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Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c')
-rw-r--r--tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c190
1 files changed, 0 insertions, 190 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 745b708c2d3b..000000000000
--- a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c
+++ /dev/null
@@ -1,190 +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.
- *
- */
-
-#define _GNU_SOURCE /* for program_invocation_short_name */
-#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"
-
-#define VCPU_ID 0
-
-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(struct kvm_cpuid2 *hv_cpuid_entries,
- bool evmcs_enabled)
-{
- int i;
- int nent = 9;
- u32 test_val;
-
- if (evmcs_enabled)
- 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);
-
- for (i = 0; i < hv_cpuid_entries->nent; i++) {
- 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(evmcs_enabled || (entry->function != 0x4000000A),
- "0x4000000A leaf should not be reported");
-
- 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_enabled
- );
- break;
- case 0x40000004:
- test_val = entry->eax & (1UL << 18);
-
- TEST_ASSERT(!!test_val == !smt_possible(),
- "NoNonArchitecturalCoreSharing bit"
- " doesn't reflect SMT setting");
- 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)
-{
- static struct kvm_cpuid2 cpuid = {.nent = 0};
- int ret;
-
- ret = _vcpu_ioctl(vm, VCPU_ID, 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);
-}
-
-
-struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(struct kvm_vm *vm)
-{
- int nent = 20; /* should be enough */
- static struct kvm_cpuid2 *cpuid;
-
- cpuid = malloc(sizeof(*cpuid) + nent * sizeof(struct kvm_cpuid_entry2));
-
- if (!cpuid) {
- perror("malloc");
- abort();
- }
-
- cpuid->nent = nent;
-
- vcpu_ioctl(vm, VCPU_ID, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
-
- return cpuid;
-}
-
-
-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) {
- 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);
- 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;
- }
-
- 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);
- }
-
- return 0;
-}