On Mon, May 16, 2022 at 12:27:41AM -0700, Christoph Hellwig wrote: > On Mon, May 16, 2022 at 09:57:56AM +0800, Lu Baolu wrote: > > Each IOMMU driver must provide a blocking domain ops. If the hardware > > supports detaching domain from device, setting blocking domain equals > > detaching the existing domain from the deivce. Otherwise, an UNMANAGED > > domain without any mapping will be used instead. > > blocking in this case means not allowing any access? The naming > sounds a bit odd to me as blocking in the kernel has a specific > meaning. Maybe something like noaccess ops might be a better name?
It is because of this: include/linux/iommu.h: * IOMMU_DOMAIN_BLOCKED - All DMA is blocked, can be used to isolate include/linux/iommu.h:#define IOMMU_DOMAIN_BLOCKED (0U) noaccess might be clearer Jason _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
