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d18572dd9a
These options likely do not work as expected as soon as the user tries to use more than one network interface at once. The parameters have been marked as deprecated since QEMU v2.6, so users had plenty of time to move their scripts to the new syntax. Time to remove the old parameters now. Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Acked-by: Peter Krempa <pkrempa@redhat.com> Acked-by: Ján Tomko <jtomko@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
142 lines
4.8 KiB
Plaintext
142 lines
4.8 KiB
Plaintext
@node Deprecated features
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@appendix Deprecated features
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In general features are intended to be supported indefinitely once
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introduced into QEMU. In the event that a feature needs to be removed,
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it will be listed in this appendix. The feature will remain functional
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for 2 releases prior to actual removal. Deprecated features may also
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generate warnings on the console when QEMU starts up, or if activated
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via a monitor command, however, this is not a mandatory requirement.
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Prior to the 2.10.0 release there was no official policy on how
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long features would be deprecated prior to their removal, nor
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any documented list of which features were deprecated. Thus
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any features deprecated prior to 2.10.0 will be treated as if
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they were first deprecated in the 2.10.0 release.
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What follows is a list of all features currently marked as
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deprecated.
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@section Build options
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@subsection GTK 2.x
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Previously QEMU has supported building against both GTK 2.x
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and 3.x series APIs. Support for the GTK 2.x builds will be
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discontinued, so maintainers should switch to using GTK 3.x,
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which is the default.
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@subsection SDL 1.2
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Previously QEMU has supported building against both SDL 1.2
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and 2.0 series APIs. Support for the SDL 1.2 builds will be
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discontinued, so maintainers should switch to using SDL 2.0,
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which is the default.
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@section System emulator command line arguments
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@subsection -no-kvm (since 1.3.0)
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The ``-no-kvm'' argument is now a synonym for setting
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``-machine accel=tcg''.
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@subsection -usbdevice (since 2.10.0)
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The ``-usbdevice DEV'' argument is now a synonym for setting
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the ``-device usb-DEV'' argument instead. The deprecated syntax
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would automatically enable USB support on the machine type.
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If using the new syntax, USB support must be explicitly
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enabled via the ``-machine usb=on'' argument.
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@subsection -fsdev handle (since 2.12.0)
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The ``handle'' fsdev backend does not support symlinks and causes the 9p
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filesystem in the guest to fail a fair amount of tests from the PJD POSIX
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filesystem test suite. Also it requires the CAP_DAC_READ_SEARCH capability,
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which is not the recommended way to run QEMU. This backend should not be
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used and it will be removed with no replacement.
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@subsection -no-frame (since 2.12.0)
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The @code{--no-frame} argument works with SDL 1.2 only. The other user
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interfaces never implemented this in the first place. So this will be
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removed together with SDL 1.2 support.
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@subsection -virtioconsole (since 3.0.0)
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Option @option{-virtioconsole} has been replaced by
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@option{-device virtconsole}.
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@subsection -clock (since 3.0.0)
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The @code{-clock} option is ignored since QEMU version 1.7.0. There is no
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replacement since it is not needed anymore.
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@subsection -enable-hax (since 3.0.0)
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The @option{-enable-hax} option has been replaced by @option{-accel hax}.
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Both options have been introduced in QEMU version 2.9.0.
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@subsection -drive file=json:@{...@{'driver':'file'@}@} (since 3.0)
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The 'file' driver for drives is no longer appropriate for character or host
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devices and will only accept regular files (S_IFREG). The correct driver
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for these file types is 'host_cdrom' or 'host_device' as appropriate.
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@section QEMU Machine Protocol (QMP) commands
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@subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)
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"autoload" parameter is now ignored. All bitmaps are automatically loaded
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from qcow2 images.
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@subsection query-cpus (since 2.12.0)
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The ``query-cpus'' command is replaced by the ``query-cpus-fast'' command.
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@subsection query-cpus-fast "arch" output member (since 3.0.0)
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The ``arch'' output member of the ``query-cpus-fast'' command is
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replaced by the ``target'' output member.
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@section System emulator devices
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@subsection ivshmem (since 2.6.0)
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The ``ivshmem'' device type is replaced by either the ``ivshmem-plain''
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or ``ivshmem-doorbell`` device types.
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@subsection Page size support < 4k for embedded PowerPC CPUs (since 2.12.0)
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qemu-system-ppcemb will be removed. qemu-system-ppc (or qemu-system-ppc64)
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should be used instead. That means that embedded 4xx PowerPC CPUs will not
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support page sizes < 4096 any longer.
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@section System emulator machines
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@subsection pc-0.10 and pc-0.11 (since 3.0)
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These machine types are very old and likely can not be used for live migration
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from old QEMU versions anymore. A newer machine type should be used instead.
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@subsection prep (PowerPC) (since 3.1)
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This machine type uses an unmaintained firmware, broken in lots of ways,
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and unable to start post-2004 operating systems. 40p machine type should be
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used instead.
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@section Device options
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@subsection Block device options
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@subsubsection "backing": "" (since 2.12.0)
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In order to prevent QEMU from automatically opening an image's backing
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chain, use ``"backing": null'' instead.
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@subsection vio-spapr-device device options
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@subsubsection "irq": "" (since 3.0.0)
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The ``irq'' property is obsoleted.
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