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OpenCloudOS-Kernel
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x86: wrong register was used in align macro 

New ALIGN_DESTINATION macro has sad typo: r8d register was used instead
of ecx in fixup section. This can be considered as a regression.

Register ecx was also wrongly loaded with value in r8d in
copy_user_nocache routine.

Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vitaly Mayatskikh 2008-07-30 13:30:14 +02:00 committed by Linus Torvalds
parent bd3e64c175
commit afd962a9e8
2 changed files with 2 additions and 3 deletions
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2
arch/x86/lib/copy_user_64.S
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@ -52,7 +52,7 @@
jnz 100b
102:
.section .fixup,"ax"
103: addl %r8d,%edx /* ecx is zerorest also */
103: addl %ecx,%edx /* ecx is zerorest also */
jmp copy_user_handle_tail
.previous

3
arch/x86/lib/copy_user_nocache_64.S
View File

@ -32,7 +32,7 @@
jnz 100b
102:
.section .fixup,"ax"
103: addl %r8d,%edx /* ecx is zerorest also */
103: addl %ecx,%edx /* ecx is zerorest also */
jmp copy_user_handle_tail
.previous
@ -108,7 +108,6 @@ ENTRY(__copy_user_nocache)
jmp 60f
50: movl %ecx,%edx
60: sfence
movl %r8d,%ecx
jmp copy_user_handle_tail
.previous