linux-kernel - Re: [PATCH 5/6] Begin abstraction of sensitive instructions: asm files

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:	Mon, 24 Jul 2006 13:54:37 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <ak@....de>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	Chuck Ebbert <76306.1226@...puserve.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH 5/6] Begin abstraction of sensitive instructions: asm
 files

Andi Kleen wrote:
> I would rather pass the register to the macro? If you start to
> clobber registers you would need to pass in the tmp registers
> too I guess.
The intent is that these code sequences can be patched in place, so they 
need to have a specific abi at the machine-code level.  Some of the 
operations whose Xen implementation clobbers a register have that in 
their definition, on the assumption that 1 temp is enough, and that 
another interface which needs more can organize save/restoring registers 
for itself.

    J
-
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/