linux-kernel - Re: [PATCH] x86: do not expose CONFIG

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]

Message-ID: <4980EEA0.4050802@zytor.com>
Date:	Wed, 28 Jan 2009 15:47:44 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Harvey Harrison <harvey.harrison@...il.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Jaswinder Singh Rajput <jaswinder@...nel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sam Ravnborg <sam@...nborg.org>,
	Jaswinder Singh Rajput <jaswinderrajput@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] x86: do not expose CONFIG_BSWAP to userspace

Harvey Harrison wrote:
> On Wed, 2009-01-28 at 15:27 -0800, H. Peter Anvin wrote:
>> Harvey Harrison wrote:
>>> Well, that's unfortunate, how about we just export the BSWAP version
>>> unconditionally and hope pure i386 just goes away someday?
>>>
>> Well, we already have MOVBE coming up, too...
>>
> 
> Is someone already working on an __arch_swab{16|32|64}p to use them?
> 

Not that I know of, but it's trivial enough.  They can also be used for 
all-register swapping, too, with the advantage that you get register 
decoupling.

	-hpa
--
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/