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[PATCH] x86_64: Call do_notify_resume unconditionally in entry.S

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This removes some unnecessary code in the assembly files.

Matches i386 behaviour.

In addition don't clear the work check mask after work has been done.
This fixes some theoretical signal/other event losses.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-04-16 15:25:02 -07:00 committed by Linus Torvalds
parent 36c1104e30
commit 11b854b2f1
1 changed files with 8 additions and 18 deletions
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26
arch/x86_64/kernel/entry.S
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@ -197,7 +197,7 @@ ENTRY(system_call)
*/
.globl ret_from_sys_call
ret_from_sys_call:
movl $_TIF_WORK_MASK,%edi
movl $_TIF_ALLWORK_MASK,%edi
/* edi: flagmask */
sysret_check:
GET_THREAD_INFO(%rcx)
@ -223,18 +223,13 @@ sysret_careful:
jmp sysret_check
/* Handle a signal */
/* edx: work flags (arg3) */
sysret_signal:
sti
testl $(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SINGLESTEP),%edx
jz 1f
/* Really a signal */
/* edx: work flags (arg3) */
leaq do_notify_resume(%rip),%rax
leaq -ARGOFFSET(%rsp),%rdi # &pt_regs -> arg1
xorl %esi,%esi # oldset -> arg2
call ptregscall_common
1: movl $_TIF_NEED_RESCHED,%edi
jmp sysret_check
/* Do syscall tracing */
@ -490,8 +485,6 @@ retint_careful:
jmp retint_check
retint_signal:
testl $(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SINGLESTEP),%edx
jz retint_swapgs
sti
SAVE_REST
movq $-1,ORIG_RAX(%rsp)
@ -500,7 +493,6 @@ retint_signal:
call do_notify_resume
RESTORE_REST
cli
movl $_TIF_NEED_RESCHED,%edi
GET_THREAD_INFO(%rcx)
jmp retint_check
@ -829,21 +821,19 @@ paranoid_userspace:
cli
GET_THREAD_INFO(%rcx)
movl threadinfo_flags(%rcx),%edx
testl $_TIF_WORK_MASK,%edx
jz paranoid_swapgs
testl $_TIF_NEED_RESCHED,%edx
jnz paranoid_resched
testl $(_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SINGLESTEP),%edx
jnz paranoid_signal
jmp paranoid_swapgs
paranoid_resched:
sti
call schedule
jmp paranoid_exit
paranoid_signal:
sti
xorl %esi,%esi /* oldset */
movq %rsp,%rdi /* &pt_regs */
call do_notify_resume
jmp paranoid_exit
paranoid_resched:
sti
call schedule
jmp paranoid_exit
CFI_ENDPROC
ENTRY(int3)