Commit cdd219cd authored Apr 16, 2005 by Andi Kleen Committed by Linus Torvalds Apr 16, 2005

[PATCH] x86_64: Fix a small missing schedule race



Could lead to a lost reschedule event when the process already rescheduled on
exception exit, and needs it again while still being in the kernel.  Unlikely
case though.

Also remove one redundant cli in another entry.S path.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 6fefb0d1

arch/x86_64/kernel/entry.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -284,6 +284,7 @@ int_careful:
		pushq %rdi
		call schedule
		popq %rdi
		cli
		jmp int_with_check

		/* handle signals and tracing -- both require a full stack frame */
		@@ -453,7 +454,6 @@ retint_check:
		andl %edi,%edx
		jnz retint_careful
		retint_swapgs:
		cli
		swapgs
		retint_restore_args:
		cli

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