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smp: drop support for deprecated (invalid topologies) 

it's was deprecated since 3.1

Support for invalid topologies is removed, the user must ensure
that topologies described with -smp include all possible cpus,
i.e. (sockets * cores * threads) == maxcpus or QEMU will
exit with error.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by:
Message-Id: <20200911133202.938754-1-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Igor Mammedov 2020-09-11 09:32:02 -04:00 committed by Paolo Bonzini
parent 2c24305306
commit b057f0961b
1 changed files with 13 additions and 0 deletions
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13
docs/system/deprecated.rst
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@ -646,6 +646,19 @@ as ignored. Currently, users are responsible for making sure the backing storage
specified with ``-mem-path`` can actually provide the guest RAM configured with specified with ``-mem-path`` can actually provide the guest RAM configured with
``-m`` and QEMU fails to start up if RAM allocation is unsuccessful. ``-m`` and QEMU fails to start up if RAM allocation is unsuccessful.
``-smp`` (invalid topologies) (removed 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*.
Block devices Block devices
------------- -------------