KVM: selftests: Add kvm_has_cap() to provide syntactic sugar

Add kvm_has_cap() to wrap kvm_check_cap() and return a bool for the use
cases where the caller only wants check if a capability is supported,
i.e. doesn't care about the value beyond whether or not it's non-zero.
The "check" terminology is somewhat ambiguous as the non-boolean return
suggests that '0' might mean "success", i.e. suggests that the ioctl uses
the 0/-errno pattern.  Provide a wrapper instead of trying to find a new
name for the raw helper; the "check" terminology is derived from the name
of the ioctl, so using e.g. "get" isn't a clear win.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 2 insertions, 2 deletions

diff --git a/tools/testing/selftests/kvm/aarch64/get-reg-list.c b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
index f0f83ffda344..8bc10b9acbbc 100644
--- a/tools/testing/selftests/kvm/aarch64/get-reg-list.c
+++ b/tools/testing/selftests/kvm/aarch64/get-reg-list.c
@@ -395,7 +395,7 @@ static void check_supported(struct vcpu_config *c)
 	struct reg_sublist *s;
 
 	for_each_sublist(c, s) {
-		if (s->capability && !kvm_check_cap(s->capability)) {
+		if (s->capability && !kvm_has_cap(s->capability)) {
 			fprintf(stderr, "%s: %s not available, skipping tests\n", config_name(c), s->name);
 			exit(KSFT_SKIP);
 		}
diff --git a/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c b/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c
index dd5a1c4b49e0..fff02c442610 100644
--- a/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c
+++ b/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c
@@ -82,7 +82,7 @@ int main(void)
 	struct kvm_vm *vm;
 	int ret;
 
-	if (!kvm_check_cap(KVM_CAP_ARM_EL1_32BIT)) {
+	if (!kvm_has_cap(KVM_CAP_ARM_EL1_32BIT)) {
 		print_skip("KVM_CAP_ARM_EL1_32BIT is not supported");
 		exit(KSFT_SKIP);
 	}