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selftests: KVM: Add helpers for vCPU device attributes

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vCPU file descriptors are abstracted away from test code in KVM
selftests, meaning that tests cannot directly access a vCPU's device
attributes. Add helpers that tests can use to get at vCPU device
attributes.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Message-Id: <20210916181555.973085-5-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Oliver Upton 2021-09-16 18:15:50 +00:00 committed by Paolo Bonzini
parent c1901feef5
commit c895513453
2 changed files with 47 additions and 0 deletions
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9
tools/testing/selftests/kvm/include/kvm_util.h
View file

@ -240,6 +240,15 @@ int _kvm_device_access(int dev_fd, uint32_t group, uint64_t attr,
int kvm_device_access(int dev_fd, uint32_t group, uint64_t attr,
void *val, bool write);
int _vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr);
int vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr);
int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr, void *val, bool write);
int vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr, void *val, bool write);
const char *exit_reason_str(unsigned int exit_reason);
void virt_pgd_alloc(struct kvm_vm *vm);

38
tools/testing/selftests/kvm/lib/kvm_util.c
View file

@ -2040,6 +2040,44 @@ int kvm_device_access(int dev_fd, uint32_t group, uint64_t attr,
return ret;
}
int _vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
TEST_ASSERT(vcpu, "nonexistent vcpu id: %d", vcpuid);
return _kvm_device_check_attr(vcpu->fd, group, attr);
}
int vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr)
{
int ret = _vcpu_has_device_attr(vm, vcpuid, group, attr);
TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR IOCTL failed, rc: %i errno: %i", ret, errno);
return ret;
}
int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr, void *val, bool write)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
TEST_ASSERT(vcpu, "nonexistent vcpu id: %d", vcpuid);
return _kvm_device_access(vcpu->fd, group, attr, val, write);
}
int vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
uint64_t attr, void *val, bool write)
{
int ret = _vcpu_access_device_attr(vm, vcpuid, group, attr, val, write);
TEST_ASSERT(!ret, "KVM_SET|GET_DEVICE_ATTR IOCTL failed, rc: %i errno: %i", ret, errno);
return ret;
}
/*
* VM Dump
*