linux-kernel - [PATCH 2/7] KVM: selftests: Apply create_pmu_event

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Date:   Fri, 14 Apr 2023 19:00:51 +0800
From:   Jinrong Liang <ljr.kernel@...il.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Like Xu <like.xu.linux@...il.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Shuah Khan <shuah@...nel.org>,
        Aaron Lewis <aaronlewis@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Vishal Annapurve <vannapurve@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jinrong Liang <cloudliang@...cent.com>,
        linux-kselftest@...r.kernel.org, linux-doc@...r.kernel.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/7] KVM: selftests: Apply create_pmu_event_filter() to fixed ctrs

From: Jinrong Liang <cloudliang@...cent.com>

Add fixed_counter_bitmap to the create_pmu_event_filter() to
support the use of the same creator to control the use of guest
fixed counters.

No functional change intended.

Signed-off-by: Jinrong Liang <cloudliang@...cent.com>
---
 .../kvm/x86_64/pmu_event_filter_test.c        | 31 ++++++++++++-------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
index c0521fc9e8f6..4e87eea6986b 100644
--- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
+++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
@@ -192,19 +192,22 @@ static struct kvm_pmu_event_filter *alloc_pmu_event_filter(uint32_t nevents)
 	return f;
 }
 
-
 static struct kvm_pmu_event_filter *
 create_pmu_event_filter(const uint64_t event_list[], uint32_t nevents,
-			uint32_t action, uint32_t flags)
+			uint32_t action, uint32_t flags,
+			uint32_t fixed_counter_bitmap)
 {
 	struct kvm_pmu_event_filter *f;
 	int i;
 
 	f = alloc_pmu_event_filter(nevents);
 	f->action = action;
+	f->fixed_counter_bitmap = fixed_counter_bitmap;
 	f->flags = flags;
-	for (i = 0; i < nevents; i++)
-		f->events[i] = event_list[i];
+	if (f->nevents) {
+		for (i = 0; i < f->nevents; i++)
+			f->events[i] = event_list[i];
+	}
 
 	return f;
 }
@@ -213,7 +216,7 @@ static struct kvm_pmu_event_filter *event_filter(uint32_t action)
 {
 	return create_pmu_event_filter(event_list,
 				       ARRAY_SIZE(event_list),
-				       action, 0);
+				       action, 0, 0);
 }
 
 /*
@@ -260,7 +263,7 @@ static void test_amd_deny_list(struct kvm_vcpu *vcpu)
 	struct kvm_pmu_event_filter *f;
 	uint64_t count;
 
-	f = create_pmu_event_filter(&event, 1, KVM_PMU_EVENT_DENY, 0);
+	f = create_pmu_event_filter(&event, 1, KVM_PMU_EVENT_DENY, 0, 0);
 	count = test_with_filter(vcpu, f);
 
 	free(f);
@@ -544,7 +547,7 @@ static struct perf_counter run_masked_events_test(struct kvm_vcpu *vcpu,
 
 	f = create_pmu_event_filter(masked_events, nmasked_events,
 				    KVM_PMU_EVENT_ALLOW,
-				    KVM_PMU_EVENT_FLAG_MASKED_EVENTS);
+				    KVM_PMU_EVENT_FLAG_MASKED_EVENTS, 0);
 	r.raw = test_with_filter(vcpu, f);
 	free(f);
 
@@ -726,12 +729,14 @@ static void test_masked_events(struct kvm_vcpu *vcpu)
 }
 
 static int run_filter_test(struct kvm_vcpu *vcpu, const uint64_t *events,
-			   uint32_t nevents, uint32_t flags)
+			   uint32_t nevents, uint32_t flags, uint32_t action,
+			   uint32_t fixed_counter_bitmap)
 {
 	struct kvm_pmu_event_filter *f;
 	int r;
 
-	f = create_pmu_event_filter(events, nevents, KVM_PMU_EVENT_ALLOW, flags);
+	f = create_pmu_event_filter(events, nevents, action, flags,
+				    fixed_counter_bitmap);
 	r = __vm_ioctl(vcpu->vm, KVM_SET_PMU_EVENT_FILTER, f);
 	free(f);
 
@@ -747,14 +752,16 @@ static void test_filter_ioctl(struct kvm_vcpu *vcpu)
 	 * Unfortunately having invalid bits set in event data is expected to
 	 * pass when flags == 0 (bits other than eventsel+umask).
 	 */
-	r = run_filter_test(vcpu, &e, 1, 0);
+	r = run_filter_test(vcpu, &e, 1, 0, KVM_PMU_EVENT_ALLOW, 0);
 	TEST_ASSERT(r == 0, "Valid PMU Event Filter is failing");
 
-	r = run_filter_test(vcpu, &e, 1, KVM_PMU_EVENT_FLAG_MASKED_EVENTS);
+	r = run_filter_test(vcpu, &e, 1, KVM_PMU_EVENT_FLAG_MASKED_EVENTS,
+			    KVM_PMU_EVENT_ALLOW, 0);
 	TEST_ASSERT(r != 0, "Invalid PMU Event Filter is expected to fail");
 
 	e = KVM_PMU_ENCODE_MASKED_ENTRY(0xff, 0xff, 0xff, 0xf);
-	r = run_filter_test(vcpu, &e, 1, KVM_PMU_EVENT_FLAG_MASKED_EVENTS);
+	r = run_filter_test(vcpu, &e, 1, KVM_PMU_EVENT_FLAG_MASKED_EVENTS,
+			    KVM_PMU_EVENT_ALLOW, 0);
 	TEST_ASSERT(r == 0, "Valid PMU Event Filter is failing");
 }
 
-- 
2.31.1