linux-kernel - Re: [PATCH 4/6] Implement a general log2 facility in the kernel

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:	Wed, 13 Sep 2006 10:31:36 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	David Howells <dhowells@...hat.com>, torvalds@...l.org,
	akpm@...l.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 4/6] Implement a general log2 facility in the kernel

On Wed, Sep 13, 2006 at 06:17:34PM +0200, Adrian Bunk wrote:
> On Wed, Sep 13, 2006 at 02:03:00PM +0100, David Howells wrote:
> > From: David Howells <dhowells@...hat.com>
> > 
> > This facility provides three entry points:
> > 
> > 	log2()		Log base 2 of u32
> >...
> 
> Considering that several arch maintainers have vetoed my patch to revert 
> the -ffreestanding removal Andi sneaked in with his usual trick to hide 
> generic patches as "x86_64 patch", such a usage of a libc function name 
> with a signature different from the one defined in ISO/IEC 9899:1999 is 
> a namespace violation that mustn't happen.

log2 is only defined if math.h gets included.  If we're including math.h
at any point in the kernel itself (excluding the bootloader and similar),
we're already screwed six ways from sunday.
-
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/