On Tue, Jan 8, 2013 at 10:32 AM, Chris Wilson <[email protected]> wrote:
> On Tue,  8 Jan 2013 09:33:57 +0100, Daniel Vetter <[email protected]> 
> wrote:
>> This could very well be caused by dirt left behind by the BIOS, so
>> tune it down to the debug level.
>
> If the issue is solely the one described, then it should be silence when
> we takeover, just like all the other error/debug status registers.

Good point, I'll check whether pimping gt_reset is good enough.

> DRM_DEBUG is a little too noisy for this, maybe we should look at
> trace_print or one of the other dynamic debugs for this class of info?

The downside of trace_printk is that it doesn't pop up in dmesg. If
all that reg checking starts to hurt, we might want to exclude the GT
range from it - iirc this seemed most useful for display enabling.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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