From: Daniel Vetter <daniel@ffwll.ch>
To: Chris Wilson <chris@chris-wilson.co.uk>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Subject: Re: [PATCH 2/4] drm/i915: prevent tiling changes on framebuffer backing storage
Date: Thu, 10 Oct 2013 00:02:17 +0200 [thread overview]
Message-ID: <20131009220217.GS8303@phenom.ffwll.local> (raw)
In-Reply-To: <20131009212939.GB1604@nuc-i3427.alporthouse.com>
On Wed, Oct 09, 2013 at 10:29:39PM +0100, Chris Wilson wrote:
> On Wed, Oct 09, 2013 at 09:23:52PM +0200, Daniel Vetter wrote:
> > Assuming that all framebuffer related metadata is invariant simplifies
> > our userspace input data checking. And current userspace always first
> > updates the tiling of an object before creating a framebuffer with it.
>
> Userspace already changes the tiling layout whilst keeping the fb id.
How exactly does that work? You can't really change the fb pitch without
creating a new one ... That leaves switching from tiled to untiled and
back I think.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
next prev parent reply other threads:[~2013-10-09 22:01 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-09 19:23 [PATCH 0/4] framebuffer_init checks Daniel Vetter
2013-10-09 19:23 ` [PATCH 1/4] drm/i915: grab dev->struct_mutex around framebuffer_init Daniel Vetter
2013-10-09 19:23 ` [PATCH 2/4] drm/i915: prevent tiling changes on framebuffer backing storage Daniel Vetter
2013-10-09 21:29 ` Chris Wilson
2013-10-09 22:02 ` Daniel Vetter [this message]
2013-10-09 22:09 ` Daniel Vetter
2013-10-10 10:53 ` Ville Syrjälä
2013-10-09 19:23 ` [PATCH 3/4] drm/i915: Use unsigned long for obj->user_pin_count Daniel Vetter
2013-10-10 8:56 ` Ville Syrjälä
2013-10-10 8:59 ` Daniel Vetter
2013-10-10 11:29 ` [PATCH] " Daniel Vetter
2013-10-10 11:48 ` Chris Wilson
2013-10-10 12:46 ` Daniel Vetter
2013-10-10 12:48 ` Chris Wilson
2013-10-09 19:23 ` [PATCH 4/4] drm/i915: check gem bo size when creating framebuffers Daniel Vetter
2013-10-09 19:55 ` [PATCH] " Daniel Vetter
2013-10-10 11:42 ` [PATCH 0/4] framebuffer_init checks Ville Syrjälä
2013-10-16 20:08 ` Daniel Vetter
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