docs/about/removed-features: Move some CLI options to the right location

Some of the removed CLI options have been added to the wrong section
in the "Removed features" chapter - they've been put into the
"Related binaries" section instead. Move them now into the correct
"System emulator command line arguments" section.

Message-Id: <20210818112908.102205-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

docs/about/removed-features.rst

@@ -146,12 +146,73 @@ Replaced by ``-rtc base=date``.
 The "tls-creds" option should be used instead to point to a "tls-creds-x509"
 object created using "-object".
 
+``-mem-path`` fallback to RAM (removed in 5.0)
+''''''''''''''''''''''''''''''''''''''''''''''
+
+If guest RAM allocation from file pointed by ``mem-path`` failed,
+QEMU was falling back to allocating from RAM, which might have resulted
+in unpredictable behavior since the backing file specified by the user
+as ignored. Currently, users are responsible for making sure the backing storage
+specified with ``-mem-path`` can actually provide the guest RAM configured with
+``-m`` and QEMU fails to start up if RAM allocation is unsuccessful.
+
 ``-net ...,name=...`` (removed in 5.1)
 ''''''''''''''''''''''''''''''''''''''
 
 The ``name`` parameter of the ``-net`` option was a synonym
 for the ``id`` parameter, which should now be used instead.
 
+``-numa node,mem=...`` (removed in 5.1)
+'''''''''''''''''''''''''''''''''''''''
+
+The parameter ``mem`` of ``-numa node`` was used to assign a part of guest RAM
+to a NUMA node. But when using it, it's impossible to manage a specified RAM
+chunk on the host side (like bind it to a host node, setting bind policy, ...),
+so the guest ends up 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 ``memdev``, which does the same as ``mem`` and adds
+means to actually manage node RAM on the host side. Use parameter ``memdev``
+with *memory-backend-ram* backend as replacement for parameter ``mem``
+to achieve the same fake NUMA effect or a properly configured
+*memory-backend-file* backend to actually benefit from NUMA configuration.
+New machine versions (since 5.1) will not accept the option but it will still
+work with old machine types. User can check the QAPI schema to see if the legacy
+option is supported by looking at MachineInfo::numa-mem-supported property.
+
+``-numa`` node (without memory specified) (removed in 5.2)
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+Splitting RAM by default between NUMA nodes had the same issues as ``mem``
+parameter with the difference that the role of the user plays QEMU using
+implicit generic or board specific splitting rule.
+Use ``memdev`` with *memory-backend-ram* backend or ``mem`` (if
+it's supported by used machine type) to define mapping explicitly instead.
+Users of existing VMs, wishing to preserve the same RAM distribution, should
+configure it explicitly using ``-numa node,memdev`` options. Current RAM
+distribution can be retrieved using HMP command ``info numa`` and if separate
+memory devices (pc|nv-dimm) are present use ``info memory-device`` and subtract
+device memory from output of ``info numa``.
+
+``-smp`` (invalid topologies) (removed in 5.2)
+''''''''''''''''''''''''''''''''''''''''''''''
+
+CPU topology properties should describe whole machine topology including
+possible CPUs.
+
+However, historically it was possible to start QEMU with an incorrect topology
+where *n* <= *sockets* * *cores* * *threads* < *maxcpus*,
+which could lead to an incorrect topology enumeration by the guest.
+Support for invalid topologies is removed, the user must ensure
+topologies described with -smp include all possible cpus, i.e.
+*sockets* * *cores* * *threads* = *maxcpus*.
+
+``-machine enforce-config-section=on|off`` (removed in 5.2)
+'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+The ``enforce-config-section`` property was replaced by the
+``-global migration.send-configuration={on|off}`` option.
+
 ``-no-kvm`` (removed in 5.2)
 ''''''''''''''''''''''''''''
 
@@ -590,69 +651,6 @@ enforce that any failure to open the backing image (including if the
 backing file is missing or an incorrect format was specified) is an
 error when ``-u`` is not used.
 
-Command line options
---------------------
-
-``-smp`` (invalid topologies) (removed in 5.2)
-''''''''''''''''''''''''''''''''''''''''''''''
-
-CPU topology properties should describe whole machine topology including
-possible CPUs.
-
-However, historically it was possible to start QEMU with an incorrect topology
-where *n* <= *sockets* * *cores* * *threads* < *maxcpus*,
-which could lead to an incorrect topology enumeration by the guest.
-Support for invalid topologies is removed, the user must ensure
-topologies described with -smp include all possible cpus, i.e.
-*sockets* * *cores* * *threads* = *maxcpus*.
-
-``-numa`` node (without memory specified) (removed in 5.2)
-''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-Splitting RAM by default between NUMA nodes had the same issues as ``mem``
-parameter with the difference that the role of the user plays QEMU using
-implicit generic or board specific splitting rule.
-Use ``memdev`` with *memory-backend-ram* backend or ``mem`` (if
-it's supported by used machine type) to define mapping explicitly instead.
-Users of existing VMs, wishing to preserve the same RAM distribution, should
-configure it explicitly using ``-numa node,memdev`` options. Current RAM
-distribution can be retrieved using HMP command ``info numa`` and if separate
-memory devices (pc|nv-dimm) are present use ``info memory-device`` and subtract
-device memory from output of ``info numa``.
-
-``-numa node,mem=``\ *size* (removed in 5.1)
-''''''''''''''''''''''''''''''''''''''''''''
-
-The parameter ``mem`` of ``-numa node`` was used to assign a part of
-guest RAM to a NUMA node. But when using it, it's impossible to manage a specified
-RAM chunk on the host side (like bind it to a host node, setting bind policy, ...),
-so the guest ends up 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 ``memdev``, which does the same as ``mem`` and adds
-means to actually manage node RAM on the host side. Use parameter ``memdev``
-with *memory-backend-ram* backend as replacement for parameter ``mem``
-to achieve the same fake NUMA effect or a properly configured
-*memory-backend-file* backend to actually benefit from NUMA configuration.
-New machine versions (since 5.1) will not accept the option but it will still
-work with old machine types. User can check the QAPI schema to see if the legacy
-option is supported by looking at MachineInfo::numa-mem-supported property.
-
-``-mem-path`` fallback to RAM (removed in 5.0)
-''''''''''''''''''''''''''''''''''''''''''''''
-
-If guest RAM allocation from file pointed by ``mem-path`` failed,
-QEMU was falling back to allocating from RAM, which might have resulted
-in unpredictable behavior since the backing file specified by the user
-as ignored. Currently, users are responsible for making sure the backing storage
-specified with ``-mem-path`` can actually provide the guest RAM configured with
-``-m`` and QEMU fails to start up if RAM allocation is unsuccessful.
-
-``-machine enforce-config-section=on|off`` (removed in 5.2)
-'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-The ``enforce-config-section`` property was replaced by the
-``-global migration.send-configuration={on|off}`` option.
-
 qemu-img amend to adjust backing file (removed in 6.1)
 ''''''''''''''''''''''''''''''''''''''''''''''''''''''