kindly ping, :) On Tue, 2 Aug 2022 at 19:16, Like Xu <like.xu.linux@xxxxxxxxx> wrote: > > To catch up on the first -rc, ping beggarly and guiltily. > > On 21/7/2022 6:35 pm, Like Xu wrote: > > Good well-designed tests can help us find more bugs, especially when > > the test steps differ from the Linux kernel behaviour in terms of the > > timing of access to virtualized hw resources. > > > > A new guest PEBS kvm-unit-test constructs a number of typical and > > corner use cases to demonstrate how fragile the earlier PEBS > > enabling patch set is. I prefer to reveal these flaws and fix them > > myself before we receive complaints from projects that rely on it. > > > > In this patch series, there is one small optimization (006), one hardware > > surprise (002), and most of these fixes have stepped on my little toes. > > > > Please feel free to run tests, add more or share comments. > > > > Previous: > > https://lore.kernel.org/kvm/20220713122507.29236-1-likexu@xxxxxxxxxxx/ > > > > V1 -> V2 Changelog: > > - For 3/7, use "hw_idx > -1" and add comment; (Sean) > > - For 4/7, refine commit message and add comment; (Sean) > > - For 6/7, inline reprogram_counter() and restrict pmc->current_config; > > > > Like Xu (7): > > perf/x86/core: Update x86_pmu.pebs_capable for ICELAKE_{X,D} > > perf/x86/core: Completely disable guest PEBS via guest's global_ctrl > > KVM: x86/pmu: Avoid setting BIT_ULL(-1) to pmu->host_cross_mapped_mask > > KVM: x86/pmu: Don't generate PEBS records for emulated instructions > > KVM: x86/pmu: Avoid using PEBS perf_events for normal counters > > KVM: x86/pmu: Defer reprogram_counter() to kvm_pmu_handle_event() > > KVM: x86/pmu: Defer counter emulated overflow via pmc->stale_counter > > > > arch/x86/events/intel/core.c | 4 ++- > > arch/x86/include/asm/kvm_host.h | 6 +++-- > > arch/x86/kvm/pmu.c | 47 +++++++++++++++++++++------------ > > arch/x86/kvm/pmu.h | 6 ++++- > > arch/x86/kvm/svm/pmu.c | 2 +- > > arch/x86/kvm/vmx/pmu_intel.c | 30 ++++++++++----------- > > 6 files changed, 58 insertions(+), 37 deletions(-) > >
