[POWERPC] Add inatomic versions of __get_user and __put_user

Those are needed by things like alignment exception fixup handlers
since those can now be triggered by copy_tofrom_user_inatomic.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/include/asm-powerpc/uaccess.h b/include/asm-powerpc/uaccess.h
index adbf16b8cfbb..8e798e3758bc 100644
--- a/include/asm-powerpc/uaccess.h
+++ b/include/asm-powerpc/uaccess.h
@@ -110,12 +110,18 @@ struct exception_table_entry {
         __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
 #define __put_user(x, ptr) \
         __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
+
 #ifndef __powerpc64__
 #define __get_user64(x, ptr) \
         __get_user64_nocheck((x), (ptr), sizeof(*(ptr)))
 #define __put_user64(x, ptr) __put_user(x, ptr)
 #endif
 
+#define __get_user_inatomic(x, ptr) \
+        __get_user_nosleep((x), (ptr), sizeof(*(ptr)))
+#define __put_user_inatomic(x, ptr) \
+        __put_user_nosleep((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
+
 #define __get_user_unaligned __get_user
 #define __put_user_unaligned __put_user
 
@@ -198,6 +204,16 @@ do {								\
         __pu_err;                                                       \
 })
 
+#define __put_user_nosleep(x, ptr, size)                        \
+({                                                              \
+        long __pu_err;                                          \
+        __typeof__(*(ptr)) __user *__pu_addr = (ptr);           \
+        __chk_user_ptr(ptr);                                    \
+        __put_user_size((x), __pu_addr, (size), __pu_err);      \
+        __pu_err;                                               \
+})
+
+
 extern long __get_user_bad(void);
 
 #define __get_user_asm(x, addr, err, op)                \
@@ -297,6 +313,18 @@ do {								\
         __gu_err;                                                       \
 })
 
+#define __get_user_nosleep(x, ptr, size)                        \
+({                                                              \
+        long __gu_err;                                          \
+        unsigned long __gu_val;                                 \
+        const __typeof__(*(ptr)) __user *__gu_addr = (ptr);     \
+        __chk_user_ptr(ptr);                                    \
+        __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
+        (x) = (__typeof__(*(ptr)))__gu_val;                     \
+        __gu_err;                                               \
+})
+
+
 /* more complex routines */
 
 extern unsigned long __copy_tofrom_user(void __user *to,