[IA64] pvops: introduce pv_cpu_ops to paravirtualize privileged instructions.

introduce pv_cpu_ops to paravirtualize privleged instructions
which are defined by ia64 intrinsics.
make them indirect C function calls by introducing function
tables, pv_cpu_ops.

Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 53 insertions, 9 deletions

diff --git a/include/asm-ia64/intrinsics.h b/include/asm-ia64/intrinsics.h
index a3b96892f83f..47d686dba1eb 100644
--- a/include/asm-ia64/intrinsics.h
+++ b/include/asm-ia64/intrinsics.h
@@ -18,15 +18,15 @@
 # include <asm/gcc_intrin.h>
 #endif
 
-#define ia64_get_psr_i()        (ia64_getreg(_IA64_REG_PSR) & IA64_PSR_I)
-
-#define ia64_set_rr0_to_rr4(val0, val1, val2, val3, val4)       \
-do {                                                            \
-        ia64_set_rr(0x0000000000000000UL, (val0));              \
-        ia64_set_rr(0x2000000000000000UL, (val1));              \
-        ia64_set_rr(0x4000000000000000UL, (val2));              \
-        ia64_set_rr(0x6000000000000000UL, (val3));              \
-        ia64_set_rr(0x8000000000000000UL, (val4));              \
+#define ia64_native_get_psr_i() (ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I)
+
+#define ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4)        \
+do {                                                                    \
+        ia64_native_set_rr(0x0000000000000000UL, (val0));               \
+        ia64_native_set_rr(0x2000000000000000UL, (val1));               \
+        ia64_native_set_rr(0x4000000000000000UL, (val2));               \
+        ia64_native_set_rr(0x6000000000000000UL, (val3));               \
+        ia64_native_set_rr(0x8000000000000000UL, (val4));               \
 } while (0)
 
 /*
@@ -194,4 +194,48 @@ extern long ia64_cmpxchg_called_with_bad_pointer (void);
 #endif /* !CONFIG_IA64_DEBUG_CMPXCHG */
 
 #endif
+
+#ifdef __KERNEL__
+#include <asm/paravirt_privop.h>
+#endif
+
+#ifndef __ASSEMBLY__
+#if defined(CONFIG_PARAVIRT) && defined(__KERNEL__)
+#define IA64_INTRINSIC_API(name)        pv_cpu_ops.name
+#define IA64_INTRINSIC_MACRO(name)      paravirt_ ## name
+#else
+#define IA64_INTRINSIC_API(name)        ia64_native_ ## name
+#define IA64_INTRINSIC_MACRO(name)      ia64_native_ ## name
+#endif
+
+/************************************************/
+/* Instructions paravirtualized for correctness */
+/************************************************/
+/* fc, thash, get_cpuid, get_pmd, get_eflags, set_eflags */
+/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
+ * is not currently used (though it may be in a long-format VHPT system!)
+ */
+#define ia64_fc                         IA64_INTRINSIC_API(fc)
+#define ia64_thash                      IA64_INTRINSIC_API(thash)
+#define ia64_get_cpuid                  IA64_INTRINSIC_API(get_cpuid)
+#define ia64_get_pmd                    IA64_INTRINSIC_API(get_pmd)
+
+
+/************************************************/
+/* Instructions paravirtualized for performance */
+/************************************************/
+#define ia64_ssm                        IA64_INTRINSIC_MACRO(ssm)
+#define ia64_rsm                        IA64_INTRINSIC_MACRO(rsm)
+#define ia64_getreg                     IA64_INTRINSIC_API(getreg)
+#define ia64_setreg                     IA64_INTRINSIC_API(setreg)
+#define ia64_set_rr                     IA64_INTRINSIC_API(set_rr)
+#define ia64_get_rr                     IA64_INTRINSIC_API(get_rr)
+#define ia64_ptcga                      IA64_INTRINSIC_API(ptcga)
+#define ia64_get_psr_i                  IA64_INTRINSIC_API(get_psr_i)
+#define ia64_intrin_local_irq_restore   \
+        IA64_INTRINSIC_API(intrin_local_irq_restore)
+#define ia64_set_rr0_to_rr4             IA64_INTRINSIC_API(set_rr0_to_rr4)
+
+#endif /* !__ASSEMBLY__ */
+
 #endif /* _ASM_IA64_INTRINSICS_H */