned long val) 298static void xen_setreg(int regnum, unsigned long val)
174{ 299{
175 switch (regnum) { 300 switch (regnum) {
@@ -181,11 +306,14 @@ static void xen_setreg(int regnum, unsigned long val)
181 xen_set_eflag(val); 306 xen_set_eflag(val);
182 break; 307 break;
183#endif 308#endif
309 case _IA64_REG_AR_ITC:
310 xen_set_itc(val);
311 break;
184 case _IA64_REG_CR_TPR: 312 case _IA64_REG_CR_TPR:
185 xen_set_tpr(val); 313 xen_set_tpr(val);
186 break; 314 break;
187 case _IA64_REG_CR_ITM: 315 case _IA64_REG_CR_ITM:
188 xen_set_itm(val); 316 xen_set_itm_with_offset(val);
189 break; 317 break;
190 case _IA64_REG_CR_EOI: 318 case _IA64_REG_CR_EOI:
191 xen_eoi(val); 319 xen_eoi(val);
@@ -209,6 +337,12 @@ static unsigned long xen_getreg(int regnum)
209 res = xen_get_eflag(); 337 res = xen_get_eflag();
210 break; 338 break;
211#endif 339#endif
340 case _IA64_REG_AR_ITC:
341 res = xen_get_itc();
342 break;
343 case _IA64_REG_CR_ITM:
344 res = xen_get_itm_with_offset();
345 break;
212 case _IA64_REG_CR_IVR: 346 case _IA64_REG_CR_IVR:
213 res = xen_get_ivr(); 347 res = xen_get_ivr();
214 break; 348 break;
@@ -259,8 +393,417 @@ xen_intrin_local_irq_restore(unsigned long mask)
259 else 393 else
260 xen_rsm_i(); 394 xen_rsm_i();
261} 395}
396#else
397#define __DEFINE_FUNC(name, code) \
398 extern const char xen_ ## name ## _direct_start[]; \
399 extern const char xen_ ## name ## _direct_end[]; \
400 asm (".align 32\n" \
401 ".proc xen_" #name "\n" \
402 "xen_" #name ":\n" \
403 "xen_" #name "_direct_start:\n" \
404 code \
405 "xen_" #name "_direct_end:\n" \
406 "br.cond.sptk.many b6\n" \
407 ".endp xen_" #name "\n")
408
409#define DEFINE_VOID_FUNC0(name, code) \
410 extern void \
411 xen_ ## name (void); \
412 __DEFINE_FUNC(name, code)
413
414#define DEFINE_VOID_FUNC1(name, code) \
415 extern void \
416 xen_ ## name (unsigned long arg); \
417 __DEFINE_FUNC(name, code)
418
419#define DEFINE_VOID_FUNC1_VOID(name, code) \
420 extern void \
421 xen_ ## name (void *arg); \
422 __DEFINE_FUNC(name, code)
423
424#define DEFINE_VOID_FUNC2(name, code) \
425 extern void \
426 xen_ ## name (unsigned long arg0, \
427 unsigned long arg1); \
428 __DEFINE_FUNC(name, code)
262 429
263static const struct pv_cpu_ops xen_cpu_ops __initdata = { 430#define DEFINE_FUNC0(name, code) \
431 extern unsigned long \
432 xen_ ## name (void); \
433 __DEFINE_FUNC(name, code)
434
435#define DEFINE_FUNC1(name, type, code) \
436 extern unsigned long \
437 xen_ ## name (type arg); \
438 __DEFINE_FUNC(name, code)
439
440#define XEN_PSR_I_ADDR_ADDR (XSI_BASE + XSI_PSR_I_ADDR_OFS)
441
442/*
443 * static void xen_set_itm_with_offset(unsigned long val)
444 * xen_set_itm(val - XEN_MAPPEDREGS->itc_offset);
445 */
446/* 2 bundles */
447DEFINE_VOID_FUNC1(set_itm_with_offset,
448 "mov r2 = " __stringify(XSI_BASE) " + "
449 __stringify(XSI_ITC_OFFSET_OFS) "\n"
450 ";;\n"
451 "ld8 r3 = [r2]\n"
452 ";;\n"
453 "sub r8 = r8, r3\n"
454 "break " __stringify(HYPERPRIVOP_SET_ITM) "\n");
455
456/*
457 * static unsigned long xen_get_itm_with_offset(void)
458 * return ia64_native_getreg(_IA64_REG_CR_ITM) + XEN_MAPPEDREGS->itc_offset;
459 */
460/* 2 bundles */
461DEFINE_FUNC0(get_itm_with_offset,
462 "mov r2 = " __stringify(XSI_BASE) " + "
463 __stringify(XSI_ITC_OFFSET_OFS) "\n"
464 ";;\n"
465 "ld8 r3 = [r2]\n"
466 "mov r8 = cr.itm\n"
467 ";;\n"
468 "add r8 = r8, r2\n");
469
470/*
471 * static void xen_set_itc(unsigned long val)
472 * unsigned long mitc;
473 *
474 * WARN_ON(!irqs_disabled());
475 * mitc = ia64_native_getreg(_IA64_REG_AR_ITC);
476 * XEN_MAPPEDREGS->itc_offset = val - mitc;
477 * XEN_MAPPEDREGS->itc_last = val;
478 */
479/* 2 bundles */
480DEFINE_VOID_FUNC1(set_itc,
481 "mov r2 = " __stringify(XSI_BASE) " + "
482 __stringify(XSI_ITC_LAST_OFS) "\n"
483 "mov r3 = ar.itc\n"
484 ";;\n"
485 "sub r3 = r8, r3\n"
486 "st8 [r2] = r8, "
487 __stringify(XSI_ITC_LAST_OFS) " - "
488 __stringify(XSI_ITC_OFFSET_OFS) "\n"
489 ";;\n"
490 "st8 [r2] = r3\n");
491
492/*
493 * static unsigned long xen_get_itc(void)
494 * unsigned long res;
495 * unsigned long itc_offset;
496 * unsigned long itc_last;
497 * unsigned long ret_itc_last;
498 *
499 * itc_offset = XEN_MAPPEDREGS->itc_offset;
500 * do {
501 * itc_last = XEN_MAPPEDREGS->itc_last;
502 * res = ia64_native_getreg(_IA64_REG_AR_ITC);
503 * res += itc_offset;
504 * if (itc_last >= res)
505 * res = itc_last + 1;
506 * ret_itc_last = cmpxchg(&XEN_MAPPEDREGS->itc_last,
507 * itc_last, res);
508 * } while (unlikely(ret_itc_last != itc_last));
509 * return res;
510 */
511/* 5 bundles */
512DEFINE_FUNC0(get_itc,
513 "mov r2 = " __stringify(XSI_BASE) " + "
514 __stringify(XSI_ITC_OFFSET_OFS) "\n"
515 ";;\n"
516 "ld8 r9 = [r2], " __stringify(XSI_ITC_LAST_OFS) " - "
517 __stringify(XSI_ITC_OFFSET_OFS) "\n"
518 /* r9 = itc_offset */
519 /* r2 = XSI_ITC_OFFSET */
520 "888:\n"
521 "mov r8 = ar.itc\n" /* res = ar.itc */
522 ";;\n"
523 "ld8 r3 = [r2]\n" /* r3 = itc_last */
524 "add r8 = r8, r9\n" /* res = ar.itc + itc_offset */
525 ";;\n"
526 "cmp.gtu p6, p0 = r3, r8\n"
527 ";;\n"
528 "(p6) add r8 = 1, r3\n" /* if (itc_last > res) itc_last + 1 */
529 ";;\n"
530 "mov ar.ccv = r8\n"
531 ";;\n"
532 "cmpxchg8.acq r10 = [r2], r8, ar.ccv\n"
533 ";;\n"
534 "cmp.ne p6, p0 = r10, r3\n"
535 "(p6) hint @pause\n"
536 "(p6) br.cond.spnt 888b\n");
537
538DEFINE_VOID_FUNC1_VOID(fc,
539 "break " __stringify(HYPERPRIVOP_FC) "\n");
540
541/*
542 * psr_i_addr_addr = XEN_PSR_I_ADDR_ADDR
543 * masked_addr = *psr_i_addr_addr
544 * pending_intr_addr = masked_addr - 1
545 * if (val & IA64_PSR_I) {
546 * masked = *masked_addr
547 * *masked_addr = 0:xen_set_virtual_psr_i(1)
548 * compiler barrier
549 * if (masked) {
550 * uint8_t pending = *pending_intr_addr;
551 * if (pending)
552 * XEN_HYPER_SSM_I
553 * }
554 * } else {
555 * *masked_addr = 1:xen_set_virtual_psr_i(0)
556 * }
557 */
558/* 6 bundles */
559DEFINE_VOID_FUNC1(intrin_local_irq_restore,
560 /* r8 = input value: 0 or IA64_PSR_I
561 * p6 = (flags & IA64_PSR_I)
562 * = if clause
563 * p7 = !(flags & IA64_PSR_I)
564 * = else clause
565 */
566 "cmp.ne p6, p7 = r8, r0\n"
567 "mov r9 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
568 ";;\n"
569 /* r9 = XEN_PSR_I_ADDR */
570 "ld8 r9 = [r9]\n"
571 ";;\n"
572
573 /* r10 = masked previous value */
574 "(p6) ld1.acq r10 = [r9]\n"
575 ";;\n"
576
577 /* p8 = !masked interrupt masked previously? */
578 "(p6) cmp.ne.unc p8, p0 = r10, r0\n"
579
580 /* p7 = else clause */
581 "(p7) mov r11 = 1\n"
582 ";;\n"
583 /* masked = 1 */
584 "(p7) st1.rel [r9] = r11\n"
585
586 /* p6 = if clause */
587 /* masked = 0
588 * r9 = masked_addr - 1
589 * = pending_intr_addr
590 */
591 "(p8) st1.rel [r9] = r0, -1\n"
592 ";;\n"
593 /* r8 = pending_intr */
594 "(p8) ld1.acq r11 = [r9]\n"
595 ";;\n"
596 /* p9 = interrupt pending? */
597 "(p8) cmp.ne.unc p9, p10 = r11, r0\n"
598 ";;\n"
599 "(p10) mf\n"
600 /* issue hypercall to trigger interrupt */
601 "(p9) break " __stringify(HYPERPRIVOP_SSM_I) "\n");
602
603DEFINE_VOID_FUNC2(ptcga,
604 "break " __stringify(HYPERPRIVOP_PTC_GA) "\n");
605DEFINE_VOID_FUNC2(set_rr,
606 "break " __stringify(HYPERPRIVOP_SET_RR) "\n");
607
608/*
609 * tmp = XEN_MAPPEDREGS->interrupt_mask_addr = XEN_PSR_I_ADDR_ADDR;
610 * tmp = *tmp
611 * tmp = *tmp;
612 * psr_i = tmp? 0: IA64_PSR_I;
613 */
614/* 4 bundles */
615DEFINE_FUNC0(get_psr_i,
616 "mov r9 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
617 ";;\n"
618 "ld8 r9 = [r9]\n" /* r9 = XEN_PSR_I_ADDR */
619 "mov r8 = 0\n" /* psr_i = 0 */
620 ";;\n"
621 "ld1.acq r9 = [r9]\n" /* r9 = XEN_PSR_I */
622 ";;\n"
623 "cmp.eq.unc p6, p0 = r9, r0\n" /* p6 = (XEN_PSR_I != 0) */
624 ";;\n"
625 "(p6) mov r8 = " __stringify(1 << IA64_PSR_I_BIT) "\n");
626
627DEFINE_FUNC1(thash, unsigned long,
628 "break " __stringify(HYPERPRIVOP_THASH) "\n");
629DEFINE_FUNC1(get_cpuid, int,
630 "break " __stringify(HYPERPRIVOP_GET_CPUID) "\n");
631DEFINE_FUNC1(get_pmd, int,
632 "break " __stringify(HYPERPRIVOP_GET_PMD) "\n");
633DEFINE_FUNC1(get_rr, unsigned long,
634 "break " __stringify(HYPERPRIVOP_GET_RR) "\n");
635
636/*
637 * void xen_privop_ssm_i(void)
638 *
639 * int masked = !xen_get_virtual_psr_i();
640 * // masked = *(*XEN_MAPPEDREGS->interrupt_mask_addr)
641 * xen_set_virtual_psr_i(1)
642 * // *(*XEN_MAPPEDREGS->interrupt_mask_addr) = 0
643 * // compiler barrier
644 * if (masked) {
645 * uint8_t* pend_int_addr =
646 * (uint8_t*)(*XEN_MAPPEDREGS->interrupt_mask_addr) - 1;
647 * uint8_t pending = *pend_int_addr;
648 * if (pending)
649 * XEN_HYPER_SSM_I
650 * }
651 */
652/* 4 bundles */
653DEFINE_VOID_FUNC0(ssm_i,
654 "mov r8 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
655 ";;\n"
656 "ld8 r8 = [r8]\n" /* r8 = XEN_PSR_I_ADDR */
657 ";;\n"
658 "ld1.acq r9 = [r8]\n" /* r9 = XEN_PSR_I */
659 ";;\n"
660 "st1.rel [r8] = r0, -1\n" /* psr_i = 0. enable interrupt
661 * r8 = XEN_PSR_I_ADDR - 1
662 * = pend_int_addr
663 */
664 "cmp.eq.unc p0, p6 = r9, r0\n"/* p6 = !XEN_PSR_I
665 * previously interrupt
666 * masked?
667 */
668 ";;\n"
669 "(p6) ld1.acq r8 = [r8]\n" /* r8 = xen_pend_int */
670 ";;\n"
671 "(p6) cmp.eq.unc p6, p7 = r8, r0\n" /*interrupt pending?*/
672 ";;\n"
673 /* issue hypercall to get interrupt */
674 "(p7) break " __stringify(HYPERPRIVOP_SSM_I) "\n"
675 ";;\n");
676
677/*
678 * psr_i_addr_addr = XEN_MAPPEDREGS->interrupt_mask_addr
679 * = XEN_PSR_I_ADDR_ADDR;
680 * psr_i_addr = *psr_i_addr_addr;
681 * *psr_i_addr = 1;
682 */
683/* 2 bundles */
684DEFINE_VOID_FUNC0(rsm_i,
685 "mov r8 = " __stringify(XEN_PSR_I_ADDR_ADDR) "\n"
686 /* r8 = XEN_PSR_I_ADDR */
687 "mov r9 = 1\n"
688 ";;\n"
689 "ld8 r8 = [r8]\n" /* r8 = XEN_PSR_I */
690 ";;\n"
691 "st1.rel [r8] = r9\n"); /* XEN_PSR_I = 1 */
692
693extern void
694xen_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
695 unsigned long val2, unsigned long val3,
696 unsigned long val4);
697__DEFINE_FUNC(set_rr0_to_rr4,
698 "break " __stringify(HYPERPRIVOP_SET_RR0_TO_RR4) "\n");
699
700
701extern unsigned long xen_getreg(int regnum);
702#define __DEFINE_GET_REG(id, privop) \
703 "mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
704 ";;\n" \
705 "cmp.eq p6, p0 = r2, r8\n" \
706 ";;\n" \
707 "(p6) break " __stringify(HYPERPRIVOP_GET_ ## privop) "\n" \
708 "(p6) br.cond.sptk.many b6\n" \
709 ";;\n"
710
711__DEFINE_FUNC(getreg,
712 __DEFINE_GET_REG(PSR, PSR)
713#ifdef CONFIG_IA32_SUPPORT
714 __DEFINE_GET_REG(AR_EFLAG, EFLAG)
715#endif
716
717 /* get_itc */
718 "mov r2 = " __stringify(_IA64_REG_AR_ITC) "\n"
719 ";;\n"
720 "cmp.eq p6, p0 = r2, r8\n"
721 ";;\n"
722 "(p6) br.cond.spnt xen_get_itc\n"
723 ";;\n"
724
725 /* get itm */
726 "mov r2 = " __stringify(_IA64_REG_CR_ITM) "\n"
727 ";;\n"
728 "cmp.eq p6, p0 = r2, r8\n"
729 ";;\n"
730 "(p6) br.cond.spnt xen_get_itm_with_offset\n"
731 ";;\n"
732
733 __DEFINE_GET_REG(CR_IVR, IVR)
734 __DEFINE_GET_REG(CR_TPR, TPR)
735
736 /* fall back */
737 "movl r2 = ia64_native_getreg_func\n"
738 ";;\n"
739 "mov b7 = r2\n"
740 ";;\n"
741 "br.cond.sptk.many b7\n");
742
743extern void xen_setreg(int regnum, unsigned long val);
744#define __DEFINE_SET_REG(id, privop) \
745 "mov r2 = " __stringify(_IA64_REG_ ## id) "\n" \
746 ";;\n" \
747 "cmp.eq p6, p0 = r2, r9\n" \
748 ";;\n" \
749 "(p6) break " __stringify(HYPERPRIVOP_ ## privop) "\n" \
750 "(p6) br.cond.sptk.many b6\n" \
751 ";;\n"
752
753__DEFINE_FUNC(setreg,
754 /* kr0 .. kr 7*/
755 /*
756 * if (_IA64_REG_AR_KR0 <= regnum &&
757 * regnum <= _IA64_REG_AR_KR7) {
758 * register __index asm ("r8") = regnum - _IA64_REG_AR_KR0
759 * register __val asm ("r9") = val
760 * "break HYPERPRIVOP_SET_KR"
761 * }
762 */
763 "mov r17 = r9\n"
764 "mov r2 = " __stringify(_IA64_REG_AR_KR0) "\n"
765 ";;\n"
766 "cmp.ge p6, p0 = r9, r2\n"
767 "sub r17 = r17, r2\n"
768 ";;\n"
769 "(p6) cmp.ge.unc p7, p0 = "
770 __stringify(_IA64_REG_AR_KR7) " - " __stringify(_IA64_REG_AR_KR0)
771 ", r17\n"
772 ";;\n"
773 "(p7) mov r9 = r8\n"
774 ";;\n"
775 "(p7) mov r8 = r17\n"
776 "(p7) break " __stringify(HYPERPRIVOP_SET_KR) "\n"
777
778 /* set itm */
779 "mov r2 = " __stringify(_IA64_REG_CR_ITM) "\n"
780 ";;\n"
781 "cmp.eq p6, p0 = r2, r8\n"
782 ";;\n"
783 "(p6) br.cond.spnt xen_set_itm_with_offset\n"
784
785 /* set itc */
786 "mov r2 = " __stringify(_IA64_REG_AR_ITC) "\n"
787 ";;\n"
788 "cmp.eq p6, p0 = r2, r8\n"
789 ";;\n"
790 "(p6) br.cond.spnt xen_set_itc\n"
791
792#ifdef CONFIG_IA32_SUPPORT
793 __DEFINE_SET_REG(AR_EFLAG, SET_EFLAG)
794#endif
795 __DEFINE_SET_REG(CR_TPR, SET_TPR)
796 __DEFINE_SET_REG(CR_EOI, EOI)
797
798 /* fall back */
799 "movl r2 = ia64_native_setreg_func\n"
800 ";;\n"
801 "mov b7 = r2\n"
802 ";;\n"
803 "br.cond.sptk.many b7\n");
804#endif
805
806static const struct pv_cpu_ops xen_cpu_ops __initconst = {
264 .fc = xen_fc, 807 .fc = xen_fc,
265 .thash = xen_thash, 808 .thash = xen_thash,
266 .get_cpuid = xen_get_cpuid, 809 .get_cpuid = xen_get_cpuid,
@@ -337,7 +880,7 @@ xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
337 HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op); 880 HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
338} 881}
339 882
340static const struct pv_iosapic_ops xen_iosapic_ops __initconst = { 883static struct pv_iosapic_ops xen_iosapic_ops __initdata = {
341 .pcat_compat_init = xen_pcat_compat_init, 884 .pcat_compat_init = xen_pcat_compat_init,
342 .__get_irq_chip = xen_iosapic_get_irq_chip, 885 .__get_irq_chip = xen_iosapic_get_irq_chip,
343 886
@@ -355,6 +898,8 @@ xen_setup_pv_ops(void)
355 xen_info_init(); 898 xen_info_init();
356 pv_info = xen_info; 899 pv_info = xen_info;
357 pv_init_ops = xen_init_ops; 900 pv_init_ops = xen_init_ops;
901 pv_fsys_data = xen_fsys_data;
902 pv_patchdata = xen_patchdata;
358 pv_cpu_ops = xen_cpu_ops; 903 pv_cpu_ops = xen_cpu_ops;
359 pv_iosapic_ops = xen_iosapic_ops; 904 pv_iosapic_ops = xen_iosapic_ops;
360 pv_irq_ops = xen_irq_ops; 905 pv_irq_ops = xen_irq_ops;
@@ -362,3 +907,252 @@ xen_setup_pv_ops(void)
362 907
363 paravirt_cpu_asm_init(&xen_cpu_asm_switch); 908 paravirt_cpu_asm_init(&xen_cpu_asm_switch);
364} 909}
910
911#ifdef ASM_SUPPORTED
912/***************************************************************************
913 * binary pacthing
914 * pv_init_ops.patch_bundle
915 */
916
917#define DEFINE_FUNC_GETREG(name, privop) \
918 DEFINE_FUNC0(get_ ## name, \
919 "break "__stringify(HYPERPRIVOP_GET_ ## privop) "\n")
920
921DEFINE_FUNC_GETREG(psr, PSR);
922DEFINE_FUNC_GETREG(eflag, EFLAG);
923DEFINE_FUNC_GETREG(ivr, IVR);
924DEFINE_FUNC_GETREG(tpr, TPR);
925
926#define DEFINE_FUNC_SET_KR(n) \
927 DEFINE_VOID_FUNC0(set_kr ## n, \
928 ";;\n" \
929 "mov r9 = r8\n" \
930 "mov r8 = " #n "\n" \
931 "break " __stringify(HYPERPRIVOP_SET_KR) "\n")
932
933DEFINE_FUNC_SET_KR(0);
934DEFINE_FUNC_SET_KR(1);
935DEFINE_FUNC_SET_KR(2);
936DEFINE_FUNC_SET_KR(3);
937DEFINE_FUNC_SET_KR(4);
938DEFINE_FUNC_SET_KR(5);
939DEFINE_FUNC_SET_KR(6);
940DEFINE_FUNC_SET_KR(7);
941
942#define __DEFINE_FUNC_SETREG(name, privop) \
943 DEFINE_VOID_FUNC0(name, \
944 "break "__stringify(HYPERPRIVOP_ ## privop) "\n")
945
946#define DEFINE_FUNC_SETREG(name, privop) \
947 __DEFINE_FUNC_SETREG(set_ ## name, SET_ ## privop)
948
949DEFINE_FUNC_SETREG(eflag, EFLAG);
950DEFINE_FUNC_SETREG(tpr, TPR);
951__DEFINE_FUNC_SETREG(eoi, EOI);
952
953extern const char xen_check_events[];
954extern const char __xen_intrin_local_irq_restore_direct_start[];
955extern const char __xen_intrin_local_irq_restore_direct_end[];
956extern const unsigned long __xen_intrin_local_irq_restore_direct_reloc;
957
958asm (
959 ".align 32\n"
960 ".proc xen_check_events\n"
961 "xen_check_events:\n"
962 /* masked = 0
963 * r9 = masked_addr - 1
964 * = pending_intr_addr
965 */
966 "st1.rel [r9] = r0, -1\n"
967 ";;\n"
968 /* r8 = pending_intr */
969 "ld1.acq r11 = [r9]\n"
970 ";;\n"
971 /* p9 = interrupt pending? */
972 "cmp.ne p9, p10 = r11, r0\n"
973 ";;\n"
974 "(p10) mf\n"
975 /* issue hypercall to trigger interrupt */
976 "(p9) break " __stringify(HYPERPRIVOP_SSM_I) "\n"
977 "br.cond.sptk.many b6\n"
978 ".endp xen_check_events\n"
979 "\n"
980 ".align 32\n"
981 ".proc __xen_intrin_local_irq_restore_direct\n"
982 "__xen_intrin_local_irq_restore_direct:\n"
983 "__xen_intrin_local_irq_restore_direct_start:\n"
984 "1:\n"
985 "{\n"
986 "cmp.ne p6, p7 = r8, r0\n"
987 "mov r17 = ip\n" /* get ip to calc return address */
988 "mov r9 = "__stringify(XEN_PSR_I_ADDR_ADDR) "\n"
989 ";;\n"
990 "}\n"
991 "{\n"
992 /* r9 = XEN_PSR_I_ADDR */
993 "ld8 r9 = [r9]\n"
994 ";;\n"
995 /* r10 = masked previous value */
996 "(p6) ld1.acq r10 = [r9]\n"
997 "adds r17 = 1f - 1b, r17\n" /* calculate return address */
998 ";;\n"
999 "}\n"
1000 "{\n"
1001 /* p8 = !masked interrupt masked previously? */
1002 "(p6) cmp.ne.unc p8, p0 = r10, r0\n"
1003 "\n"
1004 /* p7 = else clause */
1005 "(p7) mov r11 = 1\n"
1006 ";;\n"
1007 "(p8) mov b6 = r17\n" /* set return address */
1008 "}\n"
1009 "{\n"
1010 /* masked = 1 */
1011 "(p7) st1.rel [r9] = r11\n"
1012 "\n"
1013 "[99:]\n"
1014 "(p8) brl.cond.dptk.few xen_check_events\n"
1015 "}\n"
1016 /* pv calling stub is 5 bundles. fill nop to adjust return address */
1017 "{\n"
1018 "nop 0\n"
1019 "nop 0\n"
1020 "nop 0\n"
1021 "}\n"
1022 "1:\n"
1023 "__xen_intrin_local_irq_restore_direct_end:\n"
1024 ".endp __xen_intrin_local_irq_restore_direct\n"
1025 "\n"
1026 ".align 8\n"
1027 "__xen_intrin_local_irq_restore_direct_reloc:\n"
1028 "data8 99b\n"
1029);
1030
1031static struct paravirt_patch_bundle_elem xen_patch_bundle_elems[]
1032__initdata_or_module =
1033{
1034#define XEN_PATCH_BUNDLE_ELEM(name, type) \
1035 { \
1036 (void*)xen_ ## name ## _direct_start, \
1037 (void*)xen_ ## name ## _direct_end, \
1038 PARAVIRT_PATCH_TYPE_ ## type, \
1039 }
1040
1041 XEN_PATCH_BUNDLE_ELEM(fc, FC),
1042 XEN_PATCH_BUNDLE_ELEM(thash, THASH),
1043 XEN_PATCH_BUNDLE_ELEM(get_cpuid, GET_CPUID),
1044 XEN_PATCH_BUNDLE_ELEM(get_pmd, GET_PMD),
1045 XEN_PATCH_BUNDLE_ELEM(ptcga, PTCGA),
1046 XEN_PATCH_BUNDLE_ELEM(get_rr, GET_RR),
1047 XEN_PATCH_BUNDLE_ELEM(set_rr, SET_RR),
1048 XEN_PATCH_BUNDLE_ELEM(set_rr0_to_rr4, SET_RR0_TO_RR4),
1049 XEN_PATCH_BUNDLE_ELEM(ssm_i, SSM_I),
1050 XEN_PATCH_BUNDLE_ELEM(rsm_i, RSM_I),
1051 XEN_PATCH_BUNDLE_ELEM(get_psr_i, GET_PSR_I),
1052 {
1053 (void*)__xen_intrin_local_irq_restore_direct_start,
1054 (void*)__xen_intrin_local_irq_restore_direct_end,
1055 PARAVIRT_PATCH_TYPE_INTRIN_LOCAL_IRQ_RESTORE,
1056 },
1057
1058#define XEN_PATCH_BUNDLE_ELEM_GETREG(name, reg) \
1059 { \
1060 xen_get_ ## name ## _direct_start, \
1061 xen_get_ ## name ## _direct_end, \
1062 PARAVIRT_PATCH_TYPE_GETREG + _IA64_REG_ ## reg, \
1063 }
1064
1065 XEN_PATCH_BUNDLE_ELEM_GETREG(psr, PSR),
1066 XEN_PATCH_BUNDLE_ELEM_GETREG(eflag, AR_EFLAG),
1067
1068 XEN_PATCH_BUNDLE_ELEM_GETREG(ivr, CR_IVR),
1069 XEN_PATCH_BUNDLE_ELEM_GETREG(tpr, CR_TPR),
1070
1071 XEN_PATCH_BUNDLE_ELEM_GETREG(itc, AR_ITC),
1072 XEN_PATCH_BUNDLE_ELEM_GETREG(itm_with_offset, CR_ITM),
1073
1074
1075#define __XEN_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
1076 { \
1077 xen_ ## name ## _direct_start, \
1078 xen_ ## name ## _direct_end, \
1079 PARAVIRT_PATCH_TYPE_SETREG + _IA64_REG_ ## reg, \
1080 }
1081
1082#define XEN_PATCH_BUNDLE_ELEM_SETREG(name, reg) \
1083 __XEN_PATCH_BUNDLE_ELEM_SETREG(set_ ## name, reg)
1084
1085 XEN_PATCH_BUNDLE_ELEM_SETREG(kr0, AR_KR0),
1086 XEN_PATCH_BUNDLE_ELEM_SETREG(kr1, AR_KR1),
1087 XEN_PATCH_BUNDLE_ELEM_SETREG(kr2, AR_KR2),
1088 XEN_PATCH_BUNDLE_ELEM_SETREG(kr3, AR_KR3),
1089 XEN_PATCH_BUNDLE_ELEM_SETREG(kr4, AR_KR4),
1090 XEN_PATCH_BUNDLE_ELEM_SETREG(kr5, AR_KR5),
1091 XEN_PATCH_BUNDLE_ELEM_SETREG(kr6, AR_KR6),
1092 XEN_PATCH_BUNDLE_ELEM_SETREG(kr7, AR_KR7),
1093
1094 XEN_PATCH_BUNDLE_ELEM_SETREG(eflag, AR_EFLAG),
1095 XEN_PATCH_BUNDLE_ELEM_SETREG(tpr, CR_TPR),
1096 __XEN_PATCH_BUNDLE_ELEM_SETREG(eoi, CR_EOI),
1097
1098 XEN_PATCH_BUNDLE_ELEM_SETREG(itc, AR_ITC),
1099 XEN_PATCH_BUNDLE_ELEM_SETREG(itm_with_offset, CR_ITM),
1100};
1101
1102static unsigned long __init_or_module
1103xen_patch_bundle(void *sbundle, void *ebundle, unsigned long type)
1104{
1105 const unsigned long nelems = sizeof(xen_patch_bundle_elems) /
1106 sizeof(xen_patch_bundle_elems[0]);
1107 unsigned long used;
1108 const struct paravirt_patch_bundle_elem *found;
1109
1110 used = __paravirt_patch_apply_bundle(sbundle, ebundle, type,
1111 xen_patch_bundle_elems, nelems,
1112 &found);
1113
1114 if (found == NULL)
1115 /* fallback */
1116 return ia64_native_patch_bundle(sbundle, ebundle, type);
1117 if (used == 0)
1118 return used;
1119
1120 /* relocation */
1121 switch (type) {
1122 case PARAVIRT_PATCH_TYPE_INTRIN_LOCAL_IRQ_RESTORE: {
1123 unsigned long reloc =
1124 __xen_intrin_local_irq_restore_direct_reloc;
1125 unsigned long reloc_offset = reloc - (unsigned long)
1126 __xen_intrin_local_irq_restore_direct_start;
1127 unsigned long tag = (unsigned long)sbundle + reloc_offset;
1128 paravirt_patch_reloc_brl(tag, xen_check_events);
1129 break;
1130 }
1131 default:
1132 /* nothing */
1133 break;
1134 }
1135 return used;
1136}
1137#endif /* ASM_SUPPOTED */
1138
1139const struct paravirt_patch_branch_target xen_branch_target[]
1140__initconst = {
1141#define PARAVIRT_BR_TARGET(name, type) \
1142 { \
1143 &xen_ ## name, \
1144 PARAVIRT_PATCH_TYPE_BR_ ## type, \
1145 }
1146 PARAVIRT_BR_TARGET(switch_to, SWITCH_TO),
1147 PARAVIRT_BR_TARGET(leave_syscall, LEAVE_SYSCALL),
1148 PARAVIRT_BR_TARGET(work_processed_syscall, WORK_PROCESSED_SYSCALL),
1149 PARAVIRT_BR_TARGET(leave_kernel, LEAVE_KERNEL),
1150};
1151
1152static void __init
1153xen_patch_branch(unsigned long tag, unsigned long type)
1154{
1155 const unsigned long nelem =
1156 sizeof(xen_branch_target) / sizeof(xen_branch_target[0]);
1157 __paravirt_patch_apply_branch(tag, type, xen_branch_target, nelem);
1158}
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-19 04:24:39 -0400