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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2015-11-24 16:56:23 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-21 09:43:43 +0200 |
| commit | 7fd7f39daa3da822122124730437c4f37e4d82de (patch) | |
| tree | ede479d5258ac059dcc49aeb28a6617042bf7b3d /arch | |
| parent | 13ee3f678b1117d7511a2c5e10549f7c37f4cadf (diff) | |
| download | linux-7fd7f39daa3da822122124730437c4f37e4d82de.tar.gz | |
KVM: s390: vsie: support IBS interpretation
We can easily enable ibs for guest 2, so he 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')
| -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 7630dd70ed57..c128567d1cd3 100644 --- a/arch/s390/include/uapi/asm/kvm.h +++ b/arch/s390/include/uapi/asm/kvm.h @@ -105,6 +105,7 @@ struct kvm_s390_vm_cpu_machine { #define KVM_S390_VM_CPU_FEAT_GSLS 5 #define KVM_S390_VM_CPU_FEAT_IB 6 #define KVM_S390_VM_CPU_FEAT_CEI 7 +#define KVM_S390_VM_CPU_FEAT_IBS 8 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 1c1188ba1042..8ba7a98a50cf 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -277,6 +277,8 @@ static void kvm_s390_cpu_feat_init(void) allow_cpu_feat(KVM_S390_VM_CPU_FEAT_IB); if (sclp.has_cei) allow_cpu_feat(KVM_S390_VM_CPU_FEAT_CEI); + if (sclp.has_ibs) + allow_cpu_feat(KVM_S390_VM_CPU_FEAT_IBS); } int kvm_arch_init(void *opaque) diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index f3a4a0bad4a7..3ececbbd6bb0 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -111,6 +111,8 @@ static int prepare_cpuflags(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) newflags |= cpuflags & CPUSTAT_P; if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_GSLS)) newflags |= cpuflags & CPUSTAT_SM; + if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_IBS)) + newflags |= cpuflags & CPUSTAT_IBS; atomic_set(&scb_s->cpuflags, newflags); return 0; |