On 12/7/20 5:06 PM, Jim Mattson wrote:
> On Mon, Dec 7, 2020 at 2:38 PM Babu Moger wrote:
>>
>> Newer AMD processors have a feature to virtualize the use of the
>> SPEC_CTRL MSR. When supported, the SPEC_CTRL MSR is automatically
>> virtualized and no longer requires hypervisor intervention.
>>> maintainers ; kyung.min.p...@intel.com; LKML >> ker...@vger.kernel.org>; Krish Sadhukhan ; H .
>>> Peter Anvin ; mgr...@linux.intel.com; Vitaly Kuznetsov
>>> ; Phillips, Kim ; Huang2, Wei
>>>
>>> Subject: Re: [PATCH 2/2] KVM: SVM: Add support for V
s ;
> Peter Zijlstra ; Sean Christopherson
> ; Joerg Roedel ; the arch/x86
> maintainers ; kyung.min.p...@intel.com; LKML ker...@vger.kernel.org>; Krish Sadhukhan ; H .
> Peter Anvin ; mgr...@linux.intel.com; Vitaly Kuznetsov
> ; Phillips, Kim ; Huang2, Wei
>
> Subject: Re: [PAT
an ; H .
> > Peter Anvin ; mgr...@linux.intel.com; Vitaly Kuznetsov
> > ; Phillips, Kim ; Huang2, Wei
> >
> > Subject: Re: [PATCH 2/2] KVM: SVM: Add support for Virtual SPEC_CTRL
> >
> > On Mon, Dec 7, 2020 at 2:38 PM Babu Moger wrote:
> > >
> >
Sean, Your response did not land in my mailbox for some reason.
Replying using In-reply-to option.
>Hrm, is MSR_AMD64_VIRT_SPEC_CTRL only for SSBD? Should that MSR be renamed to
>avoid confusion with the new form of VIRT_SPEC_CTRL?
We can rename it to MSR_AMD64_VIRT_SSBD_SPEC_CTRL if that is
On Mon, Dec 07, 2020, Babu Moger wrote:
> Newer AMD processors have a feature to virtualize the use of the
> SPEC_CTRL MSR. When supported, the SPEC_CTRL MSR is automatically
> virtualized and no longer requires hypervisor intervention.
Hrm, is MSR_AMD64_VIRT_SPEC_CTRL only for SSBD? Should that
On Mon, Dec 7, 2020 at 2:38 PM Babu Moger wrote:
>
> Newer AMD processors have a feature to virtualize the use of the
> SPEC_CTRL MSR. When supported, the SPEC_CTRL MSR is automatically
> virtualized and no longer requires hypervisor intervention.
>
> This feature is detected via CPUID function
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