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authorCollin L. Walling <walling@linux.vnet.ibm.com>2016-07-26 15:29:44 -0400
committerChristian Borntraeger <borntraeger@de.ibm.com>2017-08-29 15:15:54 +0200
commit8fa1696ea78162ca3112a26879d9379483443c85 (patch)
tree3930f3b5b7b71e39dd8117c87704392b7badc840 /arch/s390/tools
parentb697e435aeee99b7f5b2d8f8dbb51f791be99b16 (diff)
downloadlinux-8fa1696ea78162ca3112a26879d9379483443c85.tar.bz2
KVM: s390: Multiple Epoch Facility support
Allow for the enablement of MEF and the support for the extended epoch in SIE and VSIE for the extended guest TOD-Clock. A new interface is used for getting/setting a guest's extended TOD-Clock that uses a single ioctl invocation, KVM_S390_VM_TOD_EXT. Since the host time is a moving target that might see an epoch switch or STP sync checks we need an atomic ioctl and cannot use the exisiting two interfaces. The old method of getting and setting the guest TOD-Clock is still retained and is used when the old ioctls are called. Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Reviewed-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/tools')
-rw-r--r--arch/s390/tools/gen_facilities.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c
index 181db5b8f8b3..601bfcf99e2a 100644
--- a/arch/s390/tools/gen_facilities.c
+++ b/arch/s390/tools/gen_facilities.c
@@ -81,6 +81,7 @@ static struct facility_def facility_defs[] = {
130, /* instruction-execution-protection */
131, /* enhanced-SOP 2 and side-effect */
138, /* configuration z/architecture mode (czam) */
+ 139, /* multiple epoch facility */
146, /* msa extension 8 */
-1 /* END */
}