linux-kernel - Re: [PATCH] [v3] drm: amd: dc: don't use FP math when Kcov is enabled

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Message-ID: <632dceb6-27e5-869b-46a9-6b11944204fc@daenzer.net>
Date:   Tue, 14 Aug 2018 10:54:54 +0200
From:   Michel Dänzer <michel@...nzer.net>
To:     Arnd Bergmann <arnd@...db.de>, alexdeucher@...il.com
Cc:     "David (ChunMing) Zhou" <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        amd-gfx@...ts.freedesktop.org, Shirish S <shirish.s@....com>,
        Jerry.Zuo@....com, dri-devel <dri-devel@...ts.freedesktop.org>,
        Alex Deucher <alexander.deucher@....com>,
        Harry Wentland <Harry.Wentland@....com>,
        Christian König <christian.koenig@....com>
Subject: Re: [PATCH] [v3] drm: amd: dc: don't use FP math when Kcov is enabled

On 2018-08-13 05:23 PM, Arnd Bergmann wrote:
> On Mon, Aug 13, 2018 at 4:49 PM Alex Deucher <alexdeucher@...il.com> wrote:
>>
>> On Sun, Aug 12, 2018 at 3:55 AM Christian König
>> <ckoenig.leichtzumerken@...il.com> wrote:
>>> Adding Harry as well.
>>> Am 11.08.2018 um 17:54 schrieb Arnd Bergmann:
>>>>
>>>> Fixes: bf2e2e2e0ea9 ("drm/amd/display: Limit DCN to x86 arch")
>>>> Fixes: 4841203102a3 ("drm/amdgpu/display: Replace CONFIG_DRM_AMD_DC_DCN1_0 with CONFIG_X86")
>>
>> Maybe it would be better to revert 4841203102a3 so we can limit the
>> scope of this to DCN support.
> 
> That would help, but we would still require the patch at
> https://patchwork.kernel.org/patch/10090227/ or something else to avoid
> broken randconfig builds.

FWIW, please don't revert 4841203102a3 in a way which allows
CONFIG_DRM_AMD_DC_DCN1_0 to be accidentally disabled on X86 again. If it
is reinstated, it should be strictly derived from other options, not
changeable by the user.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer