[PATCH 05/42] KVM: selftests: Use kvm_cpu_has() for nested SVM checks

From: Sean Christopherson
Date: Fri Jun 03 2022 - 21:21:28 EST

Use kvm_cpu_has() to check for nested SVM support, and drop the helpers
now that their functionality is trivial to implement.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
.../testing/selftests/kvm/include/x86_64/svm_util.h | 2 --
tools/testing/selftests/kvm/lib/x86_64/svm.c | 13 -------------
.../testing/selftests/kvm/x86_64/hyperv_svm_test.c | 2 +-
tools/testing/selftests/kvm/x86_64/smm_test.c | 2 +-
tools/testing/selftests/kvm/x86_64/state_test.c | 2 +-
.../testing/selftests/kvm/x86_64/svm_int_ctl_test.c | 2 +-
.../kvm/x86_64/svm_nested_soft_inject_test.c | 2 +-
.../testing/selftests/kvm/x86_64/svm_vmcall_test.c | 2 +-
8 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/svm_util.h b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
index 136ba6a5d027..f48806d26989 100644
--- a/tools/testing/selftests/kvm/include/x86_64/svm_util.h
+++ b/tools/testing/selftests/kvm/include/x86_64/svm_util.h
@@ -51,8 +51,6 @@ struct svm_test_data {
struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva);
void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp);
void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa);
-bool nested_svm_supported(void);
-void nested_svm_check_supported(void);

static inline bool cpu_has_svm(void)
{
diff --git a/tools/testing/selftests/kvm/lib/x86_64/svm.c b/tools/testing/selftests/kvm/lib/x86_64/svm.c
index 37e9c0a923e0..6d445886e16c 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/svm.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/svm.c
@@ -164,19 +164,6 @@ void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa)
: "r15", "memory");
}

-bool nested_svm_supported(void)
-{
- struct kvm_cpuid_entry2 *entry =
- kvm_get_supported_cpuid_entry(0x80000001);
-
- return entry->ecx & CPUID_SVM;
-}
-
-void nested_svm_check_supported(void)
-{
- TEST_REQUIRE(nested_svm_supported());
-}
-
/*
* Open SEV_DEV_PATH if available, otherwise exit the entire program.
*
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
index c5cd9835dbd6..ea507510a62f 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
@@ -127,7 +127,7 @@ int main(int argc, char *argv[])
struct ucall uc;
int stage;

- TEST_REQUIRE(nested_svm_supported());
+ TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));

/* Create VM */
vm = vm_create_with_one_vcpu(&vcpu, guest_code);
diff --git a/tools/testing/selftests/kvm/x86_64/smm_test.c b/tools/testing/selftests/kvm/x86_64/smm_test.c
index e89139ce68dd..6b8108bdcead 100644
--- a/tools/testing/selftests/kvm/x86_64/smm_test.c
+++ b/tools/testing/selftests/kvm/x86_64/smm_test.c
@@ -154,7 +154,7 @@ int main(int argc, char *argv[])
vcpu_set_msr(vcpu, MSR_IA32_SMBASE, SMRAM_GPA);

if (kvm_check_cap(KVM_CAP_NESTED_STATE)) {
- if (nested_svm_supported())
+ if (kvm_cpu_has(X86_FEATURE_SVM))
vcpu_alloc_svm(vm, &nested_gva);
else if (nested_vmx_supported())
vcpu_alloc_vmx(vm, &nested_gva);
diff --git a/tools/testing/selftests/kvm/x86_64/state_test.c b/tools/testing/selftests/kvm/x86_64/state_test.c
index ea878c963065..fe110ce31106 100644
--- a/tools/testing/selftests/kvm/x86_64/state_test.c
+++ b/tools/testing/selftests/kvm/x86_64/state_test.c
@@ -170,7 +170,7 @@ int main(int argc, char *argv[])
vcpu_regs_get(vcpu, &regs1);

if (kvm_check_cap(KVM_CAP_NESTED_STATE)) {
- if (nested_svm_supported())
+ if (kvm_cpu_has(X86_FEATURE_SVM))
vcpu_alloc_svm(vm, &nested_gva);
else if (nested_vmx_supported())
vcpu_alloc_vmx(vm, &nested_gva);
diff --git a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c
index 9c68a47b69e1..dc32c347281a 100644
--- a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c
+++ b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c
@@ -90,7 +90,7 @@ int main(int argc, char *argv[])
struct kvm_vm *vm;
struct ucall uc;

- nested_svm_check_supported();
+ TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));

vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code);

diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c
index 051f70167074..3c21b997fe3a 100644
--- a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c
+++ b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c
@@ -200,7 +200,7 @@ int main(int argc, char *argv[])
/* Tell stdout not to buffer its content */
setbuf(stdout, NULL);

- nested_svm_check_supported();
+ TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));

cpuid = kvm_get_supported_cpuid_entry(0x8000000a);
TEST_ASSERT(cpuid->edx & CPUID_NRIPS,
diff --git a/tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c b/tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c
index e6d7191866a5..46ce1bda6599 100644
--- a/tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c
+++ b/tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c
@@ -39,7 +39,7 @@ int main(int argc, char *argv[])
vm_vaddr_t svm_gva;
struct kvm_vm *vm;

- nested_svm_check_supported();
+ TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));

vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code);

--
2.36.1.255.ge46751e96f-goog