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: <4672BC3E.6080308@zytor.com>
Date:	Fri, 15 Jun 2007 09:20:14 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Vivek Goyal <vgoyal@...ibm.com>,
	Rusty Russell <rusty@...tcorp.com.au>, Andi Kleen <ak@...e.de>,
	v12n <virtualization@...ts.linux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Xen-Devel <xen-devel@...ts.xensource.com>
Subject: Re: [PATCH 04/10] i386: clean up bzImage generation

Jeremy Fitzhardinge wrote:
> -setup_move_size: .word  0x8000		# size to move, when setup is not
> +setup_move_size: .word  _setup_size	# size to move, when setup is not
>  					# loaded at 0x90000. We will move setup
>  					# to 0x90000 then just before jumping
>  					# into the kernel. However, only the

This is WRONG and will break 2.00 protocol bootloaders, if any still
exist, and quite possibly some 2.01 protocol bootloaders.  There are
definitiely bootloaders in the field that rely on this implicit value.

> @@ -246,7 +246,6 @@ setup2:
>  	jnz	1f
>  	movw	$0xfffc, %sp	# Make sure we're not zero
>  1:	movzwl	%sp, %esp	# Clear upper half of %esp
> -	sti

Motivation, please?

	-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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ