On 24.11.2023 11:41, Jiqian Chen wrote:
> --- a/xen/arch/x86/hvm/hypercall.c
> +++ b/xen/arch/x86/hvm/hypercall.c
> @@ -74,6 +74,8 @@ long hvm_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void)
> arg)
> {
> case PHYSDEVOP_map_pirq:
> case PHYSDEVOP_unmap_pirq:
> + if (is_hardware_domain(currd))
> + break;
> case PHYSDEVOP_eoi:
> case PHYSDEVOP_irq_status_query:
> case PHYSDEVOP_get_free_pirq:
If you wouldn't go the route suggested by Roger, I think you will need
to deny self-mapping requests here.
Also note that both here and in patch 1 you will want to adjust a number
of style violations.
Jan
