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KVM: s390: vsie: support shared IPTE-interlock facility

Selaa lähdekoodia 
As we forward the whole SCA provided by guest 2, we can directly forward
SIIF if available.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand
2015-11-25 09:59:49 +01:00
committed by Christian Borntraeger
vanhempi 19c439b564
commit 0615a326e0
3 muutettua tiedostoa jossa 5 lisäystä ja 0 poistoa
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2
arch/s390/kvm/kvm-s390.c
Näytä tiedosto

@@ -267,6 +267,8 @@ static void kvm_s390_cpu_feat_init(void)
allow_cpu_feat(KVM_S390_VM_CPU_FEAT_SIEF2);
if (sclp.has_64bscao)
allow_cpu_feat(KVM_S390_VM_CPU_FEAT_64BSCAO);
if (sclp.has_siif)
allow_cpu_feat(KVM_S390_VM_CPU_FEAT_SIIF);
}
int kvm_arch_init(void *opaque)

2
arch/s390/kvm/vsie.c
Näytä tiedosto

@@ -315,6 +315,8 @@ 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;
if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_SIIF))
scb_s->eca |= scb_o->eca & 0x00000001U;
prepare_ibc(vcpu, vsie_page);
rc = shadow_crycb(vcpu, vsie_page);