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SubjectRe: [PATCH for 4.16 08/10] membarrier: x86: Provide core serializing command (v3)
----- On Jan 16, 2018, at 1:29 PM, Thomas Gleixner wrote:

> On Mon, 15 Jan 2018, Mathieu Desnoyers wrote:
>> There are two places where core serialization is needed by membarrier:
>> 1) When returning from the membarrier IPI,
>> 2) After scheduler updates curr to a thread with a different mm, before
>> going back to user-space, since the curr->mm is used by membarrier to
>> check whether it needs to send an IPI to that CPU.
> This wants to be split into x86 and core changes. Ideally you make the core
> changes before the previous patch and add the empty inline into
> linux/processor.h....

Good point, done. The first commit introducing the new command now also
introduces the generic stuff moved from the x86 patches.



> Thanks,
> tglx

Mathieu Desnoyers
EfficiOS Inc.

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