linux-kernel - Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage

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Date:	Tue, 8 May 2007 22:48:56 -0700
From:	yhlu <yhlu.kernel@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>, vgoyal@...ibm.com,
	"Gerd Hoffmann" <kraxel@...hat.com>,
	"Jeff Garzik" <jeff@...zik.org>, patches@...-64.org,
	linux-kernel@...r.kernel.org,
	virtualization <virtualization@...ts.linux-foundation.org>,
	"Rusty Russell" <rusty@...tcorp.com.au>, "Andi Kleen" <ak@...e.de>,
	"Ingo Molnar" <mingo@...e.hu>
Subject: Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage

On 5/8/07, H. Peter Anvin <hpa@...or.com> wrote:
> H. Peter Anvin wrote:
> Of course, one could argue that since all of those were obsolete by the
> time Linux was first created, that it probably doesn't matter and that
> isVGA == 0 pretty much means the more obvious thing.
>
> MDA/HGC stuck around for quite a while for debugging, since it was
> non-conflicting with VGA, but even if it is, the reason people put it in
> their system is to have something that the OS doesn't readily see.
>
so the kexec tools need to scan the pci devices list, and find out how
to set real_mode.isVGA and orig_video_mode, also need to parse the
comand line about vga console.

YH
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