Commit 1935222d authored by David Hildenbrand's avatar David Hildenbrand Committed by Christian Borntraeger

KVM: s390: we are always in czam mode

Independent of the underlying hardware, kvm will now always handle
SIGP SET ARCHITECTURE as if czam were enabled. Therefore, let's not
only forward that bit but always set it.

While at it, add a comment regarding STHYI.
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
Message-Id: <20170829143108.14703-1-david@redhat.com>
Reviewed-by: default avatarCornelia Huck <cohuck@redhat.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 1bab1c02
...@@ -1927,6 +1927,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) ...@@ -1927,6 +1927,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
memcpy(kvm->arch.model.fac_list, kvm->arch.model.fac_mask, memcpy(kvm->arch.model.fac_list, kvm->arch.model.fac_mask,
S390_ARCH_FAC_LIST_SIZE_BYTE); S390_ARCH_FAC_LIST_SIZE_BYTE);
/* we are always in czam mode - even on pre z14 machines */
set_kvm_facility(kvm->arch.model.fac_mask, 138);
set_kvm_facility(kvm->arch.model.fac_list, 138);
/* we emulate STHYI in kvm */
set_kvm_facility(kvm->arch.model.fac_mask, 74); set_kvm_facility(kvm->arch.model.fac_mask, 74);
set_kvm_facility(kvm->arch.model.fac_list, 74); set_kvm_facility(kvm->arch.model.fac_list, 74);
if (MACHINE_HAS_TLB_GUEST) { if (MACHINE_HAS_TLB_GUEST) {
......
...@@ -80,7 +80,6 @@ static struct facility_def facility_defs[] = { ...@@ -80,7 +80,6 @@ static struct facility_def facility_defs[] = {
78, /* enhanced-DAT 2 */ 78, /* enhanced-DAT 2 */
130, /* instruction-execution-protection */ 130, /* instruction-execution-protection */
131, /* enhanced-SOP 2 and side-effect */ 131, /* enhanced-SOP 2 and side-effect */
138, /* configuration z/architecture mode (czam) */
139, /* multiple epoch facility */ 139, /* multiple epoch facility */
146, /* msa extension 8 */ 146, /* msa extension 8 */
-1 /* END */ -1 /* END */
......
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