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selftests: kvm: Move kvm_get_supported_hv_cpuid() to common code 

kvm_get_supported_hv_cpuid() may come handy in all Hyper-V related tests.
Split it off hyperv_cpuid test, create system-wide and vcpu versions.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210126134816.1880136-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vitaly Kuznetsov 2021-01-26 14:48:02 +01:00 committed by Paolo Bonzini
parent 4fc096a99e
commit 32f00fd9ef
3 changed files with 39 additions and 28 deletions
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3
tools/testing/selftests/kvm/include/x86_64/processor.h
View File

@ -406,6 +406,9 @@ bool set_cpuid(struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 *ent);
uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2,
uint64_t a3);
struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void);
struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vm *vm, uint32_t vcpuid);
/*
* Basic CPU control in CR0
*/

33
tools/testing/selftests/kvm/lib/x86_64/processor.c
View File

@ -1300,3 +1300,36 @@ uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2,
: "b"(a0), "c"(a1), "d"(a2), "S"(a3));
return r;
}
struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void)
{
static struct kvm_cpuid2 *cpuid;
int ret;
int kvm_fd;
if (cpuid)
return cpuid;
cpuid = allocate_kvm_cpuid2();
kvm_fd = open(KVM_DEV_PATH, O_RDONLY);
if (kvm_fd < 0)
exit(KSFT_SKIP);
ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_HV_CPUID failed %d %d\n",
ret, errno);
close(kvm_fd);
return cpuid;
}
struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vm *vm, uint32_t vcpuid)
{
static struct kvm_cpuid2 *cpuid;
cpuid = allocate_kvm_cpuid2();
vcpu_ioctl(vm, vcpuid, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
return cpuid;
}

31
tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c
View File

@ -125,30 +125,6 @@ void test_hv_cpuid_e2big(struct kvm_vm *vm, bool system)
" it should have: %d %d", system ? "KVM" : "vCPU", ret, errno);
}
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;
cpuid = malloc(sizeof(*cpuid) + nent * sizeof(struct kvm_cpuid_entry2));
if (!cpuid) {
perror("malloc");
abort();
}
cpuid->nent = nent;
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;
}
int main(int argc, char *argv[])
{
struct kvm_vm *vm;
@ -167,7 +143,7 @@ int main(int argc, char *argv[])
/* Test vCPU ioctl version */
test_hv_cpuid_e2big(vm, false);
hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, false);
hv_cpuid_entries = vcpu_get_supported_hv_cpuid(vm, VCPU_ID);
test_hv_cpuid(hv_cpuid_entries, false);
free(hv_cpuid_entries);
@ -177,7 +153,7 @@ int main(int argc, char *argv[])
goto do_sys;
}
vcpu_enable_evmcs(vm, VCPU_ID);
hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, false);
hv_cpuid_entries = vcpu_get_supported_hv_cpuid(vm, VCPU_ID);
test_hv_cpuid(hv_cpuid_entries, true);
free(hv_cpuid_entries);
@ -190,9 +166,8 @@ int main(int argc, char *argv[])
test_hv_cpuid_e2big(vm, true);
hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, true);
hv_cpuid_entries = kvm_get_supported_hv_cpuid();
test_hv_cpuid(hv_cpuid_entries, nested_vmx_supported());
free(hv_cpuid_entries);
out:
kvm_vm_free(vm);