On Thu, Jan 07, 2021 at 12:03:56AM +0800, Liu Yi L wrote: > In the existing code, loop all devices attached to a domain does not > include sub-devices attached via iommu_aux_attach_device(). > > This was found by when I'm working on the below patch, There is no > device in the domain->devices list, thus unable to get the cap and > ecap of iommu unit. But this domain actually has subdevice which is > attached via aux-manner. But it is tracked by domain. This patch is > going to fix it. > > https://lore.kernel.org/kvm/1599734733-6431-17-git-send-email-yi.l....@intel.com/ > > And this fix goes beyond the patch above, such sub-device tracking is > necessary for other cases. For example, flushing device_iotlb for a > domain which has sub-devices attached by auxiliary manner.
Sorry, but I'm having a really hard time understanding what this patch is doing based on this commit message. Baolu -- do you think you could reword it for me please? No need to resend the patch. Thanks, Will _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
