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Re: 2.3 Pagedir allocation/free and update races

To: Kanoj Sarcar <kanoj@google.engr.sgi.com>
Subject: Re: 2.3 Pagedir allocation/free and update races
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 14 Dec 1999 11:13:51 +0100
Cc: linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
In-Reply-To: <199912140946.BAA07601@google.engr.sgi.com>; from Kanoj Sarcar on Tue, Dec 14, 1999 at 01:46:00AM -0800
Mail-Followup-To: Kanoj Sarcar <kanoj@google.engr.sgi.com>,linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
References: <199912140946.BAA07601@google.engr.sgi.com>
Sender: owner-linux-mm@kvack.org

On Tue, Dec 14, 1999 at 01:46:00AM -0800, Kanoj Sarcar wrote:
> This note describes races in the procedures that allocate and free
> user level page directories. Platform code maintainers, please
> read.

pgd_alloc/free are never invoked from interrupts and the kernel code is not
preemptive, so per-CPU caches are safe, aren't they?

Cheers,
    Jakub
___________________________________________________________________
Jakub Jelinek | jakub@redhat.com | http://sunsite.mff.cuni.cz/~jj
Linux version 2.3.26 on a sparc64 machine (1343.49 BogoMips)
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Follow-Ups:
- Re: 2.3 Pagedir allocation/free and update races
  - From: kanoj@google.engr.sgi.com (Kanoj Sarcar)

References:
- 2.3 Pagedir allocation/free and update races
  - From: kanoj@google.engr.sgi.com (Kanoj Sarcar)
- 2.3 Pagedir allocation/free and update races
  - From: kanoj@google.engr.sgi.com (Kanoj Sarcar)

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