Merge branch 'devel-stable' into devel

Conflicts:
	arch/arm/Kconfig
	arch/arm/include/asm/system.h
	arch/arm/mm/Kconfig

13 files changed, 161 insertions, 91 deletions

diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 00f46d9ce299..6e8f05c8a1c8 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -149,10 +149,10 @@
 
 #define USER(x...)                              \
 9999:   x;                                      \
-        .section __ex_table,"a";                \
+        .pushsection __ex_table,"a";            \
         .align  3;                              \
         .long   9999b,9001f;                    \
-        .previous
+        .popsection
 
 /*
  * SMP data memory barrier
@@ -193,10 +193,10 @@
         .error  "Unsupported inc macro argument"
         .endif
 
-        .section __ex_table,"a"
+        .pushsection __ex_table,"a"
         .align  3
         .long   9999b, \abort
-        .previous
+        .popsection
         .endm
 
         .macro  usracc, instr, reg, ptr, inc, cond, rept, abort
@@ -234,10 +234,10 @@
         .error  "Unsupported inc macro argument"
         .endif
 
-        .section __ex_table,"a"
+        .pushsection __ex_table,"a"
         .align  3
         .long   9999b, \abort
-        .previous
+        .popsection
         .endr
         .endm
 
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 72da7e045c6b..0d08d4170b64 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -15,6 +15,7 @@
 #include <asm/glue.h>
 #include <asm/shmparam.h>
 #include <asm/cachetype.h>
+#include <asm/outercache.h>
 
 #define CACHE_COLOUR(vaddr)     ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
 
@@ -219,12 +220,6 @@ struct cpu_cache_fns {
         void (*dma_flush_range)(const void *, const void *);
 };
 
-struct outer_cache_fns {
-        void (*inv_range)(unsigned long, unsigned long);
-        void (*clean_range)(unsigned long, unsigned long);
-        void (*flush_range)(unsigned long, unsigned long);
-};
-
 /*
  * Select the calling method
  */
@@ -281,37 +276,6 @@ extern void dmac_flush_range(const void *, const void *);
 
 #endif
 
-#ifdef CONFIG_OUTER_CACHE
-
-extern struct outer_cache_fns outer_cache;
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{
-        if (outer_cache.inv_range)
-                outer_cache.inv_range(start, end);
-}
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{
-        if (outer_cache.clean_range)
-                outer_cache.clean_range(start, end);
-}
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{
-        if (outer_cache.flush_range)
-                outer_cache.flush_range(start, end);
-}
-
-#else
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{ }
-
-#endif
-
 /*
  * Copy user data from/to a page which is mapped into a different
  * processes address space.  Really, we want to allow our "user
diff --git a/arch/arm/include/asm/clkdev.h b/arch/arm/include/asm/clkdev.h
index 7a0690da5e63..b56c1389b6fa 100644
--- a/arch/arm/include/asm/clkdev.h
+++ b/arch/arm/include/asm/clkdev.h
@@ -13,6 +13,7 @@
 #define __ASM_CLKDEV_H
 
 struct clk;
+struct device;
 
 struct clk_lookup {
         struct list_head        node;
diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
index bff056489cc1..51662feb9f1d 100644
--- a/arch/arm/include/asm/elf.h
+++ b/arch/arm/include/asm/elf.h
@@ -9,6 +9,8 @@
 #include <asm/ptrace.h>
 #include <asm/user.h>
 
+struct task_struct;
+
 typedef unsigned long elf_greg_t;
 typedef unsigned long elf_freg_t[3];
 
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index bfcc15929a7f..540a044153a5 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -21,14 +21,14 @@
         "2:     strt    %0, [%2]\n"                             \
         "       mov     %0, #0\n"                               \
         "3:\n"                                                  \
-        "       .section __ex_table,\"a\"\n"                    \
+        "       .pushsection __ex_table,\"a\"\n"                \
         "       .align  3\n"                                    \
         "       .long   1b, 4f, 2b, 4f\n"                       \
-        "       .previous\n"                                    \
-        "       .section .fixup,\"ax\"\n"                       \
+        "       .popsection\n"                                  \
+        "       .pushsection .fixup,\"ax\"\n"                   \
         "4:     mov     %0, %4\n"                               \
         "       b       3b\n"                                   \
-        "       .previous"                                      \
+        "       .popsection"                                    \
         : "=&r" (ret), "=&r" (oldval)                           \
         : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT)              \
         : "cc", "memory")
@@ -102,14 +102,14 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
         "       it      eq      @ explicit IT needed for the 2b label\n"
         "2:     streqt  %2, [%3]\n"
         "3:\n"
-        "       .section __ex_table,\"a\"\n"
+        "       .pushsection __ex_table,\"a\"\n"
         "       .align  3\n"
         "       .long   1b, 4f, 2b, 4f\n"
-        "       .previous\n"
-        "       .section .fixup,\"ax\"\n"
+        "       .popsection\n"
+        "       .pushsection .fixup,\"ax\"\n"
         "4:     mov     %0, %4\n"
         "       b       3b\n"
-        "       .previous"
+        "       .popsection"
         : "=&r" (val)
         : "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
         : "cc", "memory");
diff --git a/arch/arm/include/asm/highmem.h b/arch/arm/include/asm/highmem.h
index 7f36d00600b4..feb988a7ec37 100644
--- a/arch/arm/include/asm/highmem.h
+++ b/arch/arm/include/asm/highmem.h
@@ -11,7 +11,11 @@
 
 #define kmap_prot               PAGE_KERNEL
 
-#define flush_cache_kmaps()     flush_cache_all()
+#define flush_cache_kmaps() \
+        do { \
+                if (cache_is_vivt()) \
+                        flush_cache_all(); \
+        } while (0)
 
 extern pte_t *pkmap_page_table;
 
@@ -21,11 +25,20 @@ extern void *kmap_high(struct page *page);
 extern void *kmap_high_get(struct page *page);
 extern void kunmap_high(struct page *page);
 
+extern void *kmap_high_l1_vipt(struct page *page, pte_t *saved_pte);
+extern void kunmap_high_l1_vipt(struct page *page, pte_t saved_pte);
+
+/*
+ * The following functions are already defined by <linux/highmem.h>
+ * when CONFIG_HIGHMEM is not set.
+ */
+#ifdef CONFIG_HIGHMEM
 extern void *kmap(struct page *page);
 extern void kunmap(struct page *page);
 extern void *kmap_atomic(struct page *page, enum km_type type);
 extern void kunmap_atomic(void *kvaddr, enum km_type type);
 extern void *kmap_atomic_pfn(unsigned long pfn, enum km_type type);
 extern struct page *kmap_atomic_to_page(const void *ptr);
+#endif
 
 #endif
diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h
index 328f14a8b790..237282f7c762 100644
--- a/arch/arm/include/asm/irq.h
+++ b/arch/arm/include/asm/irq.h
@@ -17,6 +17,7 @@
 
 #ifndef __ASSEMBLY__
 struct irqaction;
+struct pt_regs;
 extern void migrate_irqs(void);
 
 extern void asm_do_IRQ(unsigned int, struct pt_regs *);
diff --git a/arch/arm/include/asm/kmap_types.h b/arch/arm/include/asm/kmap_types.h
index c019949a5189..c4b2ea3fbe42 100644
--- a/arch/arm/include/asm/kmap_types.h
+++ b/arch/arm/include/asm/kmap_types.h
@@ -18,6 +18,7 @@ enum km_type {
         KM_IRQ1,
         KM_SOFTIRQ0,
         KM_SOFTIRQ1,
+        KM_L1_CACHE,
         KM_L2_CACHE,
         KM_TYPE_NR
 };
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
new file mode 100644
index 000000000000..25f76bae57ab
--- /dev/null
+++ b/arch/arm/include/asm/outercache.h
@@ -0,0 +1,75 @@
+/*
+ * arch/arm/include/asm/outercache.h
+ *
+ * Copyright (C) 2010 ARM Ltd.
+ * Written by Catalin Marinas <catalin.marinas@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OUTERCACHE_H
+#define __ASM_OUTERCACHE_H
+
+struct outer_cache_fns {
+        void (*inv_range)(unsigned long, unsigned long);
+        void (*clean_range)(unsigned long, unsigned long);
+        void (*flush_range)(unsigned long, unsigned long);
+#ifdef CONFIG_OUTER_CACHE_SYNC
+        void (*sync)(void);
+#endif
+};
+
+#ifdef CONFIG_OUTER_CACHE
+
+extern struct outer_cache_fns outer_cache;
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{
+        if (outer_cache.inv_range)
+                outer_cache.inv_range(start, end);
+}
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{
+        if (outer_cache.clean_range)
+                outer_cache.clean_range(start, end);
+}
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{
+        if (outer_cache.flush_range)
+                outer_cache.flush_range(start, end);
+}
+
+#else
+
+static inline void outer_inv_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_clean_range(unsigned long start, unsigned long end)
+{ }
+static inline void outer_flush_range(unsigned long start, unsigned long end)
+{ }
+
+#endif
+
+#ifdef CONFIG_OUTER_CACHE_SYNC
+static inline void outer_sync(void)
+{
+        if (outer_cache.sync)
+                outer_cache.sync();
+}
+#else
+static inline void outer_sync(void)
+{ }
+#endif
+
+#endif  /* __ASM_OUTERCACHE_H */
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 02f5d99adbc0..5f4f48002734 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -60,6 +60,8 @@
 #include <linux/linkage.h>
 #include <linux/irqflags.h>
 
+#include <asm/outercache.h>
+
 #define __exception     __attribute__((section(".exception.text")))
 
 struct thread_info;
@@ -137,10 +139,12 @@ extern unsigned int user_debug;
 #define dmb() __asm__ __volatile__ ("" : : : "memory")
 #endif
 
-#if defined(CONFIG_ARM_DMA_MEM_BUFFERABLE) || defined(CONFIG_SMP)
-#define mb()            dmb()
+#ifdef CONFIG_ARCH_HAS_BARRIERS
+#include <mach/barriers.h>
+#elif defined(CONFIG_ARM_DMA_MEM_BUFFERABLE) || defined(CONFIG_SMP)
+#define mb()            do { dsb(); outer_sync(); } while (0)
 #define rmb()           dmb()
-#define wmb()           dmb()
+#define wmb()           mb()
 #else
 #define mb()    do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
 #define rmb()   do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
@@ -152,9 +156,9 @@ extern unsigned int user_debug;
 #define smp_rmb()       barrier()
 #define smp_wmb()       barrier()
 #else
-#define smp_mb()        mb()
-#define smp_rmb()       rmb()
-#define smp_wmb()       wmb()
+#define smp_mb()        dmb()
+#define smp_rmb()       dmb()
+#define smp_wmb()       dmb()
 #endif
 
 #define read_barrier_depends()          do { } while(0)
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 1d6bd40a4322..33e4a48fe103 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -229,16 +229,16 @@ do {									\
         __asm__ __volatile__(                                   \
         "1:     ldrbt   %1,[%2]\n"                              \
         "2:\n"                                                  \
-        "       .section .fixup,\"ax\"\n"                       \
+        "       .pushsection .fixup,\"ax\"\n"                   \
         "       .align  2\n"                                    \
         "3:     mov     %0, %3\n"                               \
         "       mov     %1, #0\n"                               \
         "       b       2b\n"                                   \
-        "       .previous\n"                                    \
-        "       .section __ex_table,\"a\"\n"                    \
+        "       .popsection\n"                                  \
+        "       .pushsection __ex_table,\"a\"\n"                \
         "       .align  3\n"                                    \
         "       .long   1b, 3b\n"                               \
-        "       .previous"                                      \
+        "       .popsection"                                    \
         : "+r" (err), "=&r" (x)                                 \
         : "r" (addr), "i" (-EFAULT)                             \
         : "cc")
@@ -265,16 +265,16 @@ do {									\
         __asm__ __volatile__(                                   \
         "1:     ldrt    %1,[%2]\n"                              \
         "2:\n"                                                  \
-        "       .section .fixup,\"ax\"\n"                       \
+        "       .pushsection .fixup,\"ax\"\n"                   \
         "       .align  2\n"                                    \
         "3:     mov     %0, %3\n"                               \
         "       mov     %1, #0\n"                               \
         "       b       2b\n"                                   \
-        "       .previous\n"                                    \
-        "       .section __ex_table,\"a\"\n"                    \
+        "       .popsection\n"                                  \
+        "       .pushsection __ex_table,\"a\"\n"                \
         "       .align  3\n"                                    \
         "       .long   1b, 3b\n"                               \
-        "       .previous"                                      \
+        "       .popsection"                                    \
         : "+r" (err), "=&r" (x)                                 \
         : "r" (addr), "i" (-EFAULT)                             \
         : "cc")
@@ -310,15 +310,15 @@ do {									\
         __asm__ __volatile__(                                   \
         "1:     strbt   %1,[%2]\n"                              \
         "2:\n"                                                  \
-        "       .section .fixup,\"ax\"\n"                       \
+        "       .pushsection .fixup,\"ax\"\n"                   \
         "       .align  2\n"                                    \
         "3:     mov     %0, %3\n"                               \
         "       b       2b\n"                                   \
-        "       .previous\n"                                    \
-        "       .section __ex_table,\"a\"\n"                    \
+        "       .popsection\n"                                  \
+        "       .pushsection __ex_table,\"a\"\n"                \
         "       .align  3\n"                                    \
         "       .long   1b, 3b\n"                               \
-        "       .previous"                                      \
+        "       .popsection"                                    \
         : "+r" (err)                                            \
         : "r" (x), "r" (__pu_addr), "i" (-EFAULT)               \
         : "cc")
@@ -343,15 +343,15 @@ do {									\
         __asm__ __volatile__(                                   \
         "1:     strt    %1,[%2]\n"                              \
         "2:\n"                                                  \
-        "       .section .fixup,\"ax\"\n"                       \
+        "       .pushsection .fixup,\"ax\"\n"                   \
         "       .align  2\n"                                    \
         "3:     mov     %0, %3\n"                               \
         "       b       2b\n"                                   \
-        "       .previous\n"                                    \
-        "       .section __ex_table,\"a\"\n"                    \
+        "       .popsection\n"                                  \
+        "       .pushsection __ex_table,\"a\"\n"                \
         "       .align  3\n"                                    \
         "       .long   1b, 3b\n"                               \
-        "       .previous"                                      \
+        "       .popsection"                                    \
         : "+r" (err)                                            \
         : "r" (x), "r" (__pu_addr), "i" (-EFAULT)               \
         : "cc")
@@ -371,16 +371,16 @@ do {									\
  THUMB( "1:     strt    " __reg_oper1 ", [%1]\n"        )       \
  THUMB( "2:     strt    " __reg_oper0 ", [%1, #4]\n"    )       \
         "3:\n"                                                  \
-        "       .section .fixup,\"ax\"\n"                       \
+        "       .pushsection .fixup,\"ax\"\n"                   \
         "       .align  2\n"                                    \
         "4:     mov     %0, %3\n"                               \
         "       b       3b\n"                                   \
-        "       .previous\n"                                    \
-        "       .section __ex_table,\"a\"\n"                    \
+        "       .popsection\n"                                  \
+        "       .pushsection __ex_table,\"a\"\n"                \
         "       .align  3\n"                                    \
         "       .long   1b, 4b\n"                               \
         "       .long   2b, 4b\n"                               \
-        "       .previous"                                      \
+        "       .popsection"                                    \
         : "+r" (err), "+r" (__pu_addr)                          \
         : "r" (x), "i" (-EFAULT)                                \
         : "cc")
diff --git a/arch/arm/include/asm/ucontext.h b/arch/arm/include/asm/ucontext.h
index bf65e9f4525d..47f023aa8495 100644
--- a/arch/arm/include/asm/ucontext.h
+++ b/arch/arm/include/asm/ucontext.h
@@ -59,23 +59,22 @@ struct iwmmxt_sigframe {
 #endif /* CONFIG_IWMMXT */
 
 #ifdef CONFIG_VFP
-#if __LINUX_ARM_ARCH__ < 6
-/* For ARM pre-v6, we use fstmiax and fldmiax.  This adds one extra
- * word after the registers, and a word of padding at the end for
- * alignment.  */
 #define VFP_MAGIC               0x56465001
-#define VFP_STORAGE_SIZE        152
-#else
-#define VFP_MAGIC               0x56465002
-#define VFP_STORAGE_SIZE        144
-#endif
 
 struct vfp_sigframe
 {
         unsigned long           magic;
         unsigned long           size;
-        union vfp_state         storage;
-};
+        struct user_vfp         ufp;
+        struct user_vfp_exc     ufp_exc;
+} __attribute__((__aligned__(8)));
+
+/*
+ *  8 byte for magic and size, 264 byte for ufp, 12 bytes for ufp_exc,
+ *  4 bytes padding.
+ */
+#define VFP_STORAGE_SIZE        sizeof(struct vfp_sigframe)
+
 #endif /* CONFIG_VFP */
 
 /*
@@ -91,7 +90,7 @@ struct aux_sigframe {
 #ifdef CONFIG_IWMMXT
         struct iwmmxt_sigframe  iwmmxt;
 #endif
-#if 0 && defined CONFIG_VFP /* Not yet saved.  */
+#ifdef CONFIG_VFP
         struct vfp_sigframe     vfp;
 #endif
         /* Something that isn't a valid magic number for any coprocessor.  */
diff --git a/arch/arm/include/asm/user.h b/arch/arm/include/asm/user.h
index df95e050f9dd..05ac4b06876a 100644
--- a/arch/arm/include/asm/user.h
+++ b/arch/arm/include/asm/user.h
@@ -83,11 +83,21 @@ struct user{
 
 /*
  * User specific VFP registers. If only VFPv2 is present, registers 16 to 31
- * are ignored by the ptrace system call.
+ * are ignored by the ptrace system call and the signal handler.
  */
 struct user_vfp {
         unsigned long long fpregs[32];
         unsigned long fpscr;
 };
 
+/*
+ * VFP exception registers exposed to user space during signal delivery.
+ * Fields not relavant to the current VFP architecture are ignored.
+ */
+struct user_vfp_exc {
+        unsigned long   fpexc;
+        unsigned long   fpinst;
+        unsigned long   fpinst2;
+};
+
 #endif /* _ARM_USER_H */