linux-kernel - Re: [LinuxBIOS] [linux-usb-devel] [RFC][PATCH 0/2] x86

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Message-ID: <m1zm9y3gd2.fsf@ebiederm.dsl.xmission.com>
Date:	Fri, 08 Dec 2006 02:07:53 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	"Yinghai Lu" <yinghai.lu@....com>
Cc:	"Greg KH" <gregkh@...e.de>,
	"Peter Stuge" <stuge-linuxbios@....org>,
	linux-usb-devel@...ts.sourceforge.net,
	"Stefan Reinauer" <stepan@...esystems.de>,
	linux-kernel@...r.kernel.org, linuxbios@...uxbios.org,
	"Andi Kleen" <ak@...e.de>, "David Brownell" <david-b@...bell.net>
Subject: Re: [LinuxBIOS] [linux-usb-devel] [RFC][PATCH 0/2] x86_64 Early usb debug port support.

"Yinghai Lu" <yinghai.lu@....com> writes:

> On 12/7/06, Eric W. Biederman <ebiederm@...ssion.com> wrote:
>> Ugh.  I'd check the code.  But it looks like my tweak to the
>> early fixmap code.  But my hunch is that my tweak to __fixmap
>> so that it's pud and pmd were prepopulated didn't take on
>> your build.
>
> I missed some options?

Your or I missed a bug fix/enhancement in there somewhere.

Basically my very early setup of the fixmap failed.
Now.  I thought I had that covered by preallocated the pud and the pmd
entries.   So the only thing missing was the pte entries.

If that is not a big enough hint I will look into it in a bit...

I'm starting to become a big fan of constant initializers.  So our
core subsystems don't need initialization code to be useful.  All of
these early things are just a pain.

Eric
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