linux-kernel - Re: [PATCH 12/12] i386 boot: Add an ELF header to bzImage

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: <4526D084.1030700@zytor.com>
Date:	Fri, 06 Oct 2006 14:54:12 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	vgoyal@...ibm.com, Andrew Morton <akpm@...l.org>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Reloc Kernel List <fastboot@...ts.osdl.org>, ak@...e.de,
	horms@...ge.net.au, lace@...kratochvil.net, magnus.damm@...il.com,
	lwang@...hat.com, dzickus@...hat.com, maneesh@...ibm.com
Subject: Re: [PATCH 12/12] i386 boot: Add an ELF header to bzImage

Eric W. Biederman wrote:
> "H. Peter Anvin" <hpa@...or.com> writes:
> 
>> Vivek Goyal wrote:
>>> Hi Eric,
>>> I have added cld in the regenerated patch below.
>> No, the cld needs to be earlier.  It turns out this isn't the first use of
>> string instructions.
> 
> Can we rely on the int calls not setting df?  Otherwise we need to clear
> df at each use as we do with all of the later uses.
> 

Yes, we can, with a few exceptions.  INT saves the flags and IRET 
restores them.

	-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/