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| author | Igor Mammedov <imammedo@redhat.com> | 2020-09-11 04:44:08 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-09-30 19:09:20 +0200 |
| commit | b21aa7e01eb82f94ccdd7afdbe299a242d215272 (patch) | |
| tree | cdca8a14877d475fa33bef167d1e15f350eb5077 /docs/system | |
| parent | 8f814ea1a2769311c71af069210dbba1de3aa9a4 (diff) | |
| download | focaccia-qemu-b21aa7e01eb82f94ccdd7afdbe299a242d215272.tar.gz focaccia-qemu-b21aa7e01eb82f94ccdd7afdbe299a242d215272.zip | |
numa: drop support for '-numa node' (without memory specified)
it was deprecated since 4.1 commit 4bb4a2732e (numa: deprecate implict memory distribution between nodes) 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`. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <20200911084410.788171-2-imammedo@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'docs/system')
| -rw-r--r-- | docs/system/deprecated.rst | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index 5326141cee..827482a8f7 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -92,15 +92,6 @@ error in the future. The ``-realtime mlock=on|off`` argument has been replaced by the ``-overcommit mem-lock=on|off`` argument. -``-numa`` node (without memory specified) (since 4.1) -''''''''''''''''''''''''''''''''''''''''''''''''''''' - -Splitting RAM by default between NUMA nodes has the same issues as ``mem`` -parameter described above 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. - ``-mem-path`` fallback to RAM (since 4.1) ''''''''''''''''''''''''''''''''''''''''' @@ -612,6 +603,20 @@ error when ``-u`` is not used. Command line options -------------------- +``-numa`` node (without memory specified) (removed 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 explictly 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) '''''''''''''''''''''''''''''''''''''''''''' |