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powerpc/uaccess: Add pre-update addressing to __get_user_asm() and __put_user_asm() 

Enable pre-update addressing mode in __get_user_asm() and __put_user_asm()

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/13041c7df39e89ddf574ea0cdc6dedfdd9734140.1597235091.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-08-12 12:25:17 +00:00 committed by Michael Ellerman
parent c20beffeec
commit 2f279eeb68
1 changed files with 4 additions and 4 deletions
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8
arch/powerpc/include/asm/uaccess.h
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@ -158,7 +158,7 @@ extern long __put_user_bad(void);
*/
#define __put_user_asm(x, addr, err, op) \
__asm__ __volatile__( \
"1: " op "%X2 %1,%2 # put_user\n" \
"1: " op "%U2%X2 %1,%2 # put_user\n" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3: li %0,%3\n" \
@ -166,7 +166,7 @@ extern long __put_user_bad(void);
".previous\n" \
EX_TABLE(1b, 3b) \
: "=r" (err) \
: "r" (x), "m" (*addr), "i" (-EFAULT), "0" (err))
: "r" (x), "m<>" (*addr), "i" (-EFAULT), "0" (err))
#ifdef __powerpc64__
#define __put_user_asm2(x, ptr, retval) \
@ -316,7 +316,7 @@ extern long __get_user_bad(void);
#define __get_user_asm(x, addr, err, op) \
__asm__ __volatile__( \
"1: "op"%X2 %1, %2 # get_user\n" \
"1: "op"%U2%X2 %1, %2 # get_user\n" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3: li %0,%3\n" \
@ -325,7 +325,7 @@ extern long __get_user_bad(void);
".previous\n" \
EX_TABLE(1b, 3b) \
: "=r" (err), "=r" (x) \
: "m" (*addr), "i" (-EFAULT), "0" (err))
: "m<>" (*addr), "i" (-EFAULT), "0" (err))
#ifdef __powerpc64__
#define __get_user_asm2(x, addr, err) \