Re: [PATCH 16/23] sched: Use lightweight hazard pointers to grab lazy mms

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> On Jan 8, 2022, at 8:44 AM, Andy Lutomirski <luto@xxxxxxxxxx> wrote:
> 
> The purpose of mmgrab() and mmdrop() is to make "lazy tlb" mode safe.

Just wondering: In a world of ASID/PCID - does the “lazy TLB” really
have a worthy advantage?

Considering the fact that with PTI anyhow address spaces are switched
all the time, can’t we just get rid of it?





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