Re: [PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb helpers

From	Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Newsgroups	linux.kernel
Subject	Re: [PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb helpers
Date	2017-07-03 11:10 +0200
Message-ID	<tZ5wK-7r5-17@gated-at.bofh.it> (permalink)
References	<tYV4l-88R-7@gated-at.bofh.it> <tZ4Km-6Tf-11@gated-at.bofh.it> <tZ53I-70B-13@gated-at.bofh.it> <tZ5n4-78c-45@gated-at.bofh.it>
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On 03/07/17 09:55, Gerd Hoffmann wrote:

>   Hi,
> 
>> Hopefully Gerd has experience using bochs_drm with other non-x86
>> systems
>> and can comment further.
> 
> Just pushed to drm-misc-next, fix is correct.  bochs video memory is a
> pci bar, and the framebuffer is stored there.
> 
> Using sys instead of cfb is probably a leftover from cirrus, where the
> framebuffer actually in a shadow copy in system ram, due to the low
> amout of (pci) video memory.

Great, thanks a lot! Whilst investigating this I noticed that there are
quite a few reports of having to blacklist bochs_drm (particularly on
Xen HVM) so it would be interesting to know if this fix improves things
there too.

ATB,

Mark.

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[PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb helpers Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> - 2017-07-03 00:00 +0200
  Re: [PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb  helpers Daniel Vetter <daniel@ffwll.ch> - 2017-07-03 10:20 +0200
    Re: [PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb  helpers Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> - 2017-07-03 10:40 +0200
      Re: [PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb  helpers Gerd Hoffmann <kraxel@redhat.com> - 2017-07-03 11:00 +0200
        Re: [PATCH] drm/bochs: switch fb_ops over to use drm_fb_helper_cfb  helpers Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> - 2017-07-03 11:10 +0200

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