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KVM: s390: add MSA9 to cpumodel

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This enables stfle.155 and adds the subfunctions for KDSA. Bit 155 is
added to the list of facilities that will be enabled when there is no
cpu model involved as MSA9 requires no additional handling from
userspace, e.g. for migration.

Please note that a cpu model enabled user space can and will have the
final decision on the facility bits for a guests.

Signed-off-by: Christian Borntraeger <[email protected]>
Acked-by: Janosch Frank <[email protected]>
Reviewed-by: Collin Walling <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
This commit is contained in:
Christian Borntraeger 2018-12-28 09:33:35 +01:00
commit 13209ad039
6 changed files with 21 additions and 3 deletions
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3
Documentation/virtual/kvm/devices/vm.txt
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@ -141,7 +141,8 @@ struct kvm_s390_vm_cpu_subfunc {
u8 pcc[16]; # valid with Message-Security-Assist-Extension 4
u8 ppno[16]; # valid with Message-Security-Assist-Extension 5
u8 kma[16]; # valid with Message-Security-Assist-Extension 8
u8 reserved[1808]; # reserved for future instructions
u8 kdsa[16]; # valid with Message-Security-Assist-Extension 9
u8 reserved[1792]; # reserved for future instructions
};
Parameters: address of a buffer to load the subfunction blocks from.