Commit 42693290 authored by Jan Beulich's avatar Jan Beulich Committed by Ingo Molnar

x86-64: Slightly shorten copy_page()

%r13 got saved and restored without ever getting touched, so
there's no need to do so.
Signed-off-by: default avatarJan Beulich <jbeulich@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/4F05D9F9020000780006AA0D@nat28.tlf.novell.comSigned-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent ceb7b40b
......@@ -20,14 +20,12 @@ ENDPROC(copy_page_c)
ENTRY(copy_page)
CFI_STARTPROC
subq $3*8,%rsp
CFI_ADJUST_CFA_OFFSET 3*8
subq $2*8,%rsp
CFI_ADJUST_CFA_OFFSET 2*8
movq %rbx,(%rsp)
CFI_REL_OFFSET rbx, 0
movq %r12,1*8(%rsp)
CFI_REL_OFFSET r12, 1*8
movq %r13,2*8(%rsp)
CFI_REL_OFFSET r13, 2*8
movl $(4096/64)-5,%ecx
.p2align 4
......@@ -91,10 +89,8 @@ ENTRY(copy_page)
CFI_RESTORE rbx
movq 1*8(%rsp),%r12
CFI_RESTORE r12
movq 2*8(%rsp),%r13
CFI_RESTORE r13
addq $3*8,%rsp
CFI_ADJUST_CFA_OFFSET -3*8
addq $2*8,%rsp
CFI_ADJUST_CFA_OFFSET -2*8
ret
.Lcopy_page_end:
CFI_ENDPROC
......
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