diff options
| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2015-11-24 16:53:51 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-21 09:43:42 +0200 |
| commit | 5630a8e82b1ee4d13daa500c045603c5b4801fd9 (patch) | |
| tree | dc29a1b7fb0defaaeeb5b116c35d1d9c7155fd35 /arch/s390 | |
| parent | a1b7b9b286c0157748922526ecb353e550209833 (diff) | |
| download | linux-5630a8e82b1ee4d13daa500c045603c5b4801fd9.tar.gz linux-5630a8e82b1ee4d13daa500c045603c5b4801fd9.tar.bz2 linux-5630a8e82b1ee4d13daa500c045603c5b4801fd9.zip | |
KVM: s390: vsie: support intervention-bypass
We can easily enable intervention bypass for guest 2, so it can use it
for guest 3.
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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/uapi/asm/kvm.h | 1 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 2 | ||||
| -rw-r--r-- | arch/s390/kvm/vsie.c | 2 |
3 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h index 9ed07479714f..347f4f61b656 100644 --- a/arch/s390/include/uapi/asm/kvm.h +++ b/arch/s390/include/uapi/asm/kvm.h @@ -103,6 +103,7 @@ struct kvm_s390_vm_cpu_machine { #define KVM_S390_VM_CPU_FEAT_SIIF 3 #define KVM_S390_VM_CPU_FEAT_GPERE 4 #define KVM_S390_VM_CPU_FEAT_GSLS 5 +#define KVM_S390_VM_CPU_FEAT_IB 6 struct kvm_s390_vm_cpu_feat { __u64 feat[16]; }; diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ce9813afd502..5ec598ca7660 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -273,6 +273,8 @@ static void kvm_s390_cpu_feat_init(void) allow_cpu_feat(KVM_S390_VM_CPU_FEAT_GPERE); if (sclp.has_gsls) allow_cpu_feat(KVM_S390_VM_CPU_FEAT_GSLS); + if (sclp.has_ib) + allow_cpu_feat(KVM_S390_VM_CPU_FEAT_IB); } int kvm_arch_init(void *opaque) diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index ea65bf2f0201..d29bd592fb3d 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -322,6 +322,8 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) 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; + if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_IB)) + scb_s->eca |= scb_o->eca & 0x40000000U; prepare_ibc(vcpu, vsie_page); rc = shadow_crycb(vcpu, vsie_page); |