https://bugs.freedesktop.org/show_bug.cgi?id=36914

Summary: r600g: add rv670 flushing workaround. Causes games and some mesa demos to segfault. Product: Mesa Version: git Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: lists@andyfurniss.entadsl.com

RV670 AGP card with agpmode=-1, d-r-t kernel as it was 16/03/11

Since

5066f7cd0e010db46b42f8f08a33c10cb34f8726 r600g: add rv670 flushing workaround.

I am getting segfaults with openarena, nexuiz, etqw and a few mesa demos -

gltestperf,clearspd and ipers.

The bt of the segfault seems to repeat for ever.

Starting program: /home/andy/Src/Mesa-git/demos/src/demos/ipers [Thread debugging using libthread_db enabled] IperS V1.0 Written by David Bucciarelli (tech.hmw@plus.it) [New Thread 0xb726f700 (LWP 14143)]

Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb726f700 (LWP 14143)] r600_context_flush (ctx=0x8074e10) at r600_hw_context.c:1282 1282 { (gdb) bt #0 r600_context_flush (ctx=0x8074e10) at r600_hw_context.c:1282 #1 0xb6eeed3b in r600_context_flush_all (ctx=0x8074e10, flush_flags=128) at r600_hw_context.c:786 #2 0xb6eeef18 in r600_context_bo_flush (ctx=0x8074e10, flush_flags=33554496, flush_mask=0, rbo=0x83c1488) at r600_hw_context.c:814 #3 0xb6eef030 in r600_context_flush_dest_caches (ctx=0x8074e10) at r600_hw_context.c:1197 #4 0xb6eee833 in r600_context_flush (ctx=0x8074e10) at r600_hw_context.c:1298 #5 0xb6eeed3b in r600_context_flush_all (ctx=0x8074e10, flush_flags=128) at r600_hw_context.c:786 #6 0xb6eeef18 in r600_context_bo_flush (ctx=0x8074e10, flush_flags=33554496, flush_mask=0, rbo=0x83c1488) at r600_hw_context.c:814 #7 0xb6eef030 in r600_context_flush_dest_caches (ctx=0x8074e10) at r600_hw_context.c:1197 #8 0xb6eee833 in r600_context_flush (ctx=0x8074e10) at r600_hw_context.c:1298 #9 0xb6eeed3b in r600_context_flush_all (ctx=0x8074e10, flush_flags=128) at r600_hw_context.c:786 #10 0xb6eeef18 in r600_context_bo_flush (ctx=0x8074e10, flush_flags=33554496, flush_mask=0, rbo=0x83c1488) at r600_hw_context.c:814 #11 0xb6eef030 in r600_context_flush_dest_caches (ctx=0x8074e10) at r600_hw_context.c:1197 #12 0xb6eee833 in r600_context_flush (ctx=0x8074e10) at r600_hw_context.c:1298