Messages in this thread | | | Subject | Re: [PATCH v6 10/34] x86, x86/mm, x86/xen, olpc: Use __va() against just the physical address in cr3 | From | Tom Lendacky <> | Date | Thu, 8 Jun 2017 16:02:37 -0500 |
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On 6/8/2017 3:51 PM, Boris Ostrovsky wrote: > >> >>> What may be needed is making sure X86_FEATURE_SME is not set for PV >>> guests. >> >> And that may be something that Xen will need to control through either >> CPUID or MSR support for the PV guests. > > > Only on newer versions of Xen. On earlier versions (2-3 years old) leaf > 0x80000007 is passed to the guest unchanged. And so is MSR_K8_SYSCFG.
The SME feature is in leaf 0x8000001f, is that leaf passed to the guest unchanged?
Thanks, Tom
> > -boris >
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