linux-kernel - Re: x86: 4kstacks default

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20080421142948.GV9554@elte.hu>
Date:	Mon, 21 Apr 2008 16:29:48 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Arjan van de Ven <arjan@...radead.org>, andi@...stfloor.org,
	joern@...fs.org, w@....eu, lkml@....ca, bunk@...nel.org,
	alan@...rguk.ukuu.org.uk, shawn.bohrer@...il.com,
	linux-kernel@...r.kernel.org, tglx@...utronix.de
Subject: Re: x86: 4kstacks default


* Andrew Morton <akpm@...ux-foundation.org> wrote:

> > On Sun, 20 Apr 2008 11:50:53 -0700 Arjan van de Ven <arjan@...radead.org> wrote:
> > On Sun, 20 Apr 2008 20:19:30 +0200
> > Andi Kleen <andi@...stfloor.org> wrote:
> > 
> > > In theory if you e.g. convert a recursive algorithm
> > > to iterative you might save some cache foot print, but I don't
> > > think that really happens in kernel code.
> > > 
> > 
> > this is what Al did for the symlink recursion thing, and Jens did 
> > for the block layer... so yes this conversion does happen for real.
> 
> md got mostly-fixed too, via Neil's patch which sat in -mm for nearly 
> two years.

had we done the de-obfuscate-4K-stacks Kconfig change earlier it might 
have gotten upstream faster.

	Ingo
--
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/