Hi Christopher,
Am 07.06.2018 um 18:24 schrieb Gabriel C:
[SNIP] Ok done.. bisect points to:
b468620f2a1dfdcfddfd6fa54367b8bcc1b51248 is the first bad commit commit b468620f2a1dfdcfddfd6fa54367b8bcc1b51248 Author: Christoph Hellwig hch@lst.de 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@amd.com> Tested-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Joerg Roedel <jroedel@suse.de> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Joerg Roedel <joro@8bytes.org> Cc: Jon Mason <jdmason@kudzu.us> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Muli Ben-Yehuda <mulix@mulix.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: iommu@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20180319103826.12853-8-hch@lst.de Signed-off-by: Ingo Molnar <mingo@kernel.org>I'll try to revert this once I'm home.
I can confirm reverting b468620f2a1dfdcfddfd6fa54367b8bcc1b51248 fixes that issue for me.
any idea what could cause that? Basically this patch breaks radeon when SME is enabled.
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.
Thanks for testing, Christian.
BR