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| author | Igor Mammedov <imammedo@redhat.com> | 2020-09-11 09:32:02 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-09-30 19:11:36 +0200 |
| commit | b057f0961b10a5b052a81047d887a95ce206e00c (patch) | |
| tree | b9008b8a45b0e449bf66275821e8b12a426d4027 /docs/system | |
| parent | 2c243053060f7fd47b71dcb6e3b80346b89c796b (diff) | |
| download | focaccia-qemu-b057f0961b10a5b052a81047d887a95ce206e00c.tar.gz focaccia-qemu-b057f0961b10a5b052a81047d887a95ce206e00c.zip | |
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>
Diffstat (limited to 'docs/system')
| -rw-r--r-- | docs/system/deprecated.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst index 716f6aa315..da862201ba 100644 --- a/docs/system/deprecated.rst +++ b/docs/system/deprecated.rst @@ -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 ``-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 ------------- |