On Thu, 6 Oct 2022, Oleksandr Tyshchenko wrote: > On 06.10.22 10:14, Juergen Gross wrote: > > Hello Juergen > > > With CONFIG_XEN_VIRTIO_FORCE_GRANT set the default backend domid to 0, > > enabling to use xen_grant_dma_ops for those devices. > > > > Signed-off-by: Juergen Gross <[email protected]> > > --- > > drivers/xen/grant-dma-ops.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > Reviewed-by: Oleksandr Tyshchenko <[email protected]>
Acked-by: Stefano Stabellini <[email protected]> > > diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c > > index f29759d5301f..a00112235877 100644 > > --- a/drivers/xen/grant-dma-ops.c > > +++ b/drivers/xen/grant-dma-ops.c > > @@ -349,6 +349,9 @@ void xen_grant_setup_dma_ops(struct device *dev) > > if (dev->of_node) { > > if (xen_dt_grant_setup_dma_ops(dev, data)) > > goto err; > > + } else if (IS_ENABLED(CONFIG_XEN_VIRTIO_FORCE_GRANT)) { > > + dev_info(dev, "Using dom0 as backend\n"); > > + data->backend_domid = 0; > > } else { > > /* XXX ACPI device unsupported for now */ > > goto err; > > -- > Regards, > > Oleksandr Tyshchenko >
