* H. Peter Anvin <h...@zytor.com> wrote:
> On 01/25/2013 02:11 PM, H. Peter Anvin wrote:
> > On 01/25/2013 02:43 AM, tip-bot for Jan Beulich wrote:
> >> Commit-ID: 05fbf4d6fc6a3c0c3e63b77979c9311596716d10
> >> Gitweb:
> >> http://git.kernel.org/tip/05fbf4d6fc6a3c0c3e63b77979c9311596716d10
> >> Author: Jan Beulich <jbeul...@suse.com>
> >> AuthorDate: Fri, 2 Nov 2012 14:21:23 +0000
> >> Committer: Ingo Molnar <mi...@kernel.org>
> >> CommitDate: Fri, 25 Jan 2013 09:23:51 +0100
> >>
> >> x86/xor: Make virtualization friendly
> >>
> >> In virtualized environments, the CR0.TS management needed here
> >> can be a lot slower than anticipated by the original authors of
> >> this code, which particularly means that in such cases forcing
> >> the use of SSE- (or MMX-) based implementations is not desirable
> >> - actual measurements should always be done in that case.
> >>
> >> For consistency, pull into the shared (32- and 64-bit) header
> >> not only the inclusion of the generic code, but also that of the
> >> AVX variants.
> >>
> >
> > This patch is wrong and should be dropped. I verified it with the KVM
> > people that they do NOT want this change. It is a Xen-specific problem.
> >
>
> FWIW: I have dropped this patch from tip:x86/asm.
Thanks - and the other two patches are fine, right?
Ingo
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