From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>,
Eduardo Habkost <ehabkost@redhat.com>,
Jon Doron <arilou@gmail.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 7/7] KVM: selftests: test KVM_GET_SUPPORTED_HV_CPUID as a system ioctl
Date: Thu, 24 Sep 2020 16:57:57 +0200 [thread overview]
Message-ID: <20200924145757.1035782-8-vkuznets@redhat.com> (raw)
In-Reply-To: <20200924145757.1035782-1-vkuznets@redhat.com>
KVM_GET_SUPPORTED_HV_CPUID is now supported as both vCPU and VM ioctl,
test that.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
.../testing/selftests/kvm/include/kvm_util.h | 2 +
tools/testing/selftests/kvm/lib/kvm_util.c | 26 +++++++++++
.../selftests/kvm/x86_64/hyperv_cpuid.c | 46 +++++++++++++------
3 files changed, 59 insertions(+), 15 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 919e161dd289..59482e4eb308 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -112,6 +112,8 @@ 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 74776ee228f2..d49e24a15836 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1518,6 +1518,32 @@ void vm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg)
cmd, ret, errno, strerror(errno));
}
+/*
+ * 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
*
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c b/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c
index 8b24cb2e6a19..414b7587f0f9 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c
@@ -102,20 +102,23 @@ 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;
@@ -129,7 +132,10 @@ 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;
}
@@ -150,22 +156,32 @@ int main(int argc, char *argv[])
exit(KSFT_SKIP);
}
- for (stage = 0; stage < 2; stage++) {
+ vm = vm_create_default(VCPU_ID, 0, guest_code);
+
+ for (stage = 0; stage < 4; stage++) {
+ bool do_sys_ioctl = stage > 1;
+
+ /* Stages 0/1 test vCPU ioctl, stages 2/3 system ioctl */
+ if (do_sys_ioctl && !kvm_check_cap(KVM_CAP_SYS_HYPERV_CPUID)) {
+ print_skip("KVM_CAP_SYS_HYPERV_CPUID not supported");
+ break;
+ }
- vm = vm_create_default(VCPU_ID, 0, guest_code);
switch (stage) {
case 0:
- test_hv_cpuid_e2big(vm);
- continue;
+ case 2:
+ test_hv_cpuid_e2big(vm, do_sys_ioctl);
+ break;
case 1:
+ case 3:
+ hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm, do_sys_ioctl);
+ test_hv_cpuid(hv_cpuid_entries);
+ free(hv_cpuid_entries);
break;
}
-
- hv_cpuid_entries = kvm_get_supported_hv_cpuid(vm);
- test_hv_cpuid(hv_cpuid_entries);
- free(hv_cpuid_entries);
- kvm_vm_free(vm);
}
+ kvm_vm_free(vm);
+
return 0;
}
--
2.25.4
next prev parent reply other threads:[~2020-09-24 14:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-24 14:57 [PATCH v2 0/7] KVM: x86: hyper-v: make KVM_GET_SUPPORTED_HV_CPUID more useful Vitaly Kuznetsov
2020-09-24 14:57 ` [PATCH v2 1/7] KVM: x86: hyper-v: Mention SynDBG CPUID leaves in api.rst Vitaly Kuznetsov
2020-09-24 14:57 ` [PATCH v2 2/7] KVM: x86: hyper-v: disallow configuring SynIC timers with no SynIC Vitaly Kuznetsov
2020-09-24 14:57 ` [PATCH v2 3/7] KVM: x86: hyper-v: make KVM_GET_SUPPORTED_HV_CPUID output independent of eVMCS enablement Vitaly Kuznetsov
2020-09-24 14:57 ` [PATCH v2 4/7] KVM: x86: hyper-v: always advertise HV_STIMER_DIRECT_MODE_AVAILABLE Vitaly Kuznetsov
2020-09-25 20:32 ` Paolo Bonzini
2020-09-29 10:36 ` Vitaly Kuznetsov
2020-09-29 11:03 ` Paolo Bonzini
2020-09-29 11:26 ` Vitaly Kuznetsov
2020-09-24 14:57 ` [PATCH v2 5/7] KVM: x86: hyper-v: drop now unneeded vcpu parameter from kvm_vcpu_ioctl_get_hv_cpuid() Vitaly Kuznetsov
2020-09-24 14:57 ` [PATCH v2 6/7] KVM: x86: hyper-v: allow KVM_GET_SUPPORTED_HV_CPUID as a system ioctl Vitaly Kuznetsov
2020-09-24 14:57 ` Vitaly Kuznetsov [this message]
2020-09-25 20:33 ` [PATCH v2 0/7] KVM: x86: hyper-v: make KVM_GET_SUPPORTED_HV_CPUID more useful Paolo Bonzini
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