On 06/08/16 at 09:45P, Borislav Petkov wrote:
> On Wed, Jun 08, 2016 at 09:11:39PM +0300, Roman Kagan wrote:
> > Gradual removal of excessive barriers in pvclock reading functions
> > (commits 502dfeff239e8313bfbe906ca0a1a6827ac8481b,
> > a3eb97bd80134ba07864ca00747466c02118aca1) ended up removing
On Thu, Jun 09, 2016 at 12:01:13AM +0300, Roman Kagan wrote:
> On Wed, Jun 08, 2016 at 09:45:09PM +0200, Borislav Petkov wrote:
> > On Wed, Jun 08, 2016 at 09:11:39PM +0300, Roman Kagan wrote:
> > > --- a/arch/x86/include/asm/pvclock.h
> > > +++ b/arch/x86/include/asm/pvclock.h
> > > @@ -80,18 +80,
On Wed, Jun 08, 2016 at 09:45:09PM +0200, Borislav Petkov wrote:
> On Wed, Jun 08, 2016 at 09:11:39PM +0300, Roman Kagan wrote:
> > Gradual removal of excessive barriers in pvclock reading functions
> > (commits 502dfeff239e8313bfbe906ca0a1a6827ac8481b,
> > a3eb97bd80134ba07864ca00747466c02118aca1)
On Wed, Jun 08, 2016 at 09:11:39PM +0300, Roman Kagan wrote:
> Gradual removal of excessive barriers in pvclock reading functions
> (commits 502dfeff239e8313bfbe906ca0a1a6827ac8481b,
> a3eb97bd80134ba07864ca00747466c02118aca1) ended up removing too much:
> although rdtsc is now orderd WRT other loa
Gradual removal of excessive barriers in pvclock reading functions
(commits 502dfeff239e8313bfbe906ca0a1a6827ac8481b,
a3eb97bd80134ba07864ca00747466c02118aca1) ended up removing too much:
although rdtsc is now orderd WRT other loads, there's no protection
against the compiler reordering the loads o
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