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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > From: Christoph Hellwig > Sent: Thursday, July 22, 2021 9:35 PM > > On Wed, Jun 30, 2021 at 09:08:19AM +0000, Tian, Kevin wrote: > > The iommu layer should maintain above attaching status per device and > per > > iommu domain. There is no mdev/subdev concept in the iommu layer. It's > > just about RID or PASID. > > Yes, I think that makes sense. > > > And a new set of IOMMU-API: > > > > - iommu_{un}bind_pgtable(domain, dev, addr); > > - iommu_{un}bind_pgtable_pasid(domain, dev, addr, pasid); > > - iommu_cache_invalidate(domain, dev, invalid_info); > > What caches is this supposed to "invalidate"? pasid cache, iotlb or dev_iotlb entries that are related to the bound pgtable. the actual affected cache type and granularity (device-wide, pasid-wide, selected addr-range) are specified by the caller. Thanks Kevin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel