kvm tools: Use kvm__supports_extension instead of kvm__has_cap

kvm__supports_extension has been there before, and it's does it's job right
unlike kvm__has_cap.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

include/kvm/kvm.h

@@ -82,5 +82,6 @@ static inline void *guest_flat_to_host(struct kvm *kvm, unsigned long offset)
 }
 
 bool kvm__has_cap(struct kvm *kvm, u32 cap);
+bool kvm__supports_extension(struct kvm *kvm, unsigned int extension);
 
 #endif /* KVM__KVM_H */

ioeventfd.c

@@ -22,7 +22,7 @@ static bool	ioeventfd_avail;
 
 void ioeventfd__init(struct kvm *kvm)
 {
-	ioeventfd_avail = kvm__has_cap(kvm, KVM_CAP_IOEVENTFD);
+	ioeventfd_avail = kvm__supports_extension(kvm, KVM_CAP_IOEVENTFD);
 	if (!ioeventfd_avail)
 		return;
 

kvm.c

@@ -90,7 +90,7 @@ const char *kvm__get_dir(void)
 	return kvm_dir;
 }
 
-static bool kvm__supports_extension(struct kvm *kvm, unsigned int extension)
+bool kvm__supports_extension(struct kvm *kvm, unsigned int extension)
 {
 	int ret;