linux-kernel - [PATCH 1/7] KVM: selftests: Replace int with uint32

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Date:   Fri, 14 Apr 2023 19:00:50 +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 1/7] KVM: selftests: Replace int with uint32_t for nevents

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

Defined as type __u32, the nevents field in kvm_pmu_event_filter
can only accept positive values within a specific range. Therefore,
replacing int with uint32_t for nevents ensures consistency and
readability in the code. This change has been tested and verified
to work correctly with all relevant code.

Signed-off-by: Jinrong Liang <cloudliang@...cent.com>
---
 .../selftests/kvm/x86_64/pmu_event_filter_test.c     | 12 ++++++------
 1 file changed, 6 insertions(+), 6 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 1f60dfae69e0..c0521fc9e8f6 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
@@ -194,7 +194,7 @@ static struct kvm_pmu_event_filter *alloc_pmu_event_filter(uint32_t nevents)
 
 
 static struct kvm_pmu_event_filter *
-create_pmu_event_filter(const uint64_t event_list[], int nevents,
+create_pmu_event_filter(const uint64_t event_list[], uint32_t nevents,
 			uint32_t action, uint32_t flags)
 {
 	struct kvm_pmu_event_filter *f;
@@ -648,7 +648,7 @@ const struct masked_events_test test_cases[] = {
 };
 
 static int append_test_events(const struct masked_events_test *test,
-			      uint64_t *events, int nevents)
+			      uint64_t *events, uint32_t nevents)
 {
 	const uint64_t *evts;
 	int i;
@@ -670,7 +670,7 @@ static bool bool_eq(bool a, bool b)
 }
 
 static void run_masked_events_tests(struct kvm_vcpu *vcpu, uint64_t *events,
-				    int nevents)
+				    uint32_t nevents)
 {
 	int ntests = ARRAY_SIZE(test_cases);
 	struct perf_counter c;
@@ -695,7 +695,7 @@ static void run_masked_events_tests(struct kvm_vcpu *vcpu, uint64_t *events,
 	}
 }
 
-static void add_dummy_events(uint64_t *events, int nevents)
+static void add_dummy_events(uint64_t *events, uint32_t nevents)
 {
 	int i;
 
@@ -714,7 +714,7 @@ static void add_dummy_events(uint64_t *events, int nevents)
 
 static void test_masked_events(struct kvm_vcpu *vcpu)
 {
-	int nevents = MAX_FILTER_EVENTS - MAX_TEST_EVENTS;
+	uint32_t nevents = MAX_FILTER_EVENTS - MAX_TEST_EVENTS;
 	uint64_t events[MAX_FILTER_EVENTS];
 
 	/* Run the test cases against a sparse PMU event filter. */
@@ -726,7 +726,7 @@ static void test_masked_events(struct kvm_vcpu *vcpu)
 }
 
 static int run_filter_test(struct kvm_vcpu *vcpu, const uint64_t *events,
-			   int nevents, uint32_t flags)
+			   uint32_t nevents, uint32_t flags)
 {
 	struct kvm_pmu_event_filter *f;
 	int r;
-- 
2.31.1