linux-kernel - Re: [PATCH 1/4] fbdev: Drop FBINFO_CAN_FORCE

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Date:   Mon, 10 Sep 2018 14:48:43 +0200
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:     Daniel Vetter <daniel.vetter@...ll.ch>,
        DRI Development <dri-devel@...ts.freedesktop.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ben Skeggs <bskeggs@...hat.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Alexander Kapshuk <alexander.kapshuk@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Thierry Reding <treding@...dia.com>,
        David Lechner <david@...hnology.com>,
        nouveau@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        Daniel Vetter <daniel.vetter@...el.com>
Subject: Re: [PATCH 1/4] fbdev: Drop FBINFO_CAN_FORCE_OUTPUT flag


On 08/22/2018 10:54 AM, Daniel Vetter wrote:
> This was only added for the drm's fbdev emulation support, so that it
> would try harder to show the Oops.
> 
> Unfortunately this never really worked reliably, and in practice ended
> up pushing the real Oops off the screen due to plentyfull locking,
> sleep-while-atomic and other issues. So we removed all that support
> from the fbdev emulation a while back. Aside: We've also removed the
> kgdb support, for similar reasons.
> 
> Since it's such a small patch I figured I don't split this up into the
> usual 3-phase removal.
> 
> Cc: Ben Skeggs <bskeggs@...hat.com>
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Hans de Goede <hdegoede@...hat.com>
> Cc: Daniel Vetter <daniel.vetter@...ll.ch>
> Cc: Alexander Kapshuk <alexander.kapshuk@...il.com>
> Cc: Kees Cook <keescook@...omium.org>
> Cc: Thierry Reding <treding@...dia.com>
> Cc: David Lechner <david@...hnology.com>
> Cc: nouveau@...ts.freedesktop.org
> Cc: linux-fbdev@...r.kernel.org
> Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>

Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics