[RFC PATCH v11 09/29] KVM: x86: Disallow hugepages when memory attributes are mixed
Paolo Bonzini
pbonzini at redhat.com
Fri Jul 21 11:59:36 UTC 2023
On 7/19/23 01:44, Sean Christopherson wrote:
> +static bool range_has_attrs(struct kvm *kvm, gfn_t start, gfn_t end,
> + unsigned long attrs)
> +{
> + XA_STATE(xas, &kvm->mem_attr_array, start);
> + unsigned long index;
> + bool has_attrs;
> + void *entry;
> +
> + rcu_read_lock();
> +
> + if (!attrs) {
> + has_attrs = !xas_find(&xas, end);
> + goto out;
> + }
> +
> + has_attrs = true;
> + for (index = start; index < end; index++) {
> + do {
> + entry = xas_next(&xas);
> + } while (xas_retry(&xas, entry));
> +
> + if (xas.xa_index != index || xa_to_value(entry) != attrs) {
> + has_attrs = false;
> + break;
> + }
> + }
> +
> +out:
> + rcu_read_unlock();
> + return has_attrs;
> +}
> +
Can you move this function to virt/kvm/kvm_main.c?
Thanks,
Paolo
More information about the Linux-security-module-archive
mailing list