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charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 3/29/21 9:53 PM, Jean-Philippe Brucker wrote: > On Fri, Mar 12, 2021 at 06:39:05PM +0530, Vivek Kumar Gautam wrote: >> To complete the page request we would also need to send the response back to >> the host from virtio backend when handling page request. So the virtio >> command should also be accompanied with a vfio api to send the page request >> response back to the host. Isn't it? >> This is where the host smmuv3 can send PRI_RESP command to the device to >> complete the page fault. > > It looks like Eric already has this in the VFIO series: > https://lore.kernel.org/linux-iommu/20210223210625.604517-14-eric.auger@redhat.com/ Right, I have taken this change to work on getting the vSVA with virtio-iommu. For this I am adding a new request for virtio-iomm - VIRTIO_IOMMU_T_PAGE_RESP, and related struct virtio_iommu_req_page_resp that would contain information such as, pasid, grpid, response_code, flags, and endpoint. This is inline with struct iommu_page_response. I will post out the patches for this soon. Thanks & regards Vivek > > Thanks, > Jean > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel