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Re: Critical section

To: Taylor R Campbell <campbell+netbsd-tech-kern%mumble.net@localhost>
Subject: Re: Critical section
From: Masao Uebayashi <uebayasi%gmail.com@localhost>
Date: Fri, 28 Nov 2014 13:42:41 +0900

On Fri, Nov 28, 2014 at 12:40 AM, Masao Uebayashi <uebayasi%gmail.com@localhost> wrote:
> It turned out that prohibiting nesting was too strict, and just plain
> wrong.  CPU can enter critical section C1, interrupted, and enter C2,
> etc.  The cprng_fast.c assertion is OK.  Sorry for confusion.

Still thinking.  Probably providing percpu_checkref() for assertions is better.

References:
- Critical section
  - From: Masao Uebayashi
- Re: Critical section
  - From: Taylor R Campbell
- Re: Critical section
  - From: Masao Uebayashi

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