linux-kernel - Re: [PATCH v2 03/13] x86: Add macro for 64bit entry startup

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: <CAE9FiQUjZG_UakYdpxEf8_EHQ4UBo6GK1E_g4wDY576MFcVL4Q@mail.gmail.com>
Date:	Tue, 20 Nov 2012 12:55:41 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org, Matt Fleming <matt.fleming@...el.com>
Subject: Re: [PATCH v2 03/13] x86: Add macro for 64bit entry startup_64

On Tue, Nov 20, 2012 at 12:44 PM, H. Peter Anvin <hpa@...or.com> wrote:
> I don't see any point in three flags here.  Let's stick to one flag; then it fits in the existing boot_flags field.

the magic AA55

boot/header.S:boot_flag:        .word 0xAA55

if change that to other value, would it break existing boot loader?
aka old boot loader could boot the new bzImage anymore.

Thanks

Yinghai
--
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/