Messages in this thread | | | Date | Mon, 9 Jan 2012 10:14:09 -0200 | From | Marcelo Tosatti <> | Subject | Re: [PATCH v2.1] KVM: SVM: Add support for AMD's OSVW feature in guests |
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On Fri, Jan 06, 2012 at 11:13:56AM -0500, Boris Ostrovsky wrote: > From: Boris Ostrovsky <boris.ostrovsky@amd.com> > > In some cases guests should not provide workarounds for errata even when the > physical processor is affected. For example, because of erratum 400 on family > 10h processors a Linux guest will read an MSR (resulting in VMEXIT) before > going to idle in order to avoid getting stuck in a non-C0 state. This is not > necessary: HLT and IO instructions are intercepted and therefore there is no > reason for erratum 400 workaround in the guest. > > This patch allows us to present a guest with certain errata as fixed, > regardless of the state of actual hardware. > > Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
Patch does not apply, please regenerate against git://git.kernel.org/pub/scm/virt/kvm/kvm.git master branch.
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