On Wed, Mar 25, 2015 at 1:17 PM, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Wed, Mar 25, 2015 at 12:42:46PM -0400, Josh Boyer wrote: >> On Wed, Mar 25, 2015 at 11:53 AM, Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> wrote: >> > On Wed, Mar 25, 2015 at 11:50 AM, Daniel Vetter <daniel@xxxxxxxx> wrote: >> >> On Wed, Mar 25, 2015 at 11:37:35AM -0400, Josh Boyer wrote: >> >>> On Wed, Mar 25, 2015 at 10:00 AM, Daniel Vetter <daniel@xxxxxxxx> wrote: >> >>> > On Wed, Mar 25, 2015 at 09:11:17AM -0400, Josh Boyer wrote: >> >>> >> On Wed, Mar 25, 2015 at 4:54 AM, Daniel Vetter <daniel@xxxxxxxx> wrote: >> >>> >> >> >> commit f55548b5af87ebfc586ca75748947f1c1b1a4a52 >> >>> >> >> >> Author: Damien Lespiau <damien.lespiau@xxxxxxxxx> >> >>> >> >> >> Date: Thu Feb 5 18:30:20 2015 +0000 >> >>> >> >> >> >> >>> >> >> >> drm/i915: Don't try to reference the fb in get_initial_plane_config() >> >>> >> >> >> >> >>> >> >> >> From linux-next? >> >>> >> >> > >> >>> >> >> > Yes, building now. Will let you know as soon as I test it on both machines. >> >>> >> >> >> >>> >> >> OK, with that commit applied I no longer get the kref.h splat and the >> >>> >> >> NUC machine boots headless. I still see the backtrace below on both >> >>> >> >> the NUC and the macbook. I have a copy of it with drm.debug=0xff from >> >>> >> >> the NUC here: >> >>> >> >> >> >>> >> >> https://jwboyer.fedorapeople.org/pub/nuc-drm-debug-ff-with-fixes.txt >> >>> >> >> >> >>> >> >> Getting better at least :). >> >>> >> > >> >>> >> > On top of what you currently have please also cherry-pick >> >>> >> > >> >>> >> > commit fb9981aa675eb7b398849915364916fd98833cfa >> >>> >> > Author: Damien Lespiau <damien.lespiau@xxxxxxxxx> >> >>> >> > Date: Thu Feb 5 19:24:25 2015 +0000 >> >>> >> > >> >>> >> > drm/i915: Fix atomic state when reusing the firmware fb >> >>> >> > >> >>> >> > from -next. Let's hope this terminates eventually ;-) >> >>> >> >> >>> >> Hm. That one doesn't apply cleanly. I think because it needs: >> >>> >> >> >>> >> From 2d14030b1a9d0e89cfdca6f16851e2eac8cb4de0 Mon Sep 17 00:00:00 2001 >> >>> >> From: Damien Lespiau <damien.lespiau@xxxxxxxxx> >> >>> >> Date: Thu, 5 Feb 2015 17:22:18 +0000 >> >>> >> Subject: drm/i915: Store the initial framebuffer in initial_plane_config >> >>> >> >> >>> >> first. Do you want me to grab both, or should I try and figure out >> >>> >> how to backport fb9981aa67 without it? >> >>> > >> >>> > Oops missed that. The active ingredient is setting crtc->primary->state->crtc like this: >> >>> > -Daniel >> >>> > >> >>> > >> >>> > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c >> >>> > index 1c12262029fb..bfc14a6046ea 100644 >> >>> > --- a/drivers/gpu/drm/i915/intel_display.c >> >>> > +++ b/drivers/gpu/drm/i915/intel_display.c >> >>> > @@ -2439,6 +2439,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc, >> >>> > return; >> >>> > >> >>> > if (intel_alloc_plane_obj(intel_crtc, plane_config)) { >> >>> > + intel_crtc->base.primary->state->crtc = &intel_crtc->base; >> >>> > update_state_fb(intel_crtc->base.primary); >> >>> > return; >> >>> > } >> >>> > @@ -2469,6 +2470,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc, >> >>> > >> >>> > drm_framebuffer_reference(c->primary->fb); >> >>> > intel_crtc->base.primary->fb = c->primary->fb; >> >>> > + intel_crtc->base.primary->state->crtc = &intel_crtc->base; >> >>> > obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe); >> >>> > break; >> >>> > } >> >>> >> >>> Hm. So I used your patch above. The macbook boots fine and all the >> >>> oops/WARNS are gone except the audio one that was unrelated and >> >>> present before all of this. >> >>> >> >>> However, the NUC is back to not booting without HDMI plugged in. I >> >>> did the drm.debug=0xff+blacklist/insmod trick again and put the >> >>> results up here: >> >>> >> >>> https://jwboyer.fedorapeople.org/pub/vetters.txt >> >>> >> >>> The frontbuffer splat is back now. >> >>> >> >>> I confirmed multiple times that the NUC boots fine with the kernel >> >>> that doesn't include the above patch but has the other two included >> >>> (albeit with the drm_atomic WARN still). >> >>> >> >>> Not sure what to make of this one. >> >> >> >> Yeah that fail looks like we're freeing an fb that's still in use. >> >> Hilarity happens and since that happens under console_lock at boot-up your >> >> machine dies. >> >> >> >> Does that machine die the same way in drm-intel-nightly/linux-next? >> > >> > I'll try that a bit later today. Out of sheer curiosity, I folded >> > commit5ba76c41e55c (drm/i915: Put update_state_fb() next to the fb >> > update) into the patch above and kicked off a build. The theory is >> > that we're picking up a bunch of other changes right in that range of >> > commits, why not try one more. I'll let you know if that fixes >> > anything. Otherwise, I'll try building drm-intel-nightly and/or >> > linux-next after that. >> >> The drm-intel-nightly build finished first. It boots without HDMI >> plugged in, but it has pretty much the same splats as the previous >> kernel. Confused. Full log here: >> >> https://jwboyer.fedorapeople.org/pub/intel-nightly.txt >> >> I don't have much hope for my other build. > > Yeah that's at least good news for the theory I've been cooking meanwhile. > Can you try the below diff (on top of next/nightly)? For the current > cherry-pick pile on top of 4.0-rc you'd need to prepend intel_crtc->base. > to primary->... > > Thanks, Daniel > > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index ceb2e61b4c91..cb508542c6ab 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -2594,6 +2594,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc, > > primary->fb = &plane_config->fb->base; > primary->state->crtc = &intel_crtc->base; > + primary->crtc = &intel_crtc->base; > update_state_fb(primary); > > return; > @@ -2627,6 +2628,7 @@ intel_find_plane_obj(struct intel_crtc *intel_crtc, > drm_framebuffer_reference(c->primary->fb); > primary->fb = c->primary->fb; > primary->state->crtc = &intel_crtc->base; > + primary->crtc = &intel_crtc->base; > update_state_fb(intel_crtc->base.primary); > obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe); > break; Hey, that seems to do the trick on the NUC machine. Boots without HDMI connected and there are no backtraces. Nice! Let me go and munge it around for a backport on top of -rc5 with the rest of the pile and see if both the macbook and NUC machines work then. Will be a bit for it to build. josh _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
