On Sat, Nov 10, 2012 at 04:44:51PM +0100, Christoffer Dall wrote:
[...]
> +int kvm_vgic_set_addr(struct kvm *kvm, unsigned long type, u64 addr)
> +{
> + int r = 0;
> + struct vgic_dist *vgic = &kvm->arch.vgic;
> +
> + if (addr & ~KVM_PHYS_MASK)
> + return -E2BIG;
> +
> + if (addr & ~PAGE_MASK)
> + return -EINVAL;
> +
> + mutex_lock(&kvm->lock);
> + switch (type) {
> + case KVM_VGIC_V2_ADDR_TYPE_DIST:
> + if (!IS_VGIC_ADDR_UNDEF(vgic->vgic_dist_base))
> + return -EEXIST;
> + if (addr + VGIC_DIST_SIZE < addr)
> + return -EINVAL;
> + kvm->arch.vgic.vgic_dist_base = addr;
> + break;
> + case KVM_VGIC_V2_ADDR_TYPE_CPU:
> + if (!IS_VGIC_ADDR_UNDEF(vgic->vgic_cpu_base))
> + return -EEXIST;
> + if (addr + VGIC_CPU_SIZE < addr)
> + return -EINVAL;
> + kvm->arch.vgic.vgic_cpu_base = addr;
> + break;
> + default:
> + r = -ENODEV;
> + }
> +
> + if (vgic_ioaddr_overlap(kvm)) {
> + kvm->arch.vgic.vgic_dist_base = VGIC_ADDR_UNDEF;
> + kvm->arch.vgic.vgic_cpu_base = VGIC_ADDR_UNDEF;
Missing mutex_unlock?
> + return -EINVAL;
> + }
> +
> + mutex_unlock(&kvm->lock);
> + return r;
> +}
>
Regards
Dong Aisheng
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