diff options
| -rw-r--r-- | tools/testing/selftests/kvm/include/kvm_util.h | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/lib/kvm_util.c | 26 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c | 87 |
3 files changed, 77 insertions, 38 deletions
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index 7d29aa786959..b2c1364c0402 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -114,6 +114,8 @@ void vcpu_ioctl(struct kvm_vm *vm, uint32_t vcpuid, unsigned long ioctl, int _vcpu_ioctl(struct kvm_vm *vm, uint32_t vcpuid, unsigned long ioctl, void *arg); void vm_ioctl(struct kvm_vm *vm, unsigned long ioctl, void *arg); +void kvm_ioctl(struct kvm_vm *vm, unsigned long ioctl, void *arg); +int _kvm_ioctl(struct kvm_vm *vm, unsigned long ioctl, void *arg); void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags); void vm_mem_region_move(struct kvm_vm *vm, uint32_t slot, uint64_t new_gpa); void vm_mem_region_delete(struct kvm_vm *vm, uint32_t slot); diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 126c6727a6b0..ef2114e1b7ad 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -1583,6 +1583,32 @@ void vm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg) } /* + * KVM system ioctl + * + * Input Args: + * vm - Virtual Machine + * cmd - Ioctl number + * arg - Argument to pass to the ioctl + * + * Return: None + * + * Issues an arbitrary ioctl on a KVM fd. + */ +void kvm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg) +{ + int ret; + + ret = ioctl(vm->kvm_fd, cmd, arg); + TEST_ASSERT(ret == 0, "KVM ioctl %lu failed, rc: %i errno: %i (%s)", + cmd, ret, errno, strerror(errno)); +} + +int _kvm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg) +{ + return ioctl(vm->kvm_fd, cmd, arg); +} + +/* * VM Dump * * Input Args: diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c b/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c index 745b708c2d3b..88a595b7fbdd 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c @@ -46,19 +46,19 @@ static bool smt_possible(void) } static void test_hv_cpuid(struct kvm_cpuid2 *hv_cpuid_entries, - bool evmcs_enabled) + bool evmcs_expected) { int i; int nent = 9; u32 test_val; - if (evmcs_enabled) + if (evmcs_expected) nent += 1; /* 0x4000000A */ TEST_ASSERT(hv_cpuid_entries->nent == nent, "KVM_GET_SUPPORTED_HV_CPUID should return %d entries" " with evmcs=%d (returned %d)", - nent, evmcs_enabled, hv_cpuid_entries->nent); + nent, evmcs_expected, hv_cpuid_entries->nent); for (i = 0; i < hv_cpuid_entries->nent; i++) { struct kvm_cpuid_entry2 *entry = &hv_cpuid_entries->entries[i]; @@ -68,7 +68,7 @@ static void test_hv_cpuid(struct kvm_cpuid2 *hv_cpuid_entries, "function %x is our of supported range", entry->function); - TEST_ASSERT(evmcs_enabled || (entry->function != 0x4000000A), + TEST_ASSERT(evmcs_expected || (entry->function != 0x4000000A), "0x4000000A leaf should not be reported"); TEST_ASSERT(entry->index == 0, @@ -87,7 +87,7 @@ static void test_hv_cpuid(struct kvm_cpuid2 *hv_cpuid_entries, TEST_ASSERT(entry->eax == test_val, "Wrong max leaf report in 0x40000000.EAX: %x" " (evmcs=%d)", - entry->eax, evmcs_enabled + entry->eax, evmcs_expected ); break; case 0x40000004: @@ -110,20 +110,23 @@ static void test_hv_cpuid(struct kvm_cpuid2 *hv_cpuid_entries, } -void test_hv_cpuid_e2big(struct kvm_vm *vm) +void test_hv_cpuid_e2big(struct kvm_vm *vm, bool system) { static struct kvm_cpuid2 cpuid = {.nent = 0}; int ret; - ret = _vcpu_ioctl(vm, VCPU_ID, KVM_GET_SUPPORTED_HV_CPUID, &cpuid); + if (!system) + ret = _vcpu_ioctl(vm, VCPU_ID, KVM_GET_SUPPORTED_HV_CPUID, &cpuid); + else + ret = _kvm_ioctl(vm, KVM_GET_SUPPORTED_HV_CPUID, &cpuid); TEST_ASSERT(ret == -1 && errno == E2BIG, - "KVM_GET_SUPPORTED_HV_CPUID didn't fail with -E2BIG when" - " it should have: %d %d", ret, errno); + "%s KVM_GET_SUPPORTED_HV_CPUID didn't fail with -E2BIG when" + " it should have: %d %d", system ? "KVM" : "vCPU", ret, errno); } -struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(struct kvm_vm *vm) +struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(struct kvm_vm *vm, bool system) { int nent = 20; /* should be enough */ static struct kvm_cpuid2 *cpuid; @@ -137,7 +140,10 @@ struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(struct kvm_vm *vm) cpuid->nent = nent; - vcpu_ioctl(vm, VCPU_ID, KVM_GET_SUPPORTED_HV_CPUID, cpuid); + if (!system) + vcpu_ioctl(vm, VCPU_ID, KVM_GET_SUPPORTED_HV_CPUID, cpuid); + else + kvm_ioctl(vm, KVM_GET_SUPPORTED_HV_CPUID, cpuid); return cpuid; } @@ -146,45 +152,50 @@ struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(struct kvm_vm *vm) int main(int argc, char *argv[]) { struct kvm_vm *vm; - int rv, stage; struct kvm_cpuid2 *hv_cpuid_entries; - bool evmcs_enabled; /* Tell stdout not to buffer its content */ setbuf(stdout, NULL); - rv = kvm_check_cap(KVM_CAP_HYPERV_CPUID); - if (!rv) { + if (!kvm_check_cap(KVM_CAP_HYPERV_CPUID)) { print_skip("KVM_CAP_HYPERV_CPUID not supported"); exit(KSFT_SKIP); } - for (stage = 0; stage < 3; stage++) { - evmcs_enabled = false; + vm = vm_create_default(VCPU_ID, 0, guest_code); - vm = vm_create_default(VCPU_ID, 0, guest_code); - switch (stage) { - case 0: - test_hv_cpuid_e2big(vm); - continue; - case 1: - break; - case 2: - if (!nested_vmx_supported() || - !kvm_check_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS)) { - print_skip("Enlightened VMCS is unsupported"); - continue; - } - vcpu_enable_evmcs(vm, VCPU_ID); - evmcs_enabled = true; - break; - } + /* Test vCPU ioctl version */ + test_hv_cpuid_e2big(vm, false); + + hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, false); + test_hv_cpuid(hv_cpuid_entries, false); + free(hv_cpuid_entries); - hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm); - test_hv_cpuid(hv_cpuid_entries, evmcs_enabled); - free(hv_cpuid_entries); - kvm_vm_free(vm); + if (!nested_vmx_supported() || + !kvm_check_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS)) { + print_skip("Enlightened VMCS is unsupported"); + goto do_sys; } + vcpu_enable_evmcs(vm, VCPU_ID); + hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, false); + test_hv_cpuid(hv_cpuid_entries, true); + free(hv_cpuid_entries); + +do_sys: + /* Test system ioctl version */ + if (!kvm_check_cap(KVM_CAP_SYS_HYPERV_CPUID)) { + print_skip("KVM_CAP_SYS_HYPERV_CPUID not supported"); + goto out; + } + + test_hv_cpuid_e2big(vm, true); + + hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, true); + test_hv_cpuid(hv_cpuid_entries, nested_vmx_supported()); + free(hv_cpuid_entries); + +out: + kvm_vm_free(vm); return 0; } |