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| author | Janosch Frank | 2018-02-15 16:33:47 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2018-05-17 09:00:41 +0200 |
| commit | 55531b7431db789766ac952391e95c170db48581 (patch) | |
| tree | 8e1a5fb6985cfb7faf1e2a61c1a4681488513dea /arch/s390/kvm/kvm-s390.c | |
| parent | Linux 4.17-rc4 (diff) | |
| download | kernel-qcow2-linux-55531b7431db789766ac952391e95c170db48581.tar.gz kernel-qcow2-linux-55531b7431db789766ac952391e95c170db48581.tar.xz kernel-qcow2-linux-55531b7431db789766ac952391e95c170db48581.zip | |
KVM: s390: Add storage key facility interpretation control
Up to now we always expected to have the storage key facility
available for our (non-VSIE) KVM guests. For huge page support, we
need to be able to disable it, so let's introduce that now.
We add the use_skf variable to manage KVM storage key facility
usage. Also we rename use_skey in the mm context struct to uses_skeys
to make it more clear that it is an indication that the vm actively
uses storage keys.
Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/kvm-s390.c')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 64c986243018..007db8faafa5 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1493,7 +1493,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) return -EINVAL; /* Is this guest using storage keys? */ - if (!mm_use_skey(current->mm)) + if (!mm_uses_skeys(current->mm)) return KVM_S390_GET_SKEYS_NONE; /* Enforce sane limit on memory allocation */ @@ -2066,6 +2066,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) kvm->arch.css_support = 0; kvm->arch.use_irqchip = 0; kvm->arch.use_pfmfi = sclp.has_pfmfi; + kvm->arch.use_skf = sclp.has_skey; kvm->arch.epoch = 0; spin_lock_init(&kvm->arch.start_stop_lock); |