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[PULL 09/10] hw/misc: deprecate the 'sga' device

From: Gerd Hoffmann
Subject: [PULL 09/10] hw/misc: deprecate the 'sga' device
Date: Tue, 2 Nov 2021 17:26:18 +0100

From: Daniel P. Berrangé <berrange@redhat.com>

This is obsolete since SeaBIOS 1.11.0 introduced native support for
sending messages to the serial console. The new support can be
activated using -machine graphics=off on x86 targets.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20210909123219.862652-1-berrange@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
 hw/misc/sga.c             |  2 ++
 docs/about/deprecated.rst | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/hw/misc/sga.c b/hw/misc/sga.c
index 4dbe6d78f9e5..1d04672b013b 100644
--- a/hw/misc/sga.c
+++ b/hw/misc/sga.c
@@ -30,6 +30,7 @@
 #include "hw/loader.h"
 #include "qemu/module.h"
 #include "qom/object.h"
+#include "qemu/error-report.h"
 #define SGABIOS_FILENAME "sgabios.bin"
@@ -42,6 +43,7 @@ struct ISASGAState {
 static void sga_realizefn(DeviceState *dev, Error **errp)
+    warn_report("-device sga is deprecated, use -machine graphics=off");
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index be19317470a1..25b7ec8d92d9 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -313,6 +313,16 @@ full SCSI support.  Use virtio-scsi instead when SCSI 
passthrough is required.
 Note this also applies to ``-device virtio-blk-pci,scsi=on|off``, which is an
+``-device sga`` (since 6.2)
+The ``sga`` device loads an option ROM for x86 targets which enables
+SeaBIOS to send messages to the serial console. SeaBIOS 1.11.0 onwards
+contains native support for this feature and thus use of the option
+ROM approach is obsolete. The native SeaBIOS support can be activated
+by using ``-machine graphics=off``.
 Block device options

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