Re: [PATCH v1 0/4] Enable LBR for the guest

From	Andi Kleen <ak@linux.intel.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v1 0/4] Enable LBR for the guest
Date	2017-09-26 19:00 +0200
Message-ID	<uu1nc-7hm-9@gated-at.bofh.it> (permalink)
References	<uttER-1un-3@gated-at.bofh.it> <utD1v-7Jk-3@gated-at.bofh.it> <utTJ0-2nL-13@gated-at.bofh.it>
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> On the other side, it seems that the (guest) kernel driver also works
> without
> the above being supported, should we change it to report error and stop
> using the PMU features when the check of the above two fails (at
> intel_pmu_init())?

You could add the extra check for the LBR code yes, although it already checks
if the LBR MSRs work, so in practice it's likely already covered.

-Andi

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[PATCH v1 0/4] Enable LBR for the guest Wei Wang <wei.w.wang@intel.com> - 2017-09-25 07:00 +0200
  [PATCH v1 2/4] KVM/vmx: auto switch MSR_IA32_DEBUGCTLMSR Wei Wang <wei.w.wang@intel.com> - 2017-09-25 07:00 +0200
    Re: [PATCH v1 2/4] KVM/vmx: auto switch MSR_IA32_DEBUGCTLMSR Paolo Bonzini <pbonzini@redhat.com> - 2017-09-25 14:00 +0200
  Re: [PATCH v1 0/4] Enable LBR for the guest Andi Kleen <ak@linux.intel.com> - 2017-09-25 17:00 +0200
    Re: [PATCH v1 0/4] Enable LBR for the guest Wei Wang <wei.w.wang@intel.com> - 2017-09-26 10:50 +0200
      Re: [PATCH v1 0/4] Enable LBR for the guest Andi Kleen <ak@linux.intel.com> - 2017-09-26 19:00 +0200

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