From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>,
Ben Widawsky <benjamin.widawsky@intel.com>,
Intel GFX <intel-gfx@lists.freedesktop.org>,
Art Runyan <arthur.j.runyan@intel.com>,
Ben Widawsky <ben@bwidawsk.net>
Subject: Re: [PATCH] drm/i915/bdw: Don't allow the FBC base to be 0
Date: Fri, 2 May 2014 16:00:25 +0300 [thread overview]
Message-ID: <20140502130024.GT18465@intel.com> (raw)
In-Reply-To: <20140502083811.GA21695@nuc-i3427.alporthouse.com>
On Fri, May 02, 2014 at 09:38:11AM +0100, Chris Wilson wrote:
> On Fri, May 02, 2014 at 11:19:27AM +0300, Ville Syrjälä wrote:
> > On Thu, May 01, 2014 at 06:47:54PM -0700, Ben Widawsky wrote:
> > > "Restriction :
> > > The offset must be greater than 4K bytes, avoiding the first 4KB of
> > > stolen memory."
> >
> > Isn't this a more generic issue that we must avoid the first 4k? If so
> > I think we should just reserve the first 4k permanently at driver init
> > time.
>
> What? On many machines the vga framebuffer is allocated from offset 0. I
> think some explanation is in order.
WaSkipStolenMemoryFirstPage
--
Ville Syrjälä
Intel OTC
next prev parent reply other threads:[~2014-05-02 13:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 1:47 [PATCH] drm/i915/bdw: Don't allow the FBC base to be 0 Ben Widawsky
2014-05-02 8:19 ` Ville Syrjälä
2014-05-02 8:38 ` Chris Wilson
2014-05-02 13:00 ` Ville Syrjälä [this message]
2014-05-02 17:00 ` Ben Widawsky
2014-05-02 20:35 ` Chris Wilson
2014-05-03 1:48 ` Ben Widawsky
2014-05-15 14:05 ` Ville Syrjälä
2014-05-15 14:45 ` Damien Lespiau
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