Commit 5c2b4d5b authored by Christian Borntraeger's avatar Christian Borntraeger

KVM: document KVM_CAP_S390_[BPB|PSW|GMAP|COW]

commit 35b3fde6 ("KVM: s390: wire up bpb feature") has no
documentation for KVM_CAP_S390_BPB. While adding this let's also add
other missing capabilities like KVM_CAP_S390_PSW, KVM_CAP_S390_GMAP and
KVM_CAP_S390_COW.
Reviewed-by: default avatarCornelia Huck <cohuck@redhat.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarJanosch Frank <frankja@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent c9f0a2b8
...@@ -4467,3 +4467,33 @@ Parameters: none ...@@ -4467,3 +4467,33 @@ Parameters: none
This capability indicates if the flic device will be able to get/set the This capability indicates if the flic device will be able to get/set the
AIS states for migration via the KVM_DEV_FLIC_AISM_ALL attribute and allows AIS states for migration via the KVM_DEV_FLIC_AISM_ALL attribute and allows
to discover this without having to create a flic device. to discover this without having to create a flic device.
8.14 KVM_CAP_S390_PSW
Architectures: s390
This capability indicates that the PSW is exposed via the kvm_run structure.
8.15 KVM_CAP_S390_GMAP
Architectures: s390
This capability indicates that the user space memory used as guest mapping can
be anywhere in the user memory address space, as long as the memory slots are
aligned and sized to a segment (1MB) boundary.
8.16 KVM_CAP_S390_COW
Architectures: s390
This capability indicates that the user space memory used as guest mapping can
use copy-on-write semantics as well as dirty pages tracking via read-only page
tables.
8.17 KVM_CAP_S390_BPB
Architectures: s390
This capability indicates that kvm will implement the interfaces to handle
reset, migration and nested KVM for branch prediction blocking. The stfle
facility 82 should not be provided to the guest without this capability.
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