On Wed, Oct 28, 2020 at 7:31 PM Christoph Hellwig <h...@lst.de> wrote: > > On Wed, Oct 28, 2020 at 01:39:17PM +0200, Oded Gabbay wrote: > > On Sat, Aug 3, 2019 at 9:26 AM Christoph Hellwig <h...@lst.de> wrote: > > > > > > See the discussion at: > > > > > > https://lists.linuxfoundation.org/pipermail/iommu/2019-August/037716.html > > > > > > Just curious, what driver do you use that uses dma_mmap_coherent on > > > x86? > > > _______________________________________________ > > > iommu mailing list > > > iommu@lists.linux-foundation.org > > > https://lists.linuxfoundation.org/mailman/listinfo/iommu > > > > Hi Christoph, > > In the habanalabs driver we have moved to use dma_mmap_coherent (to > > match dma_alloc_coherent - see commit > > https://lkml.org/lkml/2020/8/29/252) > > Since then, we are plagued by the kernel log message that gavin has > > mentioned, as we are mostly running in our C/I environment with 5.4. > > I wondered if you know if there was any fix to that in the more recent > > kernels ? > > If not, can I help to fix that ? > > What are the kernel log messages that gaving has mentioned?
This one: 11:22:43 [Wed Oct 28 11:22:34 2020] x86/PAT: synapse_tests:29265 map pfn RAM range req uncached-minus for [mem 0xe6236b000-0xe6236bfff], got write-back Thousands of the same message with different addresses of course. Thanks, Oded _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
