From: Janosch Frank <frankja@linux.ibm.com>
Date: Tue, 17 May 2022 16:36:26 +0000
Subject: KVM: s390: Add KVM_CAP_S390_PROTECTED_DUMP
Git-commit: e9bf3acb23f0a6e18438c35944d6cb618d16cf05
Patch-mainline: v6.0-rc1
References: jsc#PED-622
The capability indicates dump support for protected VMs.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio 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: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
arch/s390/kvm/kvm-s390.c | 20 ++++++++++++++++++++
include/uapi/linux/kvm.h | 1 +
2 files changed, 21 insertions(+)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -609,6 +609,26 @@ int kvm_vm_ioctl_check_extension(struct
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;
}
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1120,6 +1120,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_ARM_MTE 205
#define KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM 206
#define KVM_CAP_S390_MEM_OP_EXTENSION 211
+#define KVM_CAP_S390_PROTECTED_DUMP 217
#ifdef KVM_CAP_IRQ_ROUTING