From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Paulo Zanoni <przanoni@gmail.com>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: flush system agent TLBs on SNB so we can WC map the PTEs
Date: Thu, 11 Oct 2012 16:54:51 -0700 [thread overview]
Message-ID: <20121011165451.01980d55@jbarnes-desktop> (raw)
In-Reply-To: <CA+gsUGQf6wrom339N9gyVqVdBihMxb1_U8y3zOuTT41_QKQeLw@mail.gmail.com>
On Thu, 11 Oct 2012 20:29:47 -0300
Paulo Zanoni <przanoni@gmail.com> wrote:
> Hi
>
> 2012/10/11 Jesse Barnes <jbarnes@virtuousgeek.org>:
> > I've only lightly tested this so far, but the corruption seems to be
> > gone if I write the GFX_FLSH_CNTL reg after binding an object. This
> > register should control the TLB for the system agent, which is what CPU
> > mapped objects will go through.
> >
> > Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
>
> I'm not sure if this is the patch you asked me to test on IRC, but,
> well this is the patch I tested :)
>
> I tested it on HSW on top of dinq + some other patches. Booted the
> machine, ran mostly xfterm4 under Xfce, but I also ran firefox,
> gnome-shell and restarted X a few times. No GPU hangs so far. I'm
> testing this for about 3-4 hours.
>
> I do have to say that I could not find this register on the HSW
> documentation, but I also did no see any "Unclaimed write" messages
> containing the 101008 address... I'm a little confused.
>
> And the interesting thing: intel_gpu_tools is useless now. I keep
> getting "Couldn't map MMIO region: Resource temporarily unavailable".
> Do you see this too?
No I haven't seen that, I ran some tests today with the tip of the tree
too... Dunno why the resource files would return EBUSY? Maybe because
a driver is bound?
--
Jesse Barnes, Intel Open Source Technology Center
next prev parent reply other threads:[~2012-10-11 23:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 17:32 [PATCH] drm/i915: flush system agent TLBs on SNB so we can WC map the PTEs Jesse Barnes
2012-10-11 23:29 ` Paulo Zanoni
2012-10-11 23:54 ` Jesse Barnes [this message]
2012-10-12 7:54 ` Dave Airlie
2012-10-12 8:18 ` Daniel Vetter
2012-10-12 17:21 ` Paulo Zanoni
2012-10-16 19:11 ` Paulo Zanoni
2012-10-16 19:50 ` Daniel Vetter
2012-10-22 12:46 ` Daniel Vetter
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