diff options
Diffstat (limited to 'arch/arm64/kvm/vgic')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic-kvm-device.c | 22 | ||||
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic.h | 4 |
2 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-kvm-device.c b/arch/arm64/kvm/vgic/vgic-kvm-device.c index 7740995de982..cc0ad227b380 100644 --- a/arch/arm64/kvm/vgic/vgic-kvm-device.c +++ b/arch/arm64/kvm/vgic/vgic-kvm-device.c @@ -29,6 +29,28 @@ int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr, return 0; } +int vgic_check_iorange(struct kvm *kvm, phys_addr_t ioaddr, + phys_addr_t addr, phys_addr_t alignment, + phys_addr_t size) +{ + int ret; + + ret = vgic_check_ioaddr(kvm, &ioaddr, addr, alignment); + if (ret) + return ret; + + if (!IS_ALIGNED(size, alignment)) + return -EINVAL; + + if (addr + size < addr) + return -EINVAL; + + if (addr + size > kvm_phys_size(kvm)) + return -E2BIG; + + return 0; +} + static int vgic_check_type(struct kvm *kvm, int type_needed) { if (kvm->arch.vgic.vgic_model != type_needed) diff --git a/arch/arm64/kvm/vgic/vgic.h b/arch/arm64/kvm/vgic/vgic.h index 14a9218641f5..4be01c38e8f1 100644 --- a/arch/arm64/kvm/vgic/vgic.h +++ b/arch/arm64/kvm/vgic/vgic.h @@ -175,6 +175,10 @@ void vgic_irq_handle_resampling(struct vgic_irq *irq, int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr, phys_addr_t addr, phys_addr_t alignment); +int vgic_check_iorange(struct kvm *kvm, phys_addr_t ioaddr, + phys_addr_t addr, phys_addr_t alignment, + phys_addr_t size); + void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu); void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr); void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr); |