In 801e459a6f3a ("KVM: x86: Add a framework for supporting MSR-based features") a new ioctl was introduced, which with this sync of the kvm UAPI headers, makes 'perf trace' know about it: $ cd /tmp/build/perf/trace/beauty/generated/ioctl/ $ diff -u kvm_ioctl_array.c.old kvm_ioctl_array.c --- /tmp/kvm_ioctl_array.c 2018-03-05 11:55:38.409145056 -0300 +++ /tmp/build/perf/trace/beauty/generated/ioctl/kvm_ioctl_array.c 2018-03-05 11:56:17.456153501 -0300 @@ -6,6 +6,7 @@ [0x04] = "GET_VCPU_MMAP_SIZE", [0x05] = "GET_SUPPORTED_CPUID", [0x09] = "GET_EMULATED_CPUID", + [0x0a] = "GET_MSR_FEATURE_INDEX_LIST", [0x40] = "SET_MEMORY_REGION", [0x41] = "CREATE_VCPU", [0x42] = "GET_DIRTY_LOG", So when using 'perf trace -e ioctl' that will appear along with the others, like in this excerpt of a system wide session: 14.556 ( 0.006 ms): CPU 0/KVM/16077 ioctl(fd: 19<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 14.565 ( 0.006 ms): CPU 0/KVM/16077 ioctl(fd: 19<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) = 0 14.573 ( ): CPU 0/KVM/16077 ioctl(fd: 19<anon_inode:kvm-vcpu:0>, cmd: KVM_RUN) ... 34.075 ( 0.016 ms): gnome-shell/2192 ioctl(fd: 8</dev/dri/card0>, cmd: DRM_I915_GEM_BUSY, arg: 0x7ffe4e73e850) = 0 40.549 ( 0.012 ms): gnome-shell/2192 ioctl(fd: 8</dev/dri/card0>, cmd: DRM_I915_GEM_BUSY, arg: 0x7ffe4e73ece0) = 0 40.625 ( 0.005 ms): gnome-shell/2192 ioctl(fd: 8</dev/dri/card0>, cmd: DRM_I915_GEM_BUSY, arg: 0x7ffe4e73e940) = 0 40.632 ( 0.003 ms): gnome-shell/2192 ioctl(fd: 8</dev/dri/card0>, cmd: DRM_I915_GEM_MADVISE, arg: 0x7ffe4e73e9b0) = 0 This also silences the perf build header copy drift verifier: make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j4' parallel build Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
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| @@ -761,6 +761,7 @@ struct kvm_ppc_resize_hpt { · 760 unmodified lines | ||
| 761 | 761 | #define KVM_TRACE_PAUSE __KVM_DEPRECATED_MAIN_0x07 |
| 762 | 762 | #define KVM_TRACE_DISABLE __KVM_DEPRECATED_MAIN_0x08 |
| 763 | 763 | #define KVM_GET_EMULATED_CPUID _IOWR(KVMIO, 0x09, struct kvm_cpuid2) |
| 764 | +#define KVM_GET_MSR_FEATURE_INDEX_LIST _IOWR(KVMIO, 0x0a, struct kvm_msr_list) | |
| 764 | 765 | |
| 765 | 766 | /* |
| 766 | 767 | * Extension capability list. |
| @@ -934,6 +935,7 @@ struct kvm_ppc_resize_hpt { · 167 unmodified lines | ||
| 934 | 935 | #define KVM_CAP_S390_AIS_MIGRATION 150 |
| 935 | 936 | #define KVM_CAP_PPC_GET_CPU_CHAR 151 |
| 936 | 937 | #define KVM_CAP_S390_BPB 152 |
| 938 | +#define KVM_CAP_GET_MSR_FEATURES 153 | |
| 937 | 939 | |
| 938 | 940 | #ifdef KVM_CAP_IRQ_ROUTING |
| 939 | 941 | |