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Groups > linux.kernel > #1739101
| From | Andi Kleen <ak@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v1 0/4] Enable LBR for the guest |
| Date | 2017-09-25 17:00 +0200 |
| Message-ID | <utD1v-7Jk-3@gated-at.bofh.it> (permalink) |
| References | <uttER-1un-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Sep 25, 2017 at 12:44:52PM +0800, Wei Wang wrote: > This patch series enables the Last Branch Recording feature for the > guest. Instead of trapping each LBR stack MSR access, the MSRs are > passthroughed to the guest. Those MSRs are switched (i.e. load and > saved) on VMExit and VMEntry. > > Test: > Try "perf record -b ./test_program" on guest. I don't see where you expose the PERF capabilities MSR? That's normally needed for LBR too to report the version number. -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
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