The KVM_GET_REG_LIST vCPU ioctl returns a list of supported registers
for a given vCPU. Add a helper to check if a register exists in the list
of supported registers.
Signed-off-by: Oliver Upton <oupton@xxxxxxxxxx>
Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
---
.../testing/selftests/kvm/include/kvm_util.h | 2 ++
tools/testing/selftests/kvm/lib/kvm_util.c | 19 +++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 1b3ef5757819..077082dd2ca7 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -215,6 +215,8 @@ void vcpu_fpu_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_fpu *fpu);
void vcpu_fpu_set(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_fpu *fpu);
+
+bool vcpu_has_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t reg_id);
void vcpu_get_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_one_reg *reg);
void vcpu_set_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_one_reg *reg);
#ifdef __KVM_HAVE_VCPU_EVENTS
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 0fe66ca6139a..a5801d4ed37d 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1823,6 +1823,25 @@ void vcpu_fpu_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_fpu *fpu)
ret, errno, strerror(errno));
}
+bool vcpu_has_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t reg_id)
+{
+ struct kvm_reg_list *list;
+ bool ret = false;
+ uint64_t i;
+
+ list = vcpu_get_reg_list(vm, vcpuid);
+
+ for (i = 0; i < list->n; i++) {
+ if (list->reg[i] == reg_id) {
+ ret = true;
+ break;
+ }
+ }
+
+ free(list);
+ return ret;
+}
+
void vcpu_get_reg(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_one_reg *reg)
{
int ret;
--
2.33.0.rc1.237.g0d66db33f3-goog
