Re: [patch 00/11] rseq: Optimize exit to user space

[Thomas Gleixner]

On Wed, Aug 13 2025 at 11:45, Jens Axboe wrote:
> On 8/13/25 10:29 AM, Thomas Gleixner wrote:
>> 
>> suffered badly from the stale eventmask bits and the cleaned up version
>> brought a whopping 25+% performance gain.
>
> Thanks for doing this work, it's been on my list to take a look at rseq
> as it's quite the pig currently and enabled by default (with what I
> assume is from a newer libc).

Yes, recent glibc uses it.

Could you give it a test ride to see whether this makes a difference in
your environment?

Thanks

        tglx