lkml.org 
[lkml]   [2012]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] bitops: add _local bitops
On Wed, May 09, 2012 at 01:10:04PM -0700, H. Peter Anvin wrote:
> On 05/09/2012 01:07 PM, Michael S. Tsirkin wrote:
> >
> > In practice ATM any of the above will work. We probably don't even need
> > to add barrier() calls since what we do afterwards is apic access which
> > has an optimization barrier anyway. But I'm fine with adding them in
> > there just in case if that's what people want.
> >
>
> If you have the optimization barrier anyway, then I'd be fine with you
> just using __test_and_clear_bit() and add to a comment in
> arch/x86/include/asm/bitops.h that KVM needs it to be locally atomic.
>
> -hpa

Sounds good. Avi?


\
 
 \ /
  Last update: 2012-05-09 22:41    [from the cache]
©2003-2011 Jasper Spaans