linux-kernel - Re: [PATCH] THE LINUX/I386 BOOT PROTOCOL

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Message-ID: <9e0cf0bf0608281224r28a6af47tc689757488e93c5a@mail.gmail.com>
Date:	Mon, 28 Aug 2006 22:24:51 +0300
From:	"Alon Bar-Lev" <alon.barlev@...il.com>
To:	"Matt Domsch" <Matt_Domsch@...l.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, "Andi Kleen" <ak@...e.de>,
	"Andrew Morton" <akpm@...l.org>, linux-kernel@...r.kernel.org,
	johninsd@....rr.com
Subject: Re: [PATCH] THE LINUX/I386 BOOT PROTOCOL - Breaking the 256 limit (ping)

On 8/28/06, Matt Domsch <Matt_Domsch@...l.com> wrote:
> No reason.  I was just trying to be careful, not leaving data in the
> upper bits of those registers going uninitialized.  If we know they're
> not being used ever, then it's not a problem.  But I don't think
> that's the source of the command line size concern, is it?

Since the cmd_line_ptr is 32bit, we can load the lower 16bits into si,
ignoring the upper 16bits, or we can use esi for all references.
I think using esi for all references is cleaner...

Best Regards,
Alon Bar-Lev.
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