On 23.04.22 09:05, Oleksandr wrote:
On 23.04.22 02:00, Stefano Stabellini wrote: Hello StefanoOn Fri, 22 Apr 2022, Oleksandr Tyshchenko wrote:From: Juergen Gross <jgr...@suse.com> Introduce Xen grant DMA-mapping layer which contains special DMA-mapping routines for providing grant references as DMA addresses to be used by frontends (e.g. virtio) in Xen guests. In order to support virtio in Xen guests add a config option XEN_VIRTIO enabling the user to specify whether in all Xen guests virtio should be able to access memory via Xen grant mappings only on the host side. As this also requires providing arch_has_restricted_virtio_memory_access implementation, switch from a pure stub to a real function on Arm and combine with existing implementation for the SEV guests on x86. Add the needed functionality by providing a special set of DMA ops handling the needed grant operations for the I/O pages. Signed-off-by: Juergen Gross <jgr...@suse.com> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshche...@epam.com>There are a couple of minor things that checkpatch.pl reports,Thank you for pointing this out, my fault.but aside from those the patch looks fine to me.good The attached diff to be squashed for the new version. One thing remains: checkpatch.pl says regarding drivers/xen/grant-dma-ops.c: WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? #151: new file mode 100644Which, I assume, this is not an issue as new file falls under XEN HYPERVISOR INTERFACE maintainership?
Yes. Juergen
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