On Mon, Sep 10, 2018 at 11:16:12AM +0300, Meelis Roos wrote: > In 4.19-rc1, I found that to keep Intel integrated graphics working when > VT-d is on, I need to have IOMMU passthough on or GPU init would fail > with DMAR error and the screen would display static gibberish. So I > turned IOMMU PT on by default in kernel config. It worked, also in rc2. > > Now with rc3, it still works but I get some warning splats in dmesg > about IOMMU passthrough:
Any chance you could bisect this down to a specific commit? For a start it might be worth if it is reproducable with: git://git.infradead.org/users/hch/dma-mapping.git dma-mapping-4.19-2 which were the only dma-mapping changes post -rc2. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
