[PATCH glibc 1/3] glibc: Perform rseq registration at C startup and thread creation (v20)

Mathieu Desnoyers mathieu.desnoyers@efficios.com
Thu Jun 4 11:10:56 GMT 2020


----- On Jun 3, 2020, at 1:22 PM, Joseph Myers joseph@codesourcery.com wrote:

> On Wed, 3 Jun 2020, Florian Weimer via Libc-alpha wrote:
> 
>> I'm still waiting for feedback from other maintainers whether the level
>> of documentation and testing is appropriate.
> 
> Looking at the documentation in the manual, it doesn't look like it has
> enough information for someone to use this functionality, or to know when
> they might want to use it, and nor does it point to external documentation
> of it.  It would seem appropriate at least to include a link to wherever
> the external documentation is of what this functionality is good for, how
> to create and use a "Restartable Sequence critical section", and how to
> "perform rseq registration to the kernel".

That external piece of documentation would be part of the Linux man-pages
project, maintained by Michael Kerrisk. I have submitted a few revisions
of the rseq(2) man page, but have been waiting for Michael to reply for more
than a year now:

  https://lore.kernel.org/r/2021826204.69809.1588000508294.JavaMail.zimbra@efficios.com

I'm thinking about hosting a rseq(2) man-page into my librseq project, would
that make sense ?

librseq is currently a development branch in my own repository for now. It still
needs to be tweaked to adapt to the various changes that went into the glibc rseq
enablement patchset, and then I plan to move it to a more "formal" home:

  https://github.com/compudj/librseq

Thanks,

Mathieu


-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com


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