On Tue, Apr 10, 2012 at 01:34:11PM -0700, Jesse Barnes wrote: > On Tue, 10 Apr 2012 22:32:12 +0200 > Daniel Vetter <daniel@xxxxxxxx> wrote: > > > On Tue, Apr 10, 2012 at 09:52:40PM +0200, Jiri Slaby wrote: > > > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- > > > <TAbort- <MAbort- >SERR- <PERR- INTx- > > > > > > I tried 3.2 and 3.3. Although the spurious interrupts were always > > > there, they occurred with frequency lower by a magnitude (15 vs. 300 > > > after X starts). So I bisected that and it lead to a commit which > > > fixes bad tiling for me: > > > http://cgit.freedesktop.org/~ickle/linux-2.6/commit/?h=for-jiri&id=79710e6ccabdac80c65cd13b944695ecc3e42a9d > > > > Pipelined fencing is pretty much just broken and we'll completely rip it > > out in 3.5. Does this also happen with 3.4-rc2? > > Does INTx- stay that way? Or does it frequently read INTx+ if you > sample it a lot? If it stays as INTx-, then something other than the > GPU is getting stuck (though it's possible this could be related to > pipelined fencing, if the fences are programmed to point at some funky > memory space). Shot in the dark, let's disable msi a bit. Can you try the below patch? diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 785f67f..249d5fe 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -2071,6 +2071,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) else if (IS_GEN5(dev)) i915_ironlake_get_mem_freq(dev); +#if 0 /* On the 945G/GM, the chipset reports the MSI capability on the * integrated graphics even though the support isn't actually there * according to the published specs. It doesn't appear to function @@ -2084,6 +2085,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) */ if (!IS_I945G(dev) && !IS_I945GM(dev)) pci_enable_msi(dev->pdev); +#endif spin_lock_init(&dev_priv->gt_lock); spin_lock_init(&dev_priv->irq_lock); -- Daniel Vetter Mail: daniel@xxxxxxxx Mobile: +41 (0)79 365 57 48 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
