On Wed, 6 Dec 2017 10:06:48 -0500 Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote: > 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? > Yes, it is normal guest. No hyperv enlightenments were enabled, and "-cpu host" was specified in QEMU command line. > > > > 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 > > -- Best regards Jan Dakinevich
