On Wed, Dec 06, 2017 at 02:43:01PM +0300, Jan Dakinevich wrote: > w2k16 essentials fails to boot if underlying hypervisor lacks of support for > LBR MSRs. To workaround the issue, it suggessted to ignore these MSRs (but not > all). This is without any hyperv enablement? Meaning normal stock guest? > > The information, which MSRs are supported for specific platform is taken from > perf, it is the subject of the first patch. The second patch adds ignoring for > these MSRs to pmu_intel code of KVM. > > TODO: use MSR load/store areas to make full support of LBR debug. > > Jan Dakinevich (2): > perf/x86/intel: make reusable LBR initialization code > KVM: x86/vPMU: ignore access to LBR-related MSRs > > arch/x86/events/core.c | 8 +- > arch/x86/events/intel/core.c | 59 +++------ > arch/x86/events/intel/lbr.c | 272 +++++++++++++++++++++++++------------- > arch/x86/events/perf_event.h | 27 +--- > arch/x86/include/asm/kvm_host.h | 2 + > arch/x86/include/asm/perf_event.h | 11 ++ > arch/x86/kvm/pmu_intel.c | 33 +++++ > 7 files changed, 250 insertions(+), 162 deletions(-) > > -- > 2.1.4 >
