Re: [GIT PULL] x86/cpu changes for v3.9

From: Boris Ostrovsky
Date: Tue Feb 19 2013 - 13:19:49 EST

On 02/19/2013 12:57 PM, Konrad Rzeszutek Wilk wrote:
On Tue, Feb 19, 2013 at 06:47:58PM +0100, Borislav Petkov wrote:
On Tue, Feb 19, 2013 at 09:38:31AM -0800, H. Peter Anvin wrote:
My fault... I was tracking the fix and lost track of the thread.

The problem is that the fix is necessary but not sufficient, as it
introduces an undesirable host-guest dependency. In order to allow
neerw guests to work on older hosts we also should use the
{rd,wr}msr_safe() functions to manipulate this MSR, with a comment
as to why.

Boris, could you prepare such a patch, please?
I don't think Boris O. is at AMD anymore. Want me to add that to my fix
for kvm or prep a separate patch?
CC-ing Boris.

BorisP's patch is what I should have done. Can you take it?


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