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| author | Janosch Frank <frankja@linux.ibm.com> | 2022-05-17 16:36:26 +0000 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@linux.ibm.com> | 2022-06-01 16:57:14 +0200 |
| commit | e9bf3acb23f0a6e18438c35944d6cb618d16cf05 (patch) | |
| tree | 6ff7f30fdededad098146029530001f258be7f1e | |
| parent | 8aba09588d2af37c6cc1a781b87d1d91ebf389ae (diff) | |
| download | lwn-e9bf3acb23f0a6e18438c35944d6cb618d16cf05.tar.gz lwn-e9bf3acb23f0a6e18438c35944d6cb618d16cf05.zip | |
KVM: s390: Add KVM_CAP_S390_PROTECTED_DUMP
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>
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 20 | ||||
| -rw-r--r-- | include/uapi/linux/kvm.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 37be2a33edb5..d1a32eb3cf5d 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -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; } diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index af5d254f8061..c4a32910b88a 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -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 |