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

From: H. Peter Anvin
Date: Tue Feb 19 2013 - 12:40:12 EST

On 02/19/2013 07:47 AM, Ingo Molnar wrote:

Those kill a kvm guest with a #GP. Can we apply the fix for it too pls?

Linus, please skip this pull request, we'll sort it out.

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?


H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at