Re: [RFD] posix-timers: CRIU woes

Thomas Gleixner
2023-05-11T09:36:52Z

On Thu, May 11 2023 at 11:17, Pavel Tikhomirov wrote:
> On 10.05.2023 16:16, Andrey Vagin wrote:
>>>
>>> So because of that half thought out user space ABI we are now up the
>>> regression creek without a paddle, unless CRIU can accomodate to a
>>> different restore mechanism to lift this restriction from the kernel.
>>>
>> If you give us a new API to create timers with specified id-s, we will
>> figure out how to live with it. It isn't good to ask users to update
>> CRIU to work on new kernels, but here are reasons and event improvements
>> for CRIU, so I think it's worth it.
>
> I agree, any API to create timers with specified id-s would work for new
> CRIU versions.

The real question is whether this will cause any upheaval when a new
kernel meets a non-updated CRIU stack.

You know the UABI regression rules of the kernel...

Thanks,

tglx