Messages in this thread | | | Date | Tue, 19 Feb 2013 13:26:13 -0500 | From | Boris Ostrovsky <> | Subject | Re: [GIT PULL] x86/cpu changes for v3.9 |
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On 02/19/2013 01:21 PM, H. Peter Anvin wrote: > On 02/19/2013 10:19 AM, Boris Ostrovsky wrote: >> 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? >> > > As I stated: > > >>>> 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.
Ah, sorry --- I missed that part.
-boris
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