Re: [PATCH net 0/3] Revert openvswitch per-CPU storage

On 10/06/2025 10:06, Sebastian Andrzej Siewior wrote:

On 2025-06-10 10:03:08 [+0300], Gal Pressman wrote:

quoted

On 10/06/2025 9:43, Sebastian Andrzej Siewior wrote:

quoted

On 2025-06-10 09:26:28 [+0300], Gal Pressman wrote:

quoted

This patch series reverts a set of changes that consolidated per-CPU
storage structures in the openvswitch module.

The original changes were intended to improve performance and reduce
complexity by merging three separate per-CPU structures into one, but
they have changed openvswitch to use static percpu allocations, and
exhausted the reserved chunk on module init.
This results in allocation of struct ovs_pcpu_storage (6488 bytes)
failure on ARM.

The reverts are applied in reverse order of the original commits.

Is the limited per-CPU storage the only problem? If so I would towards a
different solution rather than reverting everything.

I don't know if this is the only problem, we can't load the module
starting with these patches.

I suggest continuing with the reverts as I assume your new solution will
be net-next material, no?

It is a regression in -rc1 so I would try to fix this on top of -rc1
instead of reverting everything.

Thanks Sebastian, looking forward to your patches.