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authorCollin Walling <walling@linux.ibm.com>2018-08-31 12:51:19 -0400
committerChristian Borntraeger <borntraeger@de.ibm.com>2018-10-01 08:51:42 +0200
commit67d49d52ae502eaea8858fbcb97e3c2891f78da9 (patch)
tree72fe89366897e691286803a123d2d1784bb22606 /arch/s390/kvm
parent7876320f88802b22d4e2daf7eb027dd14175a0f8 (diff)
KVM: s390: set host program identifier
A host program identifier (HPID) provides information regarding the underlying host environment. A level-2 (VM) guest will have an HPID denoting Linux/KVM, which is set during VCPU setup. A level-3 (VM on a VM) and beyond guest will have an HPID denoting KVM vSIE, which is set for all shadow control blocks, overriding the original value of the HPID. Signed-off-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Message-Id: <1535734279-10204-4-git-send-email-walling@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
-rw-r--r--arch/s390/kvm/kvm-s390.c2
-rw-r--r--arch/s390/kvm/vsie.c2
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index f69333fd2fa3..a1e8205d4b6b 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2685,6 +2685,8 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
vcpu->arch.ckc_timer.function = kvm_s390_idle_wakeup;
+ vcpu->arch.sie_block->hpid = HPID_KVM;
+
kvm_s390_vcpu_crypto_setup(vcpu);
return rc;
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index a2b28cd1e3fe..41eab96c5f87 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -383,6 +383,8 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
if (test_kvm_facility(vcpu->kvm, 156))
scb_s->ecd |= scb_o->ecd & ECD_ETOKENF;
+ scb_s->hpid = HPID_VSIE;
+
prepare_ibc(vcpu, vsie_page);
rc = shadow_crycb(vcpu, vsie_page);
out: