Re: [PATCH v6 4/7] kvm: x86/pmu: Introduce masked events to the pmu event filter

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On 17/12/2022 2:31 am, Aaron Lewis wrote:
On Fri, Dec 16, 2022 at 9:55 AM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:

On Thu, Dec 15, 2022, Like Xu wrote:
On 22/10/2022 4:51 am, Aaron Lewis wrote:
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1178,6 +1178,7 @@ struct kvm_ppc_resize_hpt {
   #define KVM_CAP_S390_ZPCI_OP 221
   #define KVM_CAP_S390_CPU_TOPOLOGY 222
   #define KVM_CAP_DIRTY_LOG_RING_ACQ_REL 223
+#define KVM_CAP_PMU_EVENT_MASKED_EVENTS 224

I presume that the linux/tools code in google's internal tree
can directly refer to the various definitions in the kernel headers.

Otherwise, how did the newly added selftest get even compiled ?

Magic fairy dust, a.k.a. `make headers_install`.  KVM selftests don't actually
get anything from tools/include/uapi/ or tools/arch/<arch>/include/uapi/, the
only reason the KVM headers are copied there are for perf usage.  And if it weren't
for perf, I'd delete them from tools/, because keeping them in sync is a pain.

LoL, how ignorant I am and thank you. Please review the below fix to see if it helps.
https://lore.kernel.org/kvm/20221219095540.52208-1-likexu@xxxxxxxxxxx/


To get tools' uapi copies, KVM selftests would need to change its include paths
or change a bunch of #includes to do <uapi/...>.

Similar errors include "union cpuid10_eax" from perf_event.h

I don't follow this one.  Commit bef9a701f3eb ("selftests: kvm/x86: Add test for
KVM_SET_PMU_EVENT_FILTER") added the union definition in pmu_event_filter_test.c

That's been replaced since posting.  The function num_gp_counters()
needs to be placed with
kvm_cpu_property(X86_PROPERTY_PMU_NR_GP_COUNTERS).  I can update and
repost.


Yeah, please squeeze out a little time to spin a rebased version.



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