linux-kernel - [PATCH v2 054/144] KVM: selftests: Convert vmx_pmu_msrs_test away from VCPU

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Date:   Fri,  3 Jun 2022 00:42:01 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, Vitaly Kuznetsov <vkuznets@...hat.com>,
        Andrew Jones <drjones@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Oliver Upton <oupton@...gle.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 054/144] KVM: selftests: Convert vmx_pmu_msrs_test away
 from VCPU_ID

Convert vmx_pmu_msrs_test to use vm_create_with_one_vcpu() and pass
around a 'struct kvm_vcpu' object instead of using a global VCPU_ID.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 .../selftests/kvm/x86_64/vmx_pmu_caps_test.c  | 25 +++++++++----------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
index 97b7fd4a9a3d..63129ff5d003 100644
--- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
+++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
@@ -17,8 +17,6 @@
 #include "kvm_util.h"
 #include "vmx.h"
 
-#define VCPU_ID	      0
-
 #define X86_FEATURE_PDCM	(1<<15)
 #define PMU_CAP_FW_WRITES	(1ULL << 13)
 #define PMU_CAP_LBR_FMT		0x3f
@@ -61,6 +59,7 @@ int main(int argc, char *argv[])
 	struct kvm_cpuid_entry2 *entry_a_0;
 	bool pdcm_supported = false;
 	struct kvm_vm *vm;
+	struct kvm_vcpu *vcpu;
 	int ret;
 	union cpuid10_eax eax;
 	union perf_capabilities host_cap;
@@ -69,7 +68,7 @@ int main(int argc, char *argv[])
 	host_cap.capabilities &= (PMU_CAP_FW_WRITES | PMU_CAP_LBR_FMT);
 
 	/* Create VM */
-	vm = vm_create_default(VCPU_ID, 0, guest_code);
+	vm = vm_create_with_one_vcpu(&vcpu, guest_code);
 	cpuid = kvm_get_supported_cpuid();
 
 	if (kvm_get_cpuid_max_basic() >= 0xa) {
@@ -88,27 +87,27 @@ int main(int argc, char *argv[])
 	}
 
 	/* testcase 1, set capabilities when we have PDCM bit */
-	vcpu_set_cpuid(vm, VCPU_ID, cpuid);
-	vcpu_set_msr(vm, 0, MSR_IA32_PERF_CAPABILITIES, PMU_CAP_FW_WRITES);
+	vcpu_set_cpuid(vm, vcpu->id, cpuid);
+	vcpu_set_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES, PMU_CAP_FW_WRITES);
 
 	/* check capabilities can be retrieved with KVM_GET_MSR */
-	ASSERT_EQ(vcpu_get_msr(vm, VCPU_ID, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES);
+	ASSERT_EQ(vcpu_get_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES);
 
 	/* check whatever we write with KVM_SET_MSR is _not_ modified */
-	vcpu_run(vm, VCPU_ID);
-	ASSERT_EQ(vcpu_get_msr(vm, VCPU_ID, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES);
+	vcpu_run(vm, vcpu->id);
+	ASSERT_EQ(vcpu_get_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES);
 
 	/* testcase 2, check valid LBR formats are accepted */
-	vcpu_set_msr(vm, 0, MSR_IA32_PERF_CAPABILITIES, 0);
-	ASSERT_EQ(vcpu_get_msr(vm, VCPU_ID, MSR_IA32_PERF_CAPABILITIES), 0);
+	vcpu_set_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES, 0);
+	ASSERT_EQ(vcpu_get_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES), 0);
 
-	vcpu_set_msr(vm, 0, MSR_IA32_PERF_CAPABILITIES, host_cap.lbr_format);
-	ASSERT_EQ(vcpu_get_msr(vm, VCPU_ID, MSR_IA32_PERF_CAPABILITIES), (u64)host_cap.lbr_format);
+	vcpu_set_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES, host_cap.lbr_format);
+	ASSERT_EQ(vcpu_get_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES), (u64)host_cap.lbr_format);
 
 	/* testcase 3, check invalid LBR format is rejected */
 	/* Note, on Arch LBR capable platforms, LBR_FMT in perf capability msr is 0x3f,
 	 * to avoid the failure, use a true invalid format 0x30 for the test. */
-	ret = _vcpu_set_msr(vm, 0, MSR_IA32_PERF_CAPABILITIES, 0x30);
+	ret = _vcpu_set_msr(vm, vcpu->id, MSR_IA32_PERF_CAPABILITIES, 0x30);
 	TEST_ASSERT(ret == 0, "Bad PERF_CAPABILITIES didn't fail.");
 
 	printf("Completed perf capability tests.\n");
-- 
2.36.1.255.ge46751e96f-goog