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authorJanosch Frank <frankja@linux.vnet.ibm.com>2016-08-04 09:57:36 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2017-01-30 11:17:28 +0100
commitcd1836f583d78bdd15ef748f4d85bf007569c7ad (patch)
treeae8d9a7818721f5e006d19d8ea538bb4089cce0b
parenta679c547d19ded9b7d1a88e17cf5e5b69ac619b6 (diff)
KVM: s390: instruction-execution-protection support
The new Instruction Execution Protection needs to be enabled before the guest can use it. Therefore we pass the IEP facility bit to the guest and enable IEP interpretation. Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
-rw-r--r--arch/s390/kvm/kvm-s390.c2
-rw-r--r--arch/s390/kvm/vsie.c3
-rw-r--r--arch/s390/tools/gen_facilities.c1
3 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index bec71e902be3..e5130818fb03 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -1938,6 +1938,8 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
if (test_kvm_facility(vcpu->kvm, 8) && sclp.has_pfmfi)
vcpu->arch.sie_block->ecb2 |= 0x08;
+ if (test_kvm_facility(vcpu->kvm, 130))
+ vcpu->arch.sie_block->ecb2 |= 0x20;
vcpu->arch.sie_block->eca = 0x1002000U;
if (sclp.has_cei)
vcpu->arch.sie_block->eca |= 0x80000000U;
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index d8673e243f13..ed62c6d57d93 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -324,6 +324,9 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
/* Run-time-Instrumentation */
if (test_kvm_facility(vcpu->kvm, 64))
scb_s->ecb3 |= scb_o->ecb3 & 0x01U;
+ /* Instruction Execution Prevention */
+ if (test_kvm_facility(vcpu->kvm, 130))
+ scb_s->ecb2 |= scb_o->ecb2 & 0x20U;
if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_SIIF))
scb_s->eca |= scb_o->eca & 0x00000001U;
if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_IB))
diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c
index b6ac8dfee001..0cf802de52a1 100644
--- a/arch/s390/tools/gen_facilities.c
+++ b/arch/s390/tools/gen_facilities.c
@@ -80,6 +80,7 @@ static struct facility_def facility_defs[] = {
76, /* msa extension 3 */
77, /* msa extension 4 */
78, /* enhanced-DAT 2 */
+ 130, /* instruction-execution-protection */
131, /* enhanced-SOP 2 and side-effect */
-1 /* END */
}