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

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Message-ID: <m1sla7i68s.fsf@ebiederm.dsl.xmission.com>
Date:	Tue, 08 May 2007 11:18:27 -0600
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	yhlu <yhlu.kernel@...il.com>
Cc:	vgoyal@...ibm.com, "H. Peter Anvin" <hpa@...or.com>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Gerd Hoffmann" <kraxel@...hat.com>,
	"Jeff Garzik" <jeff@...zik.org>, patches@...-64.org,
	linux-kernel@...r.kernel.org,
	virtualization <virtualization@...ts.linux-foundation.org>
Subject: Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage

yhlu <yhlu.kernel@...il.com> writes:

> Eric,
>
> With the latest change that make vmlinux to be elf64 and make bzImage
> do switch to 64bit long mode, the kernel started via kexec can not get
> VGA console. but the serial console works well. I wonder if the
> setup.S is skipped in bzImage via kexec path.

Yes.  setup.S has always been skipped by bzImage via the kexec path
unless you explicitly tell /sbin/kexec to use the 16bit entry point.

Is not having a VGA console a new thing, or it something you just noticed?

Eric
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