Re: [PATCH v14 11/11] selftests: kvm/x86: add test for pmu msr MSR_IA32_PERF_CAPABILITIES

On 01/02/21 07:01, Like Xu wrote: +uint64_t rdmsr_on_cpu(uint32_t reg) +{ + uint64_t data; + int fd; + char msr_file[64]; + + sprintf(msr_file, "/dev/cpu/%d/msr", 0); + fd = open(msr_file, O_RDONLY); + if (fd < 0) + exit(KSFT_SKIP); + + if

[PATCH v14 11/11] selftests: kvm/x86: add test for pmu msr MSR_IA32_PERF_CAPABILITIES

This test will check the effect of various CPUID settings on the MSR_IA32_PERF_CAPABILITIES MSR, check that whatever user space writes with KVM_SET_MSR is _not_ modified from the guest and can be retrieved with KVM_GET_MSR, and check that invalid LBR formats are rejected. Signed-off-by: Like Xu

[PATCH v14 11/11] selftests: kvm/x86: add test for pmu msr MSR_IA32_PERF_CAPABILITIES

This test will check the effect of various CPUID settings on the MSR_IA32_PERF_CAPABILITIES MSR, check that whatever user space writes with KVM_SET_MSR is _not_ modified from the guest and can be retrieved with KVM_GET_MSR, and check that invalid LBR formats are rejected. Signed-off-by: Like Xu