KVM: arm64: enable KVM_CAP_SET_GUEST_DEBUG

Finally advertise the KVM capability for SET_GUEST_DEBUG. Once arm
support is added this check can be moved to the common
kvm_vm_ioctl_check_extension() code.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 9b99402b14df..409217f48456 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -116,13 +116,17 @@ struct kvm_vcpu_arch {
 	 * debugging the guest from the host and to maintain separate host and
 	 * guest state during world switches. vcpu_debug_state are the debug
 	 * registers of the vcpu as the guest sees them.  host_debug_state are
-	 * the host registers which are saved and restored during world switches.
+	 * the host registers which are saved and restored during
+	 * world switches. external_debug_state contains the debug
+	 * values we want to debug the guest. This is set via the
+	 * KVM_SET_GUEST_DEBUG ioctl.
 	 *
 	 * debug_ptr points to the set of debug registers that should be loaded
 	 * onto the hardware when running the guest.
 	 */
 	struct kvm_guest_debug_arch *debug_ptr;
 	struct kvm_guest_debug_arch vcpu_debug_state;
+	struct kvm_guest_debug_arch external_debug_state;
 
 	/* Pointer to host CPU context */
 	kvm_cpu_context_t *host_cpu_context;