linux-kernel - [PATCH] drm: flip cirrus driver status to "obsolete".

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Date:   Tue, 22 Nov 2016 10:58:24 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     David Airlie <airlied@...hat.com>, dri-devel@...ts.freedesktop.org,
        qemu-devel@...gnu.org
Cc:     Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm: flip cirrus driver status to "obsolete".

Also update Kconfig help text, explaining things:

Cirrus is obsolete, the hardware was designed in the 90ies
and can't keep up with todays needs.  More background:
https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/

Better alternatives are:
  - stdvga (DRM_BOCHS, qemu -vga std, default in qemu 2.2+)
  - qxl (DRM_QXL, qemu -vga qxl, works best with spice)
  - virtio (VIRTIO_GPU), qemu -vga virtio)

Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
 MAINTAINERS                    | 3 ++-
 drivers/gpu/drm/cirrus/Kconfig | 9 +++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 84dc747..feb34a3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4037,7 +4037,8 @@ M:	Dave Airlie <airlied@...hat.com>
 M:	Gerd Hoffmann <kraxel@...hat.com>
 L:	qemu-devel@...gnu.org
 T:	git git://git.kraxel.org/linux drm-qemu
-S:	Odd Fixes
+S:	Obsolete
+W:	https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
 F:	drivers/gpu/drm/cirrus/
 
 RADEON and AMDGPU DRM DRIVERS
diff --git a/drivers/gpu/drm/cirrus/Kconfig b/drivers/gpu/drm/cirrus/Kconfig
index 04b3c16..ca5c0f2 100644
--- a/drivers/gpu/drm/cirrus/Kconfig
+++ b/drivers/gpu/drm/cirrus/Kconfig
@@ -7,3 +7,12 @@ config DRM_CIRRUS_QEMU
 	 This is a KMS driver for emulated cirrus device in qemu.
 	 It is *NOT* intended for real cirrus devices. This requires
 	 the modesetting userspace X.org driver.
+
+	 Cirrus is obsolete, the hardware was designed in the 90ies
+	 and can't keep up with todays needs.  More background:
+	 https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
+
+	 Better alternatives are:
+	   - stdvga (DRM_BOCHS, qemu -vga std, default in qemu 2.2+)
+	   - qxl (DRM_QXL, qemu -vga qxl, works best with spice)
+	   - virtio (VIRTIO_GPU), qemu -vga virtio)
-- 
1.8.3.1