Commit 44b5ce73 authored Aug 26, 2014 by Christoffer Dall Committed by Paolo Bonzini Aug 29, 2014

KVM: Unconditionally export KVM_CAP_USER_NMI



The idea between capabilities and the KVM_CHECK_EXTENSION ioctl is that
userspace can, at run-time, determine if a feature is supported or not.
This allows KVM to being supporting a new feature with a new kernel
version without any need to update user space.  Unfortunately, since the
definition of KVM_CAP_USER_NMI was guarded by #ifdef
__KVM_HAVE_USER_NMI, such discovery still required a user space update.

Therefore, unconditionally export KVM_CAP_USER_NMI and change the
the typo in the comment for the IOCTL number definition as well.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 0f8a4de3

include/uapi/linux/kvm.h

+1 −3

Original line number	Diff line number	Diff line
		@@ -654,9 +654,7 @@ struct kvm_ppc_smmu_info {
		#endif
		/* Bug in KVM_SET_USER_MEMORY_REGION fixed: */
		#define KVM_CAP_DESTROY_MEMORY_REGION_WORKS 21
		#ifdef __KVM_HAVE_USER_NMI
		#define KVM_CAP_USER_NMI 22
		#endif
		#ifdef __KVM_HAVE_GUEST_DEBUG
		#define KVM_CAP_SET_GUEST_DEBUG 23
		#endif
		@@ -1091,7 +1089,7 @@ struct kvm_s390_ucas_mapping {
		#define KVM_S390_INITIAL_RESET _IO(KVMIO, 0x97)
		#define KVM_GET_MP_STATE _IOR(KVMIO, 0x98, struct kvm_mp_state)
		#define KVM_SET_MP_STATE _IOW(KVMIO, 0x99, struct kvm_mp_state)
		/* Available with KVM_CAP_NMI */
		/* Available with KVM_CAP_USER_NMI */
		#define KVM_NMI _IO(KVMIO, 0x9a)
		/* Available with KVM_CAP_SET_GUEST_DEBUG */
		#define KVM_SET_GUEST_DEBUG _IOW(KVMIO, 0x9b, struct kvm_guest_debug)