On Sun, Feb 08, 2015 at 03:27:13PM -0800, Sean V Kelley wrote:
>
>
> On 01/16/2015 08:05 PM, Daniel Vetter wrote:
> > On Thu, Jan 15, 2015 at 08:44:00PM +0000, Chris Wilson wrote:
> >> On Thu, Jan 15, 2015 at 08:36:15PM +0100, Daniel Vetter wrote:
> >>> On Wed, Jan 14, 2015 at 9:34 PM, Chris Wilson
> >>> <chris@xxxxxxxxxxxxxxxxxx> wrote:
> >>>> This (partially) reverts
> >>>>
> >>>> commit 5537252b6b6d71fb1a8ed7395a8e5babf91953fd Author: Chris
> >>>> Wilson <chris@xxxxxxxxxxxxxxxxxx> Date: Tue Mar 25 13:23:06
> >>>> 2014 +0000
> >>>>
> >>>> drm/i915: Invalidate our pages under memory pressure
> >>>
> >>> Shouldn't we also revert the hunk in i915_gem_free_objects?
> >>> Without the truncate vs. invalidate disdinction it seems to
> >>> have lost it's reason for existence ...
> >>
> >> No, setting MADV_DONTNEED has other nice properties during
> >> put_pages() - I think it is useful in its own right, for example
> >> that is where my page stealing code goes...
> >
> > Well right now I can't make sense of this bit any more (tbh I
> > didn't with the other code either, but overlooked that while
> > reviewing). When it's just there for future work but atm dead code
> > I prefer for it to get removed. -Daniel
>
>
> So can we also revert the hunk in i915_gem_free_objects? I would like
> to get this patch merged, it looks like that is the primary concern.
A problem I have is that the test written to hit the exact condition
considered in the changelog does not ellict the bug.
Can you test whether
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 39e032615b31..6269204ba16f 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1030,6 +1030,7 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas,
/* update for the implicit flush after a batch */
obj->base.write_domain &= ~I915_GEM_GPU_DOMAINS;
}
+ obj->dirty = 1;
if (entry->flags & EXEC_OBJECT_NEEDS_FENCE) {
i915_gem_request_assign(&obj->last_fenced_req, req);
if (entry->flags & __EXEC_OBJECT_HAS_FENCE) {
makes the bug go away. If so, I think the bug is in the caller not
setting reloc domains correctly.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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