linux-kernel - Re: [13/18] x86_64: Allow fallback for the stack

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:	Thu, 04 Oct 2007 14:30:09 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andi Kleen <ak@...e.de>
Cc:	Christoph Lameter <clameter@....com>, akpm@...ux-foundation.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org, travis@....com
Subject: Re: [13/18] x86_64: Allow fallback for the stack

On Thu, 2007-10-04 at 14:25 +0200, Andi Kleen wrote:
> > The order-1 allocation failures where GFP_ATOMIC, because SLUB uses !0
> > order for everything.
> 
> slub is wrong then. Can it be fixed?

I think mainline slub doesn't do this, just -mm.

See DEFAULT_MAX_ORDER in mm/slub.c

> > Kernel stack allocation is GFP_KERNEL I presume. 
> 
> Of course.
> 
> > Also, I use 4k stacks on all my machines.
> 
> You don't have any x86-64 machines?

Ah, my bad, yes I do, but I (wrongly) thought they had that option too.

-
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/