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audio: -audiodev command line option: documentation

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This patch adds documentation of an -audiodev command line option, that
deprecates the old QEMU_* environment variables for audio backend
configuration.  It's syntax is similar to existing options (-netdev,
-device, etc):

  -audiodev driver_name,property=value,...

Although now it's possible to specify multiple -audiodev options on
command line, multiple audio backends are not supported yet.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: ca5e761e58dcfaf591cf46080af3548551b42bb2.1552083282.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Kővágó, Zoltán 2019-03-08 23:34:14 +01:00 • committed by Gerd Hoffmann
parent 85bc58520c
commit f0b3d81152
2 changed files with 240 additions and 3 deletions
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7
qemu-deprecated.texi
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@ -60,6 +60,13 @@ Support for invalid topologies will be removed, the user must ensure
topologies described with -smp include all possible cpus, i.e.
@math{@var{sockets} * @var{cores} * @var{threads} = @var{maxcpus}}.
@subsection QEMU_AUDIO_ environment variables and -audio-help (since 4.0)
The ``-audiodev'' argument is now the preferred way to specify audio
backend settings instead of environment variables. To ease migration to
the new format, the ``-audiodev-help'' option can be used to convert
the current values of the environment variables to ``-audiodev'' options.
@section QEMU Machine Protocol (QMP) commands
@subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)