From: Sean Christopherson <seanjc@google.com>
To: Jinrong Liang <ljr.kernel@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Like Xu <likexu@tencent.com>,
David Matlack <dmatlack@google.com>,
Aaron Lewis <aaronlewis@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jinrong Liang <cloudliang@tencent.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 4/9] KVM: selftests: Test Intel PMU architectural events on gp counters
Date: Thu, 19 Oct 2023 16:39:04 -0700 [thread overview]
Message-ID: <ZTG-GGQ6Y7ODzq4K@google.com> (raw)
In-Reply-To: <20230911114347.85882-5-cloudliang@tencent.com>
On Mon, Sep 11, 2023, Jinrong Liang wrote:
> +static void test_intel_arch_events(void)
> +{
> + uint8_t idx;
> +
> + for (idx = 0; idx < NR_INTEL_ARCH_EVENTS; idx++) {
> + /*
> + * Given the stability of performance event recurrence, only
> + * these arch events are currently being tested:
> + *
> + * - Core cycle event (idx = 0)
> + * - Instruction retired event (idx = 1)
> + * - Reference cycles event (idx = 2)
> + * - Branch instruction retired event (idx = 5)
> + */
> + if (idx > INTEL_ARCH_INSTRUCTIONS_RETIRED &&
> + idx != INTEL_ARCH_BRANCHES_RETIRED)
> + continue;
> +
> + check_arch_event_is_unavl(idx);
Rather than completely skip the event, just don't check the counter. That way
the test still verifies that it can program the event, it's only the result that
isn't stable enough to assert on.
next prev parent reply other threads:[~2023-10-19 23:39 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-11 11:43 [PATCH v4 0/9] KVM: selftests: Test the consistency of the PMU's CPUID and its features Jinrong Liang
2023-09-11 11:43 ` [PATCH v4 1/9] KVM: selftests: Add vcpu_set_cpuid_property() to set properties Jinrong Liang
2023-10-19 23:28 ` Sean Christopherson
2023-09-11 11:43 ` [PATCH v4 2/9] KVM: selftests: Extend this_pmu_has() and kvm_pmu_has() to check arch events Jinrong Liang
2023-10-19 23:31 ` Sean Christopherson
2023-09-11 11:43 ` [PATCH v4 3/9] KVM: selftests: Add pmu.h for PMU events and common masks Jinrong Liang
2023-10-19 23:38 ` Sean Christopherson
2023-09-11 11:43 ` [PATCH v4 4/9] KVM: selftests: Test Intel PMU architectural events on gp counters Jinrong Liang
2023-10-19 23:39 ` Sean Christopherson [this message]
2023-09-11 11:43 ` [PATCH v4 5/9] KVM: selftests: Test Intel PMU architectural events on fixed counters Jinrong Liang
2023-10-19 23:55 ` Sean Christopherson
2023-09-11 11:43 ` [PATCH v4 6/9] KVM: selftests: Test consistency of CPUID with num of gp counters Jinrong Liang
2023-10-20 18:08 ` Sean Christopherson
2023-09-11 11:43 ` [PATCH v4 7/9] KVM: selftests: Test consistency of CPUID with num of fixed counters Jinrong Liang
2023-09-11 11:43 ` [PATCH v4 8/9] KVM: selftests: Test Intel supported fixed counters bit mask Jinrong Liang
2023-10-20 0:18 ` Sean Christopherson
2023-10-20 19:06 ` Sean Christopherson
2023-10-21 9:58 ` Jinrong Liang
2023-09-11 11:43 ` [PATCH v4 9/9] KVM: selftests: Test consistency of PMU MSRs with Intel PMU version Jinrong Liang
2023-10-11 8:32 ` [PATCH v4 0/9] KVM: selftests: Test the consistency of the PMU's CPUID and its features Jinrong Liang
2023-10-20 0:28 ` Sean Christopherson
2023-10-20 9:11 ` Jinrong Liang
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