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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-04-12 11:07:49 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-10 12:07:25 +0200 |
| commit | bdab09f3d81c3fac6314012ca0eff1206ea067ab (patch) | |
| tree | 6bdde2d09ff81426bf99d2a6107ec8f214ed1abb /arch | |
| parent | KVM: s390: enable ibs only if available (diff) | |
| download | linux-bdab09f3d81c3fac6314012ca0eff1206ea067ab.tar.xz linux-bdab09f3d81c3fac6314012ca0eff1206ea067ab.zip | |
KVM: s390: enable host-protection-interruption only with ESOP
host-protection-interruption control was introduced with ESOP. So let's
enable it only if we have ESOP and add an explanatory comment why
we can live without it.
Reviewed-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/kvm/kvm-s390.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ad93b40bfdc0..4e764faed524 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1837,7 +1837,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) kvm_s390_vcpu_setup_model(vcpu); - vcpu->arch.sie_block->ecb = 0x02; + /* pgste_set_pte has special handling for !MACHINE_HAS_ESOP */ + if (MACHINE_HAS_ESOP) + vcpu->arch.sie_block->ecb |= 0x02; if (test_kvm_facility(vcpu->kvm, 9)) vcpu->arch.sie_block->ecb |= 0x04; if (test_kvm_facility(vcpu->kvm, 50) && test_kvm_facility(vcpu->kvm, 73)) |