On Thu, Sep 03, 2020 at 09:18:37PM +0100, Tom Murphy wrote: > Disable combining sg segments in the dma-iommu api. > Combining the sg segments exposes a bug in the intel i915 driver which > causes visual artifacts and the screen to freeze. This is most likely > because of how the i915 handles the returned list. It probably doesn't > respect the returned value specifying the number of elements in the list > and instead depends on the previous behaviour of the intel iommu driver > which would return the same number of elements in the output list as in > the input list.
So what is the state of addressing this properly in i915? IF we can't get it done ASAP I wonder if we need a runtime quirk to disable merging instead of blocking this conversion.. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
