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docs: Document memory allocation and emulator pinning limitation

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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
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Michal Privoznik 2023-03-08 11:53:37 +01:00
parent df2ef2e706
commit c4b176567b
1 changed files with 3 additions and 1 deletions
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docs/formatdomain.rst
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@ -1117,7 +1117,9 @@ influence how virtual memory pages are backed by host pages.
Using the optional ``mode`` attribute, specify when to allocate the memory by Using the optional ``mode`` attribute, specify when to allocate the memory by
supplying either "immediate" or "ondemand". :since:`Since 8.2.0` it is supplying either "immediate" or "ondemand". :since:`Since 8.2.0` it is
possible to set the number of threads that hypervisor uses to allocate possible to set the number of threads that hypervisor uses to allocate
memory via ``threads`` attribute. memory via ``threads`` attribute. To speed allocation process up, when
pinning emulator thread it's recommended to include CPUs from desired NUMA
nodes so that allocation threads can have their affinity set.
``discard`` ``discard``
When set and supported by hypervisor the memory content is discarded just When set and supported by hypervisor the memory content is discarded just
before guest shuts down (or when DIMM module is unplugged). Please note that before guest shuts down (or when DIMM module is unplugged). Please note that