linux-kernel - Re: [PATCH] xen: relax signature check

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Message-ID: <475EC5E5.80104@goop.org>
Date:	Tue, 11 Dec 2007 09:16:21 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	7eggert@....de
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Xen-devel <xen-devel@...ts.xensource.com>
Subject: Re: [PATCH] xen: relax signature check

Bodo Eggert wrote:
> Not BUG_ON(memcmp(xen_start_info->magic, "xen-3.", 6) != 0); ?
> I don't thin Xen version 32 will be compatible ...
>   

It had better be; if it loads the kernel, it should present a xen-3
compatible ABI.

But this is just a sanity check to make sure things are basically OK;
BUG_ON is hardly nice error reporting (not that there's much else we can
do at that point).

    J
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