svm: Add warning message for AVIC IPI invalid target

Print warning message when IPI target ID is invalid due to one of
the following reasons:
  * In logical mode: cluster > max_cluster (64)
  * In physical mode: target > max_physical (512)
  * Address is not present in the physical or logical ID tables

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm.c

@@ -4526,6 +4526,8 @@ static int avic_incomplete_ipi_interception(struct vcpu_svm *svm)
 		break;
 	}
 	case AVIC_IPI_FAILURE_INVALID_TARGET:
+		WARN_ONCE(1, "Invalid IPI target: index=%u, vcpu=%d, icr=%#0x:%#0x\n",
+			  index, svm->vcpu.vcpu_id, icrh, icrl);
 		break;
 	case AVIC_IPI_FAILURE_INVALID_BACKING_PAGE:
 		WARN_ONCE(1, "Invalid backing page\n");