On Wed, Nov 25, 2020 at 02:05:15PM +0000, Will Deacon wrote: > On Wed, 25 Nov 2020 09:41:24 +0800, Lu Baolu wrote: > > After commit 327d5b2fee91c ("iommu/vt-d: Allow 32bit devices to uses DMA > > domain"), swiotbl could also be used for direct memory access if IOMMU > > is enabled but a device is configured to pass through the DMA translation. > > Keep swiotlb when IOMMU is forced on, otherwise, some devices won't work > > if "iommu=pt" kernel parameter is used. > > Applied to arm64 (for-next/iommu/fixes), thanks! > > [1/1] x86/tboot: Don't disable swiotlb when iommu is forced on > https://git.kernel.org/arm64/c/e2be2a833ab5
But tboot never ran on ARM. It is a Intel specifc. I think either me or Thomas should take this patch. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu