fpu: replace LIT64 usage with UINT64_C for specialize constants

[qemu.git] / qemu-deprecated.texi

diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
index 674cc3fdf89173e43c056c1cc13dd9a19325cb04..f7680c08e10a0b0377fc60b21cd723fb8689dce9 100644 (file)
--- a/qemu-deprecated.texi
+++ b/qemu-deprecated.texi
@@ -37,21 +37,6 @@ would automatically enable USB support on the machine type.
 If using the new syntax, USB support must be explicitly
 enabled via the ``-machine usb=on'' argument.
 
 If using the new syntax, USB support must be explicitly
 enabled via the ``-machine usb=on'' argument.
 

-@subsection -virtioconsole (since 3.0.0)
-
-Option @option{-virtioconsole} has been replaced by
-@option{-device virtconsole}.
-
-@subsection -clock (since 3.0.0)
-
-The @code{-clock} option is ignored since QEMU version 1.7.0. There is no
-replacement since it is not needed anymore.
-
-@subsection -enable-hax (since 3.0.0)
-
-The @option{-enable-hax} option has been replaced by @option{-accel hax}.
-Both options have been introduced in QEMU version 2.9.0.
-

 @subsection -drive file=json:@{...@{'driver':'file'@}@} (since 3.0)
 
 The 'file' driver for drives is no longer appropriate for character or host
 @subsection -drive file=json:@{...@{'driver':'file'@}@} (since 3.0)
 
 The 'file' driver for drives is no longer appropriate for character or host


@@ -75,6 +60,87 @@ 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}}.
 
 topologies described with -smp include all possible cpus, i.e.
   @math{@var{sockets} * @var{cores} * @var{threads} = @var{maxcpus}}.
 

+@subsection -vnc acl (since 4.0.0)
+
+The @code{acl} option to the @code{-vnc} argument has been replaced
+by the @code{tls-authz} and @code{sasl-authz} options.
+
+@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.
+
+@subsection -mon ...,control=readline,pretty=on|off (since 4.1)
+
+The @code{pretty=on|off} switch has no effect for HMP monitors, but is
+silently ignored. Using the switch with HMP monitors will become an
+error in the future.
+
+@subsection -realtime (since 4.1)
+
+The @code{-realtime mlock=on|off} argument has been replaced by the
+@code{-overcommit mem-lock=on|off} argument.
+
+@subsection -virtfs_synth (since 4.1)
+
+The ``-virtfs_synth'' argument is now deprecated. Please use ``-fsdev synth''
+and ``-device virtio-9p-...'' instead.
+
+@subsection -numa node,mem=@var{size} (since 4.1)
+
+The parameter @option{mem} of @option{-numa node} is used to assign a part of
+guest RAM to a NUMA node. But when using it, it's impossible to manage specified
+RAM chunk on the host side (like bind it to a host node, setting bind policy, ...),
+so guest end-ups with the fake NUMA configuration with suboptiomal performance.
+However since 2014 there is an alternative way to assign RAM to a NUMA node
+using parameter @option{memdev}, which does the same as @option{mem} and adds
+means to actualy manage node RAM on the host side. Use parameter @option{memdev}
+with @var{memory-backend-ram} backend as an replacement for parameter @option{mem}
+to achieve the same fake NUMA effect or a properly configured
+@var{memory-backend-file} backend to actually benefit from NUMA configuration.
+In future new machine versions will not accept the option but it will still
+work with old machine types. User can check QAPI schema to see if the legacy
+option is supported by looking at MachineInfo::numa-mem-supported property.
+
+@subsection -numa node (without memory specified) (since 4.1)
+
+Splitting RAM by default between NUMA nodes has the same issues as @option{mem}
+parameter described above with the difference that the role of the user plays
+QEMU using implicit generic or board specific splitting rule.
+Use @option{memdev} with @var{memory-backend-ram} backend or @option{mem} (if
+it's supported by used machine type) to define mapping explictly instead.
+
+@subsection -mem-path fallback to RAM (since 4.1)
+Currently if guest RAM allocation from file pointed by @option{mem-path}
+fails, QEMU falls back to allocating from RAM, which might result
+in unpredictable behavior since the backing file specified by the user
+is ignored. In the future, users will be responsible for making sure
+the backing storage specified with @option{-mem-path} can actually provide
+the guest RAM configured with @option{-m} and QEMU will fail to start up if
+RAM allocation is unsuccessful.
+
+@subsection RISC-V -bios (since 4.1)
+
+QEMU 4.1 introduced support for the -bios option in QEMU for RISC-V for the
+RISC-V virt machine and sifive_u machine.
+
+QEMU 4.1 has no changes to the default behaviour to avoid breakages. This
+default will change in a future QEMU release, so please prepare now. All users
+of the virt or sifive_u machine must change their command line usage.
+
+QEMU 4.1 has three options, please migrate to one of these three:
+ 1. ``-bios none`` - This is the current default behavior if no -bios option
+      is included. QEMU will not automatically load any firmware. It is up
+      to the user to load all the images they need.
+ 2. ``-bios default`` - In a future QEMU release this will become the default
+      behaviour if no -bios option is specified. This option will load the
+      default OpenSBI firmware automatically. The firmware is included with
+      the QEMU release and no user interaction is required. All a user needs
+      to do is specify the kernel they want to boot with the -kernel option
+ 3. ``-bios <file>`` - Tells QEMU to load the specified file as the firmwrae.
+

 @section QEMU Machine Protocol (QMP) commands
 
 @subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)
 @section QEMU Machine Protocol (QMP) commands
 
 @subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)


@@ -82,6 +148,12 @@ topologies described with -smp include all possible cpus, i.e.
 "autoload" parameter is now ignored. All bitmaps are automatically loaded
 from qcow2 images.
 
 "autoload" parameter is now ignored. All bitmaps are automatically loaded
 from qcow2 images.
 

+@subsection query-block result field dirty-bitmaps[i].status (since 4.0)
+
+The ``status'' field of the ``BlockDirtyInfo'' structure, returned by
+the query-block command is deprecated. Two new boolean fields,
+``recording'' and ``busy'' effectively replace it.
+

 @subsection query-cpus (since 2.12.0)
 
 The ``query-cpus'' command is replaced by the ``query-cpus-fast'' command.
 @subsection query-cpus (since 2.12.0)
 
 The ``query-cpus'' command is replaced by the ``query-cpus-fast'' command.


@@ -97,6 +169,16 @@ Use ``device_add'' for hotplugging vCPUs instead of ``cpu-add''.  See
 documentation of ``query-hotpluggable-cpus'' for additional
 details.
 
 documentation of ``query-hotpluggable-cpus'' for additional
 details.
 

+@subsection query-events (since 4.0)
+
+The ``query-events'' command has been superseded by the more powerful
+and accurate ``query-qmp-schema'' command.
+
+@subsection chardev client socket with 'wait' option (since 4.0)
+
+Character devices creating sockets in client mode should not specify
+the 'wait' field, which is only applicable to sockets in server mode
+

 @section Human Monitor Protocol (HMP) commands
 
 @subsection The hub_id parameter of 'hostfwd_add' / 'hostfwd_remove' (since 3.1)
 @section Human Monitor Protocol (HMP) commands
 
 @subsection The hub_id parameter of 'hostfwd_add' / 'hostfwd_remove' (since 3.1)


@@ -109,6 +191,35 @@ The @option{[hub_id name]} parameter tuple of the 'hostfwd_add' and
 Use ``device_add'' for hotplugging vCPUs instead of ``cpu-add''.  See
 documentation of ``query-hotpluggable-cpus'' for additional details.
 
 Use ``device_add'' for hotplugging vCPUs instead of ``cpu-add''.  See
 documentation of ``query-hotpluggable-cpus'' for additional details.
 

+@subsection acl_show, acl_reset, acl_policy, acl_add, acl_remove (since 4.0.0)
+
+The ``acl_show'', ``acl_reset'', ``acl_policy'', ``acl_add'', and
+``acl_remove'' commands are deprecated with no replacement. Authorization
+for VNC should be performed using the pluggable QAuthZ objects.
+
+@section Guest Emulator ISAs
+
+@subsection RISC-V ISA privledge specification version 1.09.1 (since 4.1)
+
+The RISC-V ISA privledge specification version 1.09.1 has been deprecated.
+QEMU supports both the newer version 1.10.0 and the ratified version 1.11.0, these
+should be used instead of the 1.09.1 version.
+
+@section System emulator CPUS
+
+@subsection RISC-V ISA CPUs (since 4.1)
+
+The RISC-V cpus with the ISA version in the CPU name have been depcreated. The
+four CPUs are: ``rv32gcsu-v1.9.1``, ``rv32gcsu-v1.10.0``, ``rv64gcsu-v1.9.1`` and
+``rv64gcsu-v1.10.0``. Instead the version can be specified via the CPU ``priv_spec``
+option when using the ``rv32`` or ``rv64`` CPUs.
+
+@subsection RISC-V ISA CPUs (since 4.1)
+
+The RISC-V no MMU cpus have been depcreated. The two CPUs: ``rv32imacu-nommu`` and
+``rv64imacu-nommu`` should no longer be used. Instead the MMU status can be specified
+via the CPU ``mmu`` option when using the ``rv32`` or ``rv64`` CPUs.
+

 @section System emulator devices
 
 @subsection bluetooth (since 3.1)
 @section System emulator devices
 
 @subsection bluetooth (since 3.1)


@@ -131,6 +242,12 @@ This machine type uses an unmaintained firmware, broken in lots of ways,
 and unable to start post-2004 operating systems. 40p machine type should be
 used instead.
 
 and unable to start post-2004 operating systems. 40p machine type should be
 used instead.
 

+@subsection spike_v1.9.1 and spike_v1.10 (since 4.1)
+
+The version specific Spike machines have been deprecated in favour of the
+generic ``spike`` machine. If you need to specify an older version of the RISC-V
+spec you can use the ``-cpu rv64gcsu,priv_spec=v1.9.1`` command line argument.
+

 @section Device options
 
 @subsection Block device options
 @section Device options
 
 @subsection Block device options


@@ -187,3 +304,37 @@ Note that if you are exposing the export via /dev/nbd0, it is easier
 to just export the entire image and then mount only /dev/nbd0p1 than
 it is to reinvoke @command{qemu-nbd -c /dev/nbd0} limited to just a
 subset of the image.
 to just export the entire image and then mount only /dev/nbd0p1 than
 it is to reinvoke @command{qemu-nbd -c /dev/nbd0} limited to just a
 subset of the image.

+
+@subsection qemu-img convert -n -o (since 4.2.0)
+
+All options specified in @option{-o} are image creation options, so
+they have no effect when used with @option{-n} to skip image creation.
+Silently ignored options can be confusing, so this combination of
+options will be made an error in future versions.
+
+@section Build system
+
+@subsection Python 2 support (since 4.1.0)
+
+In the future, QEMU will require Python 3 to be available at
+build time.  Support for Python 2 in scripts shipped with QEMU
+is deprecated.
+
+@section Backwards compatibility
+
+@subsection Runnability guarantee of CPU models (since 4.1.0)
+
+Previous versions of QEMU never changed existing CPU models in
+ways that introduced additional host software or hardware
+requirements to the VM.  This allowed management software to
+safely change the machine type of an existing VM without
+introducing new requirements ("runnability guarantee").  This
+prevented CPU models from being updated to include CPU
+vulnerability mitigations, leaving guests vulnerable in the
+default configuration.
+
+The CPU model runnability guarantee won't apply anymore to
+existing CPU models.  Management software that needs runnability
+guarantees must resolve the CPU model aliases using te
+``alias-of'' field returned by the ``query-cpu-definitions'' QMP
+command.