From 605145103abb21c555d5982073bee29269aaad51 Mon Sep 17 00:00:00 2001 From: "Eugene (jno) Dvurechenski" Date: Tue, 21 Apr 2015 14:44:54 +0200 Subject: [PATCH] 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 Signed-off-by: Christian Borntraeger --- arch/s390/kvm/gaccess.c | 10 +++++----- 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 -- 2.20.1