RE: [PATCH 3/6] vfio: remove the unused mdev iommu hook
From: "Tian, Kevin" <kevin.tian@intel.com>
Date: 2021-07-23 05:38:41
Also in:
kvm, linux-iommu
From: Christoph Hellwig <hch@lst.de> Sent: Thursday, July 22, 2021 9:35 PM On Wed, Jun 30, 2021 at 09:08:19AM +0000, Tian, Kevin wrote:quoted
The iommu layer should maintain above attaching status per device andperquoted
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.quoted
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