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authorBorislav Petkov <bp@suse.de>2015-05-13 19:42:23 +0200
committerIngo Molnar <mingo@kernel.org>2015-05-14 07:25:34 +0200
commit9e6b13f761d5914a8c9b83610e8d459653515c94 (patch)
tree241fdaea2c9e88c3b230227bc83594e9d2a6ff87 /arch/x86/lib
parent26e7d9dee8a5b6c844178c8e2d91be540ce311c0 (diff)
downloadlinux-9e6b13f761d5914a8c9b83610e8d459653515c94.tar.bz2
x86/asm/uaccess: Unify the ALIGN_DESTINATION macro
Pull it up into the header and kill duplicate versions. Separately, both macros are identical: 35948b2bd3431aee7149e85cfe4becbc /tmp/a 35948b2bd3431aee7149e85cfe4becbc /tmp/b Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1431538944-27724-3-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/lib')
-rw-r--r--arch/x86/lib/copy_user_64.S24
-rw-r--r--arch/x86/lib/copy_user_nocache_64.S24
2 files changed, 0 insertions, 48 deletions
diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
index fa997dfaef24..06ce685c3a5d 100644
--- a/arch/x86/lib/copy_user_64.S
+++ b/arch/x86/lib/copy_user_64.S
@@ -16,30 +16,6 @@
#include <asm/asm.h>
#include <asm/smap.h>
- .macro ALIGN_DESTINATION
- /* check for bad alignment of destination */
- movl %edi,%ecx
- andl $7,%ecx
- jz 102f /* already aligned */
- subl $8,%ecx
- negl %ecx
- subl %ecx,%edx
-100: movb (%rsi),%al
-101: movb %al,(%rdi)
- incq %rsi
- incq %rdi
- decl %ecx
- jnz 100b
-102:
- .section .fixup,"ax"
-103: addl %ecx,%edx /* ecx is zerorest also */
- jmp copy_user_handle_tail
- .previous
-
- _ASM_EXTABLE(100b,103b)
- _ASM_EXTABLE(101b,103b)
- .endm
-
/* Standard copy_to_user with segment limit checking */
ENTRY(_copy_to_user)
CFI_STARTPROC
diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S
index 42eeb12e0cd9..b836a2bace15 100644
--- a/arch/x86/lib/copy_user_nocache_64.S
+++ b/arch/x86/lib/copy_user_nocache_64.S
@@ -14,30 +14,6 @@
#include <asm/asm.h>
#include <asm/smap.h>
- .macro ALIGN_DESTINATION
- /* check for bad alignment of destination */
- movl %edi,%ecx
- andl $7,%ecx
- jz 102f /* already aligned */
- subl $8,%ecx
- negl %ecx
- subl %ecx,%edx
-100: movb (%rsi),%al
-101: movb %al,(%rdi)
- incq %rsi
- incq %rdi
- decl %ecx
- jnz 100b
-102:
- .section .fixup,"ax"
-103: addl %ecx,%edx /* ecx is zerorest also */
- jmp copy_user_handle_tail
- .previous
-
- _ASM_EXTABLE(100b,103b)
- _ASM_EXTABLE(101b,103b)
- .endm
-
/*
* copy_user_nocache - Uncached memory copy with exception handling
* This will force destination/source out of cache for more performance.