linux-kernel - Re: [PATCH] do not free non slab allocated per_cpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 22 Sep 2006 12:06:33 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Andrew Morton <akpm@...l.org>
cc:	David Rientjes <rientjes@...washington.edu>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	kmannth@...ibm.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] do not free non slab allocated per_cpu_pageset

On Fri, 22 Sep 2006, Andrew Morton wrote:

> > 
> > > I think I preferred my earlier fix, recently reworked as:
> > 
> > The problem is though that the pcp pointers must point to the static pcp 
> > arrays for bootup to succeed under NUMA. Your patch may work under SMP. 
> > For NUMA you may zap pointers to valid static pcps.
> 
> This is unclear to me.  Do you mean "the pcps must be usable during
> process_zones()'s call to kmalloc_node())" or do you mean "the pcps must
> always be usable" (in which case more work needs to be done) or what?

The pcps must be usable during process_zones() for NUMA bootstrap. 
As far as I recall: A cpu is booted with the static arrays and later 
process_zones is replacing the references to the static arrays.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/