Re: [PATCH 0/3] sys_membarrier (x86, generic)

From: Rusty Russell
Date: Mon Oct 05 2015 - 22:00:13 EST


Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> writes:
> Hi Andrew,
>
> Here is a repost of sys_membarrier, rebased on top of Linus commit
> c4b5fd3fb2058b650447372472ad24e2a989f9f6 without any change since the
> last v19 post other that proceeding to further testing. When merging
> with other system calls, system call number conflicts should be quite
> straightforward to handle, there is nothing special there.

Hi Mathieu,

Great to see this go in! One small note: it talks about
threads, but membarrier as currently implemented would cover any shared
memory. If you plan to optimize in future, that might not be the case:
we'd want an address argument for those cases?

Cheers,
Rusty.
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