Hello Andreas,

a) an affected user with the fixed qemu package will see the chance of
hitting max_map_count dramatically reduced thanks to the new
implementation of the coroutine cache pools.

To be clear, only this fix is enough to reduce significantly the risk of
hitting EXISTING  max_map_count system limit.

Of course, increasing the limit is even better to reduce the risk of
qemu to overflow it (for the scenerio where there are a LOT of threads),
but this is independent from this fix.

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https://bugs.launchpad.net/bugs/2168803

Title:
  QEMU 8.2.2 guests crash by exhausting vm.max_map_count with coroutines

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