linux-kernel - Re: [PATCH] drm/i915: Fix BO alloc flags

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Message-ID: <20251210160150.4dc8f146@fedora>
Date: Wed, 10 Dec 2025 16:01:50 +0100
From: Boris Brezillon <boris.brezillon@...labora.com>
To: Tvrtko Ursulin <tursulin@...ulin.net>
Cc: Loïc Molinari <loic.molinari@...labora.com>, David
 Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Jani Nikula
 <jani.nikula@...ux.intel.com>, Joonas Lahtinen
 <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>,
 Mikołaj Wasiak <mikolaj.wasiak@...el.com>, Andi Shyti
 <andi.shyti@...ux.intel.com>, Christopher Healy <healych@...zon.com>,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 intel-gfx@...ts.freedesktop.org, kernel@...labora.com, Chaitanya Kumar
 Borah <chaitanya.kumar.borah@...el.com>
Subject: Re: [PATCH] drm/i915: Fix BO alloc flags

On Wed, 10 Dec 2025 15:08:02 +0100
Tvrtko Ursulin <tursulin@...ulin.net> wrote:

> On 10/12/2025 12:09, Loïc Molinari wrote:
> > I915_BO_ALLOC_NOTHP must be added to the I915_BO_ALLOC_FLAGS mask in
> > order to pass GEM_BUG_ON() valid flags checks.
> >
> > Reported-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@...el.com>
> > Closes: https://lore.kernel.org/intel-gfx/d73adfa8-d61b-46b3-9385-dde53d8db8ad@intel.com/
> > Fixes: a8a9a590221c ("drm/i915: Use huge tmpfs mountpoint helpers")
> > Suggested-by: Tvrtko Ursulin <tursulin@...ulin.net>
> > Signed-off-by: Loïc Molinari <loic.molinari@...labora.com>
> > ---
> >   drivers/gpu/drm/i915/gem/i915_gem_object_types.h | 1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > index f94409e8ec4c..35d4c7d0c579 100644
> > --- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > +++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > @@ -363,6 +363,7 @@ struct drm_i915_gem_object {
> >   			     I915_BO_ALLOC_PM_EARLY | \
> >   			     I915_BO_ALLOC_GPU_ONLY | \
> >   			     I915_BO_ALLOC_CCS_AUX | \
> > +			     I915_BO_ALLOC_NOTHP | \
> >   			     I915_BO_PREALLOC)
> >   #define I915_BO_READONLY          BIT(10)
> >   #define I915_TILING_QUIRK_BIT     11 /* unknown swizzling; do not release! */  
> 
> Acked-by: Tvrtko Ursulin <tvrtko.ursulin@...lia.com>
> 
> It is passing BAT so I think it is fine to go ahead and merge it. Of 
> course via the same branch where the breakage is ie. drm-misc.

Pushed to drm-misc-next.