[Nouveau] [Bug 94757] New: powerpc64 & 64Kb kernel pagesize not working with nouveau
https://bugs.freedesktop.org/show_bug.cgi?id=94757 Bug ID: 94757 Summary: powerpc64 & 64Kb kernel pagesize not working with nouveau Product: xorg Version: unspecified Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Driver/nouveau Assignee: nouveau@lists.freedesktop.org Reporter: mathieu.malate...@gmail.com QA Contact: xorg-t...@lists.x.org The recent Debian kernels for powerpc64 are configured with a 64Kb kernel pagesize. This works slightly better in terms of performance, however the nouveau display driver does not currently work kernel pagesizes other than 4Kb size when running XOrg and powerpc64. It works ok if only using the console though. Currently, users must recompile the kernel unfortunately and configure with 4Kb kernel pagesize as this is what nouveau will only work with for now. This is a hindrance to making people want to adopt debian as their preffered linux distro with powerpc64 G5 powermac machines. Im currently running vanilla 3.18.16 configured with 4Kb and nouveau can be made to work without too many dramas. -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94757] powerpc64 & 64Kb kernel pagesize not working with nouveau
https://bugs.freedesktop.org/show_bug.cgi?id=94757 --- Comment #1 from Mathieu Malaterre --- Original bug report is: https://bugs.debian.org/790690 -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94757] powerpc64 & 64Kb kernel pagesize not working with nouveau
https://bugs.freedesktop.org/show_bug.cgi?id=94757 --- Comment #2 from Mathieu Malaterre --- As explained here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790694#27 [...] I saw that bug report as well. I'm not sure what to do about it - other distributions were also using 64K pages for 64-bit PowerPC the last time I looked, and there may be good reasons to do that. [...] So it would make sense to make nouveau capable of handling 64K pages for 64-bits PowerPC. -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94757] powerpc64 & 64Kb kernel pagesize not working with nouveau
https://bugs.freedesktop.org/show_bug.cgi?id=94757 --- Comment #3 from Ilia Mirkin --- Unfortunately it's not just a switch to flip on. A lot of the current code is very confused about cpu pages vs gpu pages (which are always 4K). Also one would need a bunch of handling code to deal with sub-cpu-page-sized allocations on the GPU (or conversely just disallow those entirely). Nouveau is known to not work properly on non-4K-cpu-page-size, at least with some GPUs (maybe even all). AFAIK the benefits of using 64K-pages are virtually non-existent outside the HPC space (each cached 1 byte file takes up 64K of memory, so it goes a lot faster). But that's certainly not an argument for not supporting 64K pages in nouveau. The argument for not supporting 64K pages is -ENOPATCH :) AFAIK benh tried for a while and failed. This was ~2y ago. -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94757] powerpc64 & 64Kb kernel pagesize not working with nouveau
https://bugs.freedesktop.org/show_bug.cgi?id=94757 --- Comment #4 from Mathieu Malaterre --- Understood. I've reported that back to the Debian kernel team, let's see if we can have 4K page back for PPC64: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=790694#52 -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94725] Nouveau driver fails to poweron GPU on GM204 after dynamic poweroff
https://bugs.freedesktop.org/show_bug.cgi?id=94725 Rashed Abdel-Tawab changed: What|Removed |Added Summary|Nouveau driver fails to |Nouveau driver fails to |load on GM204 |poweron GPU on GM204 after ||dynamic poweroff -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94725] Nouveau driver fails to poweron GPU on GM204 after dynamic poweroff
https://bugs.freedesktop.org/show_bug.cgi?id=94725 Efrem McCrimon changed: What|Removed |Added CC||efrem...@gmail.com --- Comment #5 from Efrem McCrimon --- I have the same problem with a GM206, GTX 960. I have to recycle the computer twice. -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
[Nouveau] [Bug 94757] powerpc64 & 64Kb kernel pagesize not working with nouveau
https://bugs.freedesktop.org/show_bug.cgi?id=94757 --- Comment #5 from Mathieu Malaterre --- As a side note, would it be possible to have a better error message. Something along: printk( "Sorry nouveau only support 4K pages" ); -- You are receiving this mail because: You are the assignee for the bug.___ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
