Re: [PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-10 Thread Christian König
Am 10.08.20 um 12:50 schrieb Michel Dänzer: On 2020-08-09 2:13 p.m., Christian König wrote: Am 08.08.20 um 15:50 schrieb Jiaxun Yang: 在 2020/8/8 下午9:41, Thomas Bogendoerfer 写道: On Sat, Aug 08, 2020 at 03:25:02PM +0800, Tiezhu Yang wrote: Loongson processors have a writecombine issue that

Re: [PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-10 Thread Michel Dänzer
On 2020-08-09 2:13 p.m., Christian König wrote: > Am 08.08.20 um 15:50 schrieb Jiaxun Yang: >> 在 2020/8/8 下午9:41, Thomas Bogendoerfer 写道: >>> On Sat, Aug 08, 2020 at 03:25:02PM +0800, Tiezhu Yang wrote: Loongson processors have a writecombine issue that maybe failed to write back

Re: [PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-09 Thread Tiezhu Yang
On 08/09/2020 08:13 PM, Christian König wrote: Am 08.08.20 um 15:50 schrieb Jiaxun Yang: 在 2020/8/8 下午9:41, Thomas Bogendoerfer 写道: On Sat, Aug 08, 2020 at 03:25:02PM +0800, Tiezhu Yang wrote: Loongson processors have a writecombine issue that maybe failed to write back framebuffer used

Re: [PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-09 Thread Christian König
Am 08.08.20 um 15:50 schrieb Jiaxun Yang: 在 2020/8/8 下午9:41, Thomas Bogendoerfer 写道: On Sat, Aug 08, 2020 at 03:25:02PM +0800, Tiezhu Yang wrote: Loongson processors have a writecombine issue that maybe failed to write back framebuffer used with ATI Radeon or AMD GPU at times, after commit

Re: [PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-08 Thread Jiaxun Yang
在 2020/8/8 下午9:41, Thomas Bogendoerfer 写道: On Sat, Aug 08, 2020 at 03:25:02PM +0800, Tiezhu Yang wrote: Loongson processors have a writecombine issue that maybe failed to write back framebuffer used with ATI Radeon or AMD GPU at times, after commit 8a08e50cee66 ("drm: Permit video-buffers

Re: [PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-08 Thread Thomas Bogendoerfer
On Sat, Aug 08, 2020 at 03:25:02PM +0800, Tiezhu Yang wrote: > Loongson processors have a writecombine issue that maybe failed to > write back framebuffer used with ATI Radeon or AMD GPU at times, > after commit 8a08e50cee66 ("drm: Permit video-buffers writecombine > mapping for MIPS"), there

[PATCH] gpu/drm: Remove TTM_PL_FLAG_WC of VRAM to fix writecombine issue for Loongson64

2020-08-08 Thread Tiezhu Yang
Loongson processors have a writecombine issue that maybe failed to write back framebuffer used with ATI Radeon or AMD GPU at times, after commit 8a08e50cee66 ("drm: Permit video-buffers writecombine mapping for MIPS"), there exists some errors such as blurred screen and lockup, and so on. Remove