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KVM: selftests: Add a VM backpointer to 'struct vcpu'

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Add a backpointer to 'struct vcpu' so that tests can get at the owning
VM when passing around a vCPU object.  Long term, this will be little
more than a nice-to-have feature, but in the short term it is a critical
step toward purging the VM+vcpu_id ioctl mess without introducing even
more churn.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2022-02-15 15:14:29 -08:00 committed by Paolo Bonzini
parent 114eef6e46
commit c472df1ac3
2 changed files with 2 additions and 0 deletions
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1
tools/testing/selftests/kvm/include/kvm_util_base.h
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@ -47,6 +47,7 @@ struct vcpu {
struct list_head list;
uint32_t id;
int fd;
struct kvm_vm *vm;
struct kvm_run *state;
struct kvm_dirty_gfn *dirty_gfns;
uint32_t fetch_index;

1
tools/testing/selftests/kvm/lib/kvm_util.c
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@ -1099,6 +1099,7 @@ void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid)
vcpu = calloc(1, sizeof(*vcpu));
TEST_ASSERT(vcpu != NULL, "Insufficient Memory");
vcpu->vm = vm;
vcpu->id = vcpuid;
vcpu->fd = __vm_ioctl(vm, KVM_CREATE_VCPU, (void *)(unsigned long)vcpuid);
TEST_ASSERT(vcpu->fd >= 0, KVM_IOCTL_ERROR(KVM_CREATE_VCPU, vcpu->fd));