linux-kernel - Re: [PATCH v6 19/27] x86, boot: update comments about entries for 64bit image

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Message-ID: <CAE9FiQXp8kiHus3s-TYtAKzzZHqgfmsv-PpHDqgd56b1Re3B-g@mail.gmail.com>
Date:	Thu, 13 Dec 2012 17:00:13 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 19/27] x86, boot: update comments about entries for
 64bit image

On Thu, Dec 13, 2012 at 4:54 PM, H. Peter Anvin <hpa@...or.com> wrote:
> On 12/13/2012 04:51 PM, Yinghai Lu wrote:

>> also need to make sure zero page and command line get ident mapping.
>> because arch/x86/boot/compressed/head_64.S is using them.
>>
>
> ... or we need to do the same kind of thing there.
>
your #PF handler approach will  handle accessing kernel code together
with zero_page, command_line, ramdisk ?
so only need to map first 2M?
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