On Wed, 20 Oct 2010 11:07:20 +0200, Alexey Fisher <[email protected]> wrote: > Hallo all, > > I get fallowing error in my log: > [ 6657.465805] [drm:i915_gem_mmap_gtt_ioctl] *ERROR* Attempting to mmap > a purgeable buffer > [ 6657.465851] [drm:i915_gem_mmap_gtt_ioctl] *ERROR* Attempting to mmap > a purgeable buffer > [ 6657.465907] [drm:i915_gem_mmap_gtt_ioctl] *ERROR* Attempting to mmap > a purgeable buffer > > das it mean any thing for you? do i need to bisect it? > I use current 2.6.36-rc8-01141-ga5ffe0a from intel drm next.
It's warning that userspace is breaking the rules and trying to use a buffer it has declared no longer in use. The challenge is to find the scenario that is triggering this *userspace* bug. Currently, purgeable is usually only set on the userspace bo cache, so this means that we are continuing to use a freed buffer. Disabling (or marking the cache as NO_ACCESS) and valgrinding would be a useful step. Or just kill the userspace cache and implement a kernel uncached page cache... Less code, more performance, everyone is happy... -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
