Messages in this thread Patch in this message | | | Subject | [patch 083/198] x86_64: Fix a small missing schedule race | From | akpm@osdl ... | Date | Tue, 12 Apr 2005 03:31:51 -0700 |
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From: "Andi Kleen" <ak@suse.de>
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> ---
25-akpm/arch/x86_64/kernel/entry.S | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/x86_64/kernel/entry.S~x86_64-fix-a-small-missing-schedule-race arch/x86_64/kernel/entry.S --- 25/arch/x86_64/kernel/entry.S~x86_64-fix-a-small-missing-schedule-race 2005-04-12 03:21:23.062630848 -0700 +++ 25-akpm/arch/x86_64/kernel/entry.S 2005-04-12 03:21:23.066630240 -0700 @@ -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 _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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