Groups > linux.kernel > #1719346

Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls

From	Jim Mattson <jmattson@google.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls
Date	2017-08-24 17:50 +0200
Message-ID	<ui2yl-8q8-9@gated-at.bofh.it> (permalink)
References	<ui0wy-7c2-3@gated-at.bofh.it> <ui0wz-7c2-29@gated-at.bofh.it> <ui1Ch-7QZ-5@gated-at.bofh.it> <ui2f0-8jI-5@gated-at.bofh.it>
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Userspace can establish the value of the virtualized
IA32_VMX_PROCBASED_CTLS2 MSR via the KVM_SET_MSRS ioctl, which goes
through vms_set_vmx_msr. But maybe that's not important, since
features can only be disabled on that path.

On Thu, Aug 24, 2017 at 8:25 AM, Paolo Bonzini <pbonzini@redhat.com> wrote:
> On 24/08/2017 16:47, Jim Mattson wrote:
>>> Currently, secondary execution controls are divided in three groups:
>>>
>>> - static, depending mostly on the module arguments or the processor
>>>   (vmx_secondary_exec_control)
>>>
>>> - static, depending on CPUID (vmx_cpuid_update)
>> There should also be:
>>
>> - static, depending on guest VMX capability MSRs (vmx_set_vmx_msr)
>
> Can you explain what you mean?
>
> Paolo

Thread

[PATCH v7 0/4] Raise #UD and disable execution controls for more CPUID bits Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 15:40 +0200
  [PATCH 3/4] kvm: vmx: Raise #UD on unsupported RDSEED Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 15:40 +0200
    Re: [PATCH 3/4] kvm: vmx: Raise #UD on unsupported RDSEED David Hildenbrand <david@redhat.com> - 2017-08-24 19:50 +0200
  [PATCH 1/4] KVM: VMX: cache secondary exec controls Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 15:40 +0200
    Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls Jim Mattson <jmattson@google.com> - 2017-08-24 16:50 +0200
      Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 17:30 +0200
        Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls Jim Mattson <jmattson@google.com> - 2017-08-24 17:50 +0200
          Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 17:50 +0200
            Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 18:10 +0200
            Re: [PATCH 1/4] KVM: VMX: cache secondary exec controls Jim Mattson <jmattson@google.com> - 2017-08-24 18:10 +0200
  [PATCH 2/4] kvm: vmx: Raise #UD on unsupported RDRAND Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 15:40 +0200
    Re: [PATCH 2/4] kvm: vmx: Raise #UD on unsupported RDRAND David Hildenbrand <david@redhat.com> - 2017-08-24 19:50 +0200
  [PATCH 4/4] kvm: vmx: Raise #UD on unsupported XSAVES/XRSTORS Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 15:40 +0200
    Re: [PATCH 4/4] kvm: vmx: Raise #UD on unsupported XSAVES/XRSTORS Jim Mattson <jmattson@google.com> - 2017-08-24 17:00 +0200
      [PATCH v8 4/4] kvm: vmx: Raise #UD on unsupported XSAVES/XRSTORS Paolo Bonzini <pbonzini@redhat.com> - 2017-08-24 18:20 +0200
        Re: [PATCH v8 4/4] kvm: vmx: Raise #UD on unsupported XSAVES/XRSTORS Jim Mattson <jmattson@google.com> - 2017-08-24 22:50 +0200

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