linux-kernel - Re: [PATCH v2 1/3] x86, boot: add mmio serial during compressed boot

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Date:	Tue, 16 Jul 2013 12:41:59 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Kees Cook <keescook@...omium.org>
CC:	Yinghai Lu <yinghai@...nel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	linux-serial@...r.kernel.org
Subject: Re: [PATCH v2 1/3] x86, boot: add mmio serial during compressed boot

On 07/16/2013 12:40 PM, Kees Cook wrote:
>>
>> I think setting up a dynamic #PF handler is the right thing for the
>> decompressor, we already did for the kernel proper.
> 
> I'm not sure how to accomplish this yet. I'm still trying to
> understand how the page tables are arranged. :)
> 

Look at the handler at the top of arch/x86/kernel/head64.c.

	-hpa


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