From: Gerd Hoffmann <kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Pekka Paalanen <ppaalanen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Daniel Vetter
<daniel.vetter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
open list <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: Re: [RfC PATCH] drm: fourcc byteorder: brings header file comments in line with reality.
Date: Mon, 10 Apr 2017 16:17:27 +0200 [thread overview]
Message-ID: <1491833847.30990.77.camel@redhat.com> (raw)
In-Reply-To: <20170410161214.305f5daf@eldfell>
Hi,
> which software have you used as representative of "reality"?
ppc64 (big endian) virtual machine, running with qemu stdvga & bochs-drm
driver. Xorg with modesetting driver uses DRM_FORMAT_XRGB8888 (one and
only format supported by bochs-drm), and we have to interpret that in
bigendian byte order on the host side to get a correct display.
Didn't try wayland. Can do, but will take a while. Don't have a
wayland-capable guest install at hand, and installing one takes a while
because I don't have a physical pseries and emulation is slooooww.
> To solve that problem, we would like to know if anything existing would
> break for each possible solution, but no developers using BE have really
> turned up.
That is part of the problem.
And even ppc is moving to little endian these days ...
cheers,
Gerd
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
WARNING: multiple messages have this Message-ID (diff)
From: Gerd Hoffmann <kraxel@redhat.com>
To: Pekka Paalanen <ppaalanen@gmail.com>
Cc: dri-devel@lists.freedesktop.org,
open list <linux-kernel@vger.kernel.org>,
amd-gfx@lists.freedesktop.org,
Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [RfC PATCH] drm: fourcc byteorder: brings header file comments in line with reality.
Date: Mon, 10 Apr 2017 16:17:27 +0200 [thread overview]
Message-ID: <1491833847.30990.77.camel@redhat.com> (raw)
In-Reply-To: <20170410161214.305f5daf@eldfell>
Hi,
> which software have you used as representative of "reality"?
ppc64 (big endian) virtual machine, running with qemu stdvga & bochs-drm
driver. Xorg with modesetting driver uses DRM_FORMAT_XRGB8888 (one and
only format supported by bochs-drm), and we have to interpret that in
bigendian byte order on the host side to get a correct display.
Didn't try wayland. Can do, but will take a while. Don't have a
wayland-capable guest install at hand, and installing one takes a while
because I don't have a physical pseries and emulation is slooooww.
> To solve that problem, we would like to know if anything existing would
> break for each possible solution, but no developers using BE have really
> turned up.
That is part of the problem.
And even ppc is moving to little endian these days ...
cheers,
Gerd
next prev parent reply other threads:[~2017-04-10 14:17 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-10 10:12 [RfC PATCH] drm: fourcc byteorder: brings header file comments in line with reality Gerd Hoffmann
2017-04-10 10:12 ` Gerd Hoffmann
[not found] ` <20170410101202.19229-1-kraxel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-04-10 12:02 ` Daniel Vetter
2017-04-10 12:02 ` Daniel Vetter
[not found] ` <20170410120212.3igweieunldjcjuy-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>
2017-04-10 16:28 ` Alex Deucher
2017-04-10 16:28 ` Alex Deucher
2017-04-10 13:12 ` Pekka Paalanen
2017-04-10 13:12 ` Pekka Paalanen
2017-04-10 14:17 ` Gerd Hoffmann [this message]
2017-04-10 14:17 ` Gerd Hoffmann
[not found] ` <1491833847.30990.77.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-04-10 14:45 ` Ilia Mirkin
2017-04-10 14:45 ` Ilia Mirkin
[not found] ` <CAKb7Uvgidg9_RkU0NJY7qwhcf0_Hyc0EGzWmvk0qqaf_YDW97g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-10 16:26 ` Alex Deucher
2017-04-10 16:26 ` Alex Deucher
2017-04-10 15:09 ` Pekka Paalanen
2017-04-10 15:09 ` Pekka Paalanen
2017-04-10 16:10 ` Ilia Mirkin
2017-04-10 16:10 ` Ilia Mirkin
[not found] ` <CAKb7UvhbgSGwx-2EsrQrHmghzYqO9AhRQ10bDWKfdcXHc3fJeQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-04-11 7:31 ` Pekka Paalanen
2017-04-11 7:31 ` Pekka Paalanen
2017-04-11 11:23 ` Gerd Hoffmann
2017-04-11 11:23 ` Gerd Hoffmann
[not found] ` <1491909833.30990.93.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-04-13 7:44 ` Pekka Paalanen
2017-04-13 7:44 ` Pekka Paalanen
2017-04-11 14:18 ` Ilia Mirkin
2017-04-11 14:18 ` Ilia Mirkin
2017-04-17 6:43 ` Ilia Mirkin
2017-04-18 2:53 ` Michel Dänzer
2017-04-18 2:53 ` Michel Dänzer
2017-04-18 5:04 ` Ilia Mirkin
2017-04-18 5:04 ` Ilia Mirkin
2017-04-18 5:58 ` Michel Dänzer
2017-04-18 5:58 ` Michel Dänzer
[not found] ` <fe944ecc-3ca4-26d8-77bc-873a53dcbb3f-otUistvHUpPR7s880joybQ@public.gmane.org>
2017-04-18 10:14 ` Gerd Hoffmann
2017-04-18 10:14 ` Gerd Hoffmann
[not found] ` <1492510440.27392.27.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-04-19 1:01 ` Michel Dänzer
2017-04-19 1:01 ` Michel Dänzer
2017-04-19 3:19 ` Ilia Mirkin
2017-04-19 3:19 ` Ilia Mirkin
2017-04-19 3:28 ` Ilia Mirkin
2017-04-19 3:28 ` Ilia Mirkin
[not found] ` <4230c093-6a8a-76d6-dce8-f9b2300fa70f-otUistvHUpPR7s880joybQ@public.gmane.org>
2017-04-19 7:09 ` Pekka Paalanen
2017-04-19 7:09 ` Pekka Paalanen
2017-04-19 12:34 ` Gerd Hoffmann
2017-04-19 12:34 ` Gerd Hoffmann
2017-04-18 10:00 ` Gerd Hoffmann
2017-04-18 10:00 ` Gerd Hoffmann
[not found] ` <1492509617.27392.19.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-04-18 11:18 ` Pekka Paalanen
2017-04-18 11:18 ` Pekka Paalanen
2017-04-18 13:39 ` Gerd Hoffmann
2017-04-18 13:39 ` Gerd Hoffmann
[not found] ` <1492522793.27392.55.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-04-18 14:01 ` Pekka Paalanen
2017-04-18 14:01 ` Pekka Paalanen
2017-04-18 20:50 ` Gerd Hoffmann
2017-04-18 20:50 ` Gerd Hoffmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1491833847.30990.77.camel@redhat.com \
--to=kraxel-h+wxahxf7alqt0dzr+alfa@public.gmane.org \
--cc=amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org \
--cc=daniel.vetter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
--cc=dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=ppaalanen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.