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| author | Sean Christopherson <seanjc@google.com> | 2022-06-14 22:06:59 +0200 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2022-07-14 03:14:22 +0200 |
| commit | 05c2b6e5facc4f04e4df0cfedbcc8943318ed983 (patch) | |
| tree | c0d695256cf4c37528c5dff36287fd18d84b610d /tools/testing/selftests | |
| parent | KVM: selftests: Use this_cpu_has() in CR4/CPUID sync test (diff) | |
| download | linux-05c2b6e5facc4f04e4df0cfedbcc8943318ed983.tar.xz linux-05c2b6e5facc4f04e4df0cfedbcc8943318ed983.zip | |
KVM: selftests: Use this_cpu_has() to detect SVM support in L1
Replace an evil open coded instance of querying CPUID from L1 with
this_cpu_has(X86_FEATURE_SVM).
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220614200707.3315957-35-seanjc@google.com
Diffstat (limited to 'tools/testing/selftests')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/svm_util.h | 13 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/smm_test.c | 4 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/state_test.c | 2 |
3 files changed, 3 insertions, 16 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 f48806d26989..a339b537a575 100644 --- a/tools/testing/selftests/kvm/include/x86_64/svm_util.h +++ b/tools/testing/selftests/kvm/include/x86_64/svm_util.h @@ -13,9 +13,6 @@ #include "svm.h" #include "processor.h" -#define CPUID_SVM_BIT 2 -#define CPUID_SVM BIT_ULL(CPUID_SVM_BIT) - #define SVM_EXIT_EXCP_BASE 0x040 #define SVM_EXIT_HLT 0x078 #define SVM_EXIT_MSR 0x07c @@ -52,16 +49,6 @@ 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); -static inline bool cpu_has_svm(void) -{ - u32 eax = 0x80000001, ecx; - - asm("cpuid" : - "=a" (eax), "=c" (ecx) : "0" (eax) : "ebx", "edx"); - - return ecx & CPUID_SVM; -} - int open_sev_dev_path_or_exit(void); #endif /* SELFTEST_KVM_SVM_UTILS_H */ diff --git a/tools/testing/selftests/kvm/x86_64/smm_test.c b/tools/testing/selftests/kvm/x86_64/smm_test.c index 17bb2397ea38..1f136a81858e 100644 --- a/tools/testing/selftests/kvm/x86_64/smm_test.c +++ b/tools/testing/selftests/kvm/x86_64/smm_test.c @@ -83,7 +83,7 @@ static void guest_code(void *arg) sync_with_host(4); if (arg) { - if (cpu_has_svm()) { + if (this_cpu_has(X86_FEATURE_SVM)) { generic_svm_setup(svm, l2_guest_code, &l2_guest_stack[L2_GUEST_STACK_SIZE]); } else { @@ -99,7 +99,7 @@ static void guest_code(void *arg) sync_with_host(7); - if (cpu_has_svm()) { + if (this_cpu_has(X86_FEATURE_SVM)) { run_guest(svm->vmcb, svm->vmcb_gpa); run_guest(svm->vmcb, svm->vmcb_gpa); } else { diff --git a/tools/testing/selftests/kvm/x86_64/state_test.c b/tools/testing/selftests/kvm/x86_64/state_test.c index 8ab81a3b561f..ea578971fb9f 100644 --- a/tools/testing/selftests/kvm/x86_64/state_test.c +++ b/tools/testing/selftests/kvm/x86_64/state_test.c @@ -142,7 +142,7 @@ static void __attribute__((__flatten__)) guest_code(void *arg) GUEST_SYNC(2); if (arg) { - if (cpu_has_svm()) + if (this_cpu_has(X86_FEATURE_SVM)) svm_l1_guest_code(arg); else vmx_l1_guest_code(arg); |