diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c b/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c deleted file mode 100644 index 4f5881d4ef66..000000000000 --- a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c +++ /dev/null @@ -1,172 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Test for x86 KVM_CAP_HYPERV_CPUID - * - * Copyright (C) 2018, Red Hat, Inc. - * - * This work is licensed under the terms of the GNU GPL, version 2. - * - */ -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/ioctl.h> - -#include "test_util.h" -#include "kvm_util.h" -#include "processor.h" -#include "vmx.h" - -static void guest_code(void) -{ -} - -static bool smt_possible(void) -{ - char buf[16]; - FILE *f; - bool res = true; - - f = fopen("/sys/devices/system/cpu/smt/control", "r"); - if (f) { - if (fread(buf, sizeof(*buf), sizeof(buf), f) > 0) { - if (!strncmp(buf, "forceoff", 8) || - !strncmp(buf, "notsupported", 12)) - res = false; - } - fclose(f); - } - - return res; -} - -static void test_hv_cpuid(const struct kvm_cpuid2 *hv_cpuid_entries, - bool evmcs_expected) -{ - int i; - int nent_expected = 10; - u32 test_val; - - TEST_ASSERT(hv_cpuid_entries->nent == nent_expected, - "KVM_GET_SUPPORTED_HV_CPUID should return %d entries" - " (returned %d)", - nent_expected, hv_cpuid_entries->nent); - - for (i = 0; i < hv_cpuid_entries->nent; i++) { - const struct kvm_cpuid_entry2 *entry = &hv_cpuid_entries->entries[i]; - - TEST_ASSERT((entry->function >= 0x40000000) && - (entry->function <= 0x40000082), - "function %x is our of supported range", - entry->function); - - TEST_ASSERT(entry->index == 0, - ".index field should be zero"); - - TEST_ASSERT(entry->flags == 0, - ".flags field should be zero"); - - TEST_ASSERT(!entry->padding[0] && !entry->padding[1] && - !entry->padding[2], "padding should be zero"); - - switch (entry->function) { - case 0x40000000: - test_val = 0x40000082; - - TEST_ASSERT(entry->eax == test_val, - "Wrong max leaf report in 0x40000000.EAX: %x" - " (evmcs=%d)", - entry->eax, evmcs_expected - ); - break; - case 0x40000004: - test_val = entry->eax & (1UL << 18); - - TEST_ASSERT(!!test_val == !smt_possible(), - "NoNonArchitecturalCoreSharing bit" - " doesn't reflect SMT setting"); - break; - case 0x4000000A: - TEST_ASSERT(entry->eax & (1UL << 19), - "Enlightened MSR-Bitmap should always be supported" - " 0x40000000.EAX: %x", entry->eax); - if (evmcs_expected) - TEST_ASSERT((entry->eax & 0xffff) == 0x101, - "Supported Enlightened VMCS version range is supposed to be 1:1" - " 0x40000000.EAX: %x", entry->eax); - - break; - default: - break; - - } - /* - * If needed for debug: - * fprintf(stdout, - * "CPUID%lx EAX=0x%lx EBX=0x%lx ECX=0x%lx EDX=0x%lx\n", - * entry->function, entry->eax, entry->ebx, entry->ecx, - * entry->edx); - */ - } -} - -void test_hv_cpuid_e2big(struct kvm_vm *vm, struct kvm_vcpu *vcpu) -{ - static struct kvm_cpuid2 cpuid = {.nent = 0}; - int ret; - - if (vcpu) - ret = __vcpu_ioctl(vcpu, KVM_GET_SUPPORTED_HV_CPUID, &cpuid); - else - ret = __kvm_ioctl(vm->kvm_fd, KVM_GET_SUPPORTED_HV_CPUID, &cpuid); - - TEST_ASSERT(ret == -1 && errno == E2BIG, - "%s KVM_GET_SUPPORTED_HV_CPUID didn't fail with -E2BIG when" - " it should have: %d %d", !vcpu ? "KVM" : "vCPU", ret, errno); -} - -int main(int argc, char *argv[]) -{ - struct kvm_vm *vm; - const struct kvm_cpuid2 *hv_cpuid_entries; - struct kvm_vcpu *vcpu; - - TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_CPUID)); - - vm = vm_create_with_one_vcpu(&vcpu, guest_code); - - /* Test vCPU ioctl version */ - test_hv_cpuid_e2big(vm, vcpu); - - hv_cpuid_entries = vcpu_get_supported_hv_cpuid(vcpu); - test_hv_cpuid(hv_cpuid_entries, false); - free((void *)hv_cpuid_entries); - - if (!kvm_cpu_has(X86_FEATURE_VMX) || - !kvm_has_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS)) { - print_skip("Enlightened VMCS is unsupported"); - goto do_sys; - } - vcpu_enable_evmcs(vcpu); - hv_cpuid_entries = vcpu_get_supported_hv_cpuid(vcpu); - test_hv_cpuid(hv_cpuid_entries, true); - free((void *)hv_cpuid_entries); - -do_sys: - /* Test system ioctl version */ - if (!kvm_has_cap(KVM_CAP_SYS_HYPERV_CPUID)) { - print_skip("KVM_CAP_SYS_HYPERV_CPUID not supported"); - goto out; - } - - test_hv_cpuid_e2big(vm, NULL); - - hv_cpuid_entries = kvm_get_supported_hv_cpuid(); - test_hv_cpuid(hv_cpuid_entries, kvm_cpu_has(X86_FEATURE_VMX)); - -out: - kvm_vm_free(vm); - - return 0; -} |