On 7/25/19 10:11 AM, Christoph Hellwig wrote: > On Thu, Jul 25, 2019 at 10:10:08AM -0400, Andrew F. Davis wrote: >> Pages yes, but not "normal" pages from the kernel managed area. >> page_to_pfn() will return bad values on the pages returned by this >> allocator and so will any of the kernel sync/map functions. Therefor >> those operations cannot be common and need special per-heap handling. > > Well, that means this thing is buggy and abuses the scatterlist API > and we can't merge it anyway, so it is irrelevant. >
Since when do scatterlists need to only have kernel virtual backed memory pages? Device memory is stored in scatterlists and dma_sync_sg_for_* would fail just the same when the cache ops were attempted. _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
