linux-kernel - Re: [RFC PATCH 1/3] Replace paravirt_probe with "platform type" boot header field

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Message-ID: <m1tzussm4z.fsf@ebiederm.dsl.xmission.com>
Date:	Fri, 04 May 2007 08:23:40 -0600
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Andi Kleen <ak@...e.de>, Chris Wright <chrisw@...s-sol.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Zachary Amsden <zach@...are.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 1/3] Replace paravirt_probe with "platform type" boot header field

Rusty Russell <rusty@...tcorp.com.au> writes:

> On Fri, 2007-05-04 at 08:01 -0600, Eric W. Biederman wrote:
>> We should place that initial branch right after startup_32,
>> we don't need the startup_paravirt at all now.
>> 
>> ENTRY(startup_32)
>> #ifdef CONFIG_LGUEST_GUEST
>>         cmpl	$1, 0x23c(%esi)
>> 	je      lguest_init
>> #endif
>
> Hi Eric!
>
> 	Makes sense to me, but I wasn't sure... do we need to check for old
> bootloader versions and such?

Unlikely.  Unless we expect that this offset will come in non-zero.

Eric
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