Commit e9bf3acb authored by Janosch Frank's avatar Janosch Frank Committed by Christian Borntraeger
Browse files

KVM: s390: Add KVM_CAP_S390_PROTECTED_DUMP 



The capability indicates dump support for protected VMs.

Signed-off-by: default avatarJanosch Frank <frankja@linux.ibm.com>
Reviewed-by: default avatarClaudio Imbrenda <imbrenda@linux.ibm.com>
Link: https://lore.kernel.org/r/20220517163629.3443-9-frankja@linux.ibm.com


Message-Id: <20220517163629.3443-9-frankja@linux.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@linux.ibm.com>
parent 8aba0958

arch/s390/kvm/kvm-s390.c

+20 −0
Original line number Diff line number Diff line
@@ -606,6 +606,26 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) 
	case KVM_CAP_S390_PROTECTED:

		r = is_prot_virt_host();

		break;

	case KVM_CAP_S390_PROTECTED_DUMP: {

		u64 pv_cmds_dump[] = {

			BIT_UVC_CMD_DUMP_INIT,

			BIT_UVC_CMD_DUMP_CONFIG_STOR_STATE,

			BIT_UVC_CMD_DUMP_CPU,

			BIT_UVC_CMD_DUMP_COMPLETE,

		};

		int i;



		r = is_prot_virt_host();



		for (i = 0; i < ARRAY_SIZE(pv_cmds_dump); i++) {

			if (!test_bit_inv(pv_cmds_dump[i],

					  (unsigned long *)&uv_info.inst_calls_list)) {

				r = 0;

				break;

			}

		}

		break;

	}

	default:

		r = 0;

	}

include/uapi/linux/kvm.h

+1 −0
Original line number Diff line number Diff line
@@ -1157,6 +1157,7 @@ struct kvm_ppc_resize_hpt { 
#define KVM_CAP_VM_TSC_CONTROL 214

#define KVM_CAP_SYSTEM_EVENT_DATA 215

#define KVM_CAP_ARM_SYSTEM_SUSPEND 216

#define KVM_CAP_S390_PROTECTED_DUMP 217



#ifdef KVM_CAP_IRQ_ROUTING