>> Well that is very interesting, you are the first one who reports that SME + >> GFX works in some way. So far we only got negative reports for that. >> >>> There is a 4.16.13 boot dmesg which has no such issue: >>> >>> >>> http://ftp.frugalware.org/pub/other/people/crazy/radeon/dmesg-radeon-SME-ON-kernel-4.16.txt >>> >>> With the setup as is booting 4.16.x works , while 4.17 trows the errors. >> >> >> Please do the bisect if the patch I've mentioned above doesn't help. > > Ok done.. bisect points to: > > b468620f2a1dfdcfddfd6fa54367b8bcc1b51248 is the first bad commit > commit b468620f2a1dfdcfddfd6fa54367b8bcc1b51248 > Author: Christoph Hellwig <hch@xxxxxx> > Date: Mon Mar 19 11:38:19 2018 +0100 > > iommu/amd_iommu: Use CONFIG_DMA_DIRECT_OPS=y and dma_direct_{alloc,free}() > > This cleans up the code a lot by removing duplicate logic. > > Tested-by: Tom Lendacky <thomas.lendacky@xxxxxxx> > Tested-by: Joerg Roedel <jroedel@xxxxxxx> > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Acked-by: Joerg Roedel <jroedel@xxxxxxx> > Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx> > Cc: Joerg Roedel <joro@xxxxxxxxxx> > Cc: Jon Mason <jdmason@xxxxxxxx> > Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> > Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Cc: Muli Ben-Yehuda <mulix@xxxxxxxxx> > Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx > Link: http://lkml.kernel.org/r/20180319103826.12853-8-hch@xxxxxx > Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> > > > I'll try to revert this once I'm home. I can confirm reverting b468620f2a1dfdcfddfd6fa54367b8bcc1b51248 fixes that issue for me. The GPU is working fine with SME enabled. Now with working GPU :) I can also confirm performance is back to normal without doing any other workarounds. The only app still acting up a bit is Firefox , just minor frame drops, but nothing to bad. ( probably an Firefox bug too ) crhomium/chrome is fine .. even with 10 tabs open , each one playing an video on youtube no glitches at all. Desktop is also fine now, could not find anything wrong. BR _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
