[Intel-gfx] [PATCH] drm/i915/debugfs: print more workaround registers

[Liu, Chuansheng]

Hi Chris,

> -----Original Message-----
> From: Chris Wilson <chris at chris-wilson.co.uk>
> Sent: Wednesday, March 11, 2020 5:25 PM
> To: Liu, Chuansheng <chuansheng.liu at intel.com>; intel-
> gfx at lists.freedesktop.org
> Subject: Re: [Intel-gfx] [PATCH] drm/i915/debugfs: print more workaround
> registers
> 
> Quoting Chuansheng Liu (2020-03-11 08:47:04)
> > In the node i915_wa_registers, we could print out
> > more information with whitelist, GT workaround and
> > engine workaround.
> 
> Who's the consumer? We've stopped using this file in igt.
For debugging convenience.

I am debugging some customer issues based on older kernel version, with this information,
we can more easily get to know if some HW WAs are missing in their version.

It helps a lot indeed. For example:
Customer is using 4.19.96, which missed your patch of fixing GPU hang:)

Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Sep 4 11:07:07 2019 +0100

    drm/i915: Restore relaxed padding (OCL_OOB_SUPPRES_ENABLE) for skl+

Best Regards
Chuansheng