BMC/Intel-BMC/linux.git/arch/x86/include/asm/switch_to.h, branch dev

Revert "sched/x86_64: Don't save flags on context switch"

2015-08-18T07:39:26+00:00

This reverts commit: 2c7577a75837 ("sched/x86_64: Don't save flags on context switch") It was a nice speedup. It's also not quite correct: SYSENTER enables interrupts too early. We can re-add this optimization once the SYSENTER code is beaten into shape, which should happen in 4.3 or 4.4. Signed-off-by: Andy Lutomirski Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: stable@vger.kernel.org # v3.19 Link: http://lkml.kernel.org/r/85f56651f59f76624e80785a8fd3bdfdd089a818.1439838962.git.luto@kernel.org Signed-off-by: Ingo Molnar

sched/x86_64: Don't save flags on context switch

2014-10-28T10:11:30+00:00

Now that the kernel always runs with clean flags (in particular, NT is clear), there is no need to save and restore flags on every context switch. Signed-off-by: Andy Lutomirski Cc: Sebastian Lackner Cc: Anish Bhatt Cc: Chuck Ebbert Cc: Linus Torvalds Cc: Jan Beulich Link: http://lkml.kernel.org/r/bf6fb790787eb95b922157838f52712c25dda157.1412187233.git.luto@amacapital.net Signed-off-by: Ingo Molnar

x86, asmlinkage: Make 32bit/64bit __switch_to visible

2013-08-06T21:18:30+00:00

This function is called from inline assembler, so has to be visible. Signed-off-by: Andi Kleen Link: http://lkml.kernel.org/r/1375740170-7446-6-git-send-email-andi@firstfloor.org Signed-off-by: H. Peter Anvin

Disintegrate asm/system.h for X86

2012-03-28T17:11:12+00:00

Disintegrate asm/system.h for X86. Signed-off-by: David Howells Acked-by: H. Peter Anvin cc: x86@kernel.org