Commit f1f93650 authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Alex Williamson
Browse files

vfio: Check that IOMMU MR translates to system address space 



At the moment IOMMU MR only translate to the system memory.
However if some new code changes this, we will need clear indication why
it is not working so here is the check.

Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent d78c19b5

hw/vfio/common.c

+6 −0
Original line number Diff line number Diff line
@@ -269,6 +269,12 @@ static void vfio_iommu_map_notify(Notifier *n, void *data) 


    trace_vfio_iommu_map_notify(iova, iova + iotlb->addr_mask);



    if (iotlb->target_as != &address_space_memory) {

        error_report("Wrong target AS \"%s\", only system memory is allowed",

                     iotlb->target_as->name ? iotlb->target_as->name : "none");

        return;

    }



    /*

     * The IOMMU TLB entry we have just covers translation through

     * this IOMMU to its immediate target.  We need to translate