On Tue, Feb 9, 2016 at 12:20 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > (switched to email. Please respond via emailed reply-to-all, not via the > bugzilla web interface). > > On Tue, 09 Feb 2016 08:41:39 +0000 bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > >> https://bugzilla.kernel.org/show_bug.cgi?id=112211 >> >> Bug ID: 112211 >> Summary: ATI Radeon Graphics not rendering correctly >> Product: Memory Management >> Version: 2.5 >> Kernel Version: Linux 4.5-rc3 >> Hardware: IA-32 >> OS: Linux >> Tree: Mainline >> Status: NEW >> Severity: normal >> Priority: P1 >> Component: Page Allocator >> Assignee: akpm@xxxxxxxxxxxxxxxxxxxx >> Reporter: smf.linux@xxxxxxxxxxxx >> Regression: No >> >> On testing linux 4.5-rc( 1,2 and 3) I have found that my display is not >> rendered correctly on starting the X server. My screen is mainly black with >> portions of the desktop appearing from time to time. I initially raised this >> with the DRM/Radeon team: >> >> https://bugs.freedesktop.org/show_bug.cgi?id=93998 >> >> On investigation a bisect identified the following commit as the source of my >> problem: >> >> 01c8f1c44b83a0825b573e7c723b033cece37b86 is the first bad commit >> commit 01c8f1c44b83a0825b573e7c723b033cece37b86 >> Author: Dan Williams <dan.j.williams@xxxxxxxxx> >> Date: Fri Jan 15 16:56:40 2016 -0800 >> >> mm, dax, gpu: convert vm_insert_mixed to pfn_t >> >> Convert the raw unsigned long 'pfn' argument to pfn_t for the purpose of >> evaluating the PFN_MAP and PFN_DEV flags. When both are set it triggers >> _PAGE_DEVMAP to be set in the resulting pte. >> >> There are no functional changes to the gpu drivers as a result of this >> conversion. >> >> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> >> Cc: Dave Hansen <dave@xxxxxxxx> >> Cc: David Airlie <airlied@xxxxxxxx> >> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> >> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> >> >> The problem is present on two AMD/ATI systems I have tried but is absent from >> my Intel based laptop. All my systems are 32 bit LFS builds. >> >> I did try to contact Dan Williams but I am not sure that my e-mail got through, >> can anyone suggest a way forward please ? >> > > Does your kernel include > > commit 03fc2da63b9a33dce784a2075c7e068bb97cbf69 > Author: Dan Williams <dan.j.williams@xxxxxxxxx> > Date: Tue Jan 26 09:48:05 2016 -0800 > > mm: fix pfn_t to page conversion in vm_insert_mixed > Hi Stuart, from the bugzilla activity it looks like you are already running with this fix. Can you append you kernel config file to the bugzilla. There's something particular about 32-bit builds I'm missing... -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>