diff options
| author | Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> | 2015-04-21 14:44:54 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-11-30 12:47:06 +0100 |
| commit | 605145103abb21c555d5982073bee29269aaad51 (patch) | |
| tree | c2d27657e3dc1c13d72254ca57a00113645c358b /arch/s390 | |
| parent | s390/sclp: introduce checks for ESCA and HVS (diff) | |
| download | linux-605145103abb21c555d5982073bee29269aaad51.tar.xz linux-605145103abb21c555d5982073bee29269aaad51.zip | |
KVM: s390: Generalize access to IPTE controls
This patch generalizes access to the IPTE controls, which is a part of SCA.
This is to prepare for upcoming introduction of Extended SCA support.
Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kvm/gaccess.c | 10 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 5 |
2 files changed, 10 insertions, 5 deletions
diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c index a7559f7207df..06f7edb3770d 100644 --- a/arch/s390/kvm/gaccess.c +++ b/arch/s390/kvm/gaccess.c @@ -259,7 +259,7 @@ struct aste { int ipte_lock_held(struct kvm_vcpu *vcpu) { - union ipte_control *ic = &vcpu->kvm->arch.sca->ipte_control; + union ipte_control *ic = kvm_s390_get_ipte_control(vcpu->kvm); if (vcpu->arch.sie_block->eca & 1) return ic->kh != 0; @@ -274,7 +274,7 @@ static void ipte_lock_simple(struct kvm_vcpu *vcpu) vcpu->kvm->arch.ipte_lock_count++; if (vcpu->kvm->arch.ipte_lock_count > 1) goto out; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); while (old.k) { @@ -296,7 +296,7 @@ static void ipte_unlock_simple(struct kvm_vcpu *vcpu) vcpu->kvm->arch.ipte_lock_count--; if (vcpu->kvm->arch.ipte_lock_count) goto out; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); new = old; @@ -311,7 +311,7 @@ static void ipte_lock_siif(struct kvm_vcpu *vcpu) { union ipte_control old, new, *ic; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); while (old.kg) { @@ -328,7 +328,7 @@ static void ipte_unlock_siif(struct kvm_vcpu *vcpu) { union ipte_control old, new, *ic; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); new = old; diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 1e70e00d3c5e..844f711972f9 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -340,4 +340,9 @@ void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); +/* support for Basic/Extended SCA handling */ +static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm) +{ + return &kvm->arch.sca->ipte_control; +} #endif |