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KVM: selftests: Add a macro to define a test with one vcpu

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Most tests are currently not giving any proper output for the user
to see how much sub-tests have already been run, or whether new
sub-tests are part of a binary or not. So it would be good to
support TAP output in the KVM selftests. There is already a nice
framework for this in the kselftest_harness.h header which we can
use. But since we also need a vcpu in most KVM selftests, it also
makes sense to introduce our own wrapper around this which takes
care of creating a VM with one vcpu, so we don't have to repeat
this boilerplate in each and every test. Thus let's introduce
a KVM_ONE_VCPU_TEST() macro here which takes care of this.

Suggested-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/all/Y2v+B3xxYKJSM%2FfH@google.com/
Signed-off-by: Thomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20240208204844.119326-5-thuth@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Thomas Huth 2024-02-08 21:48:40 +01:00 committed by Sean Christopherson
parent 53a43dd48f
commit 55f2cf8848
1 changed files with 36 additions and 0 deletions
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36
tools/testing/selftests/kvm/include/kvm_test_harness.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Macros for defining a KVM test
*
* Copyright (C) 2022, Google LLC.
*/
#ifndef SELFTEST_KVM_TEST_HARNESS_H
#define SELFTEST_KVM_TEST_HARNESS_H
#include "kselftest_harness.h"
#define KVM_ONE_VCPU_TEST_SUITE(name) \
FIXTURE(name) { \
struct kvm_vcpu *vcpu; \
}; \
\
FIXTURE_SETUP(name) { \
(void)vm_create_with_one_vcpu(&self->vcpu, NULL); \
} \
\
FIXTURE_TEARDOWN(name) { \
kvm_vm_free(self->vcpu->vm); \
}
#define KVM_ONE_VCPU_TEST(suite, test, guestcode) \
static void __suite##_##test(struct kvm_vcpu *vcpu); \
\
TEST_F(suite, test) \
{ \
vcpu_arch_set_entry_point(self->vcpu, guestcode); \
__suite##_##test(self->vcpu); \
} \
static void __suite##_##test(struct kvm_vcpu *vcpu)
#endif /* SELFTEST_KVM_TEST_HARNESS_H */