linux-kernel - Re: [PATCH] pci: increase alignment to make more space for hidden code

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Message-ID: <20091012192242.GA2691@elte.hu>
Date:	Mon, 12 Oct 2009 21:22:42 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Bjorn Helgaas <bjorn.helgaas@...com>, Len Brown <lenb@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jesse Barnes <jesse.barnes@...el.com>,
	Ricardo Jorge da Fonseca Marques Ferreira 
	<storm@...49152.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org,
	Yannick Roehlly <yannick.roehlly@...e.fr>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>, x86@...nel.org
Subject: Re: [PATCH] pci: increase alignment to make more space for hidden
	code


* Yinghai Lu <yinghai@...nel.org> wrote:

> > This feels like a hack that accidentally covers up the problem.  I 
> > don't think we understand what's happening well enough.
> 
> yes, we need to figure out why when acpi=on, those BAR are cleared, 
> before pci code try to scan and read BAR. (node early pic print out 
> untouched, but after APCI subsystem is enabled, those BAR got 
> clearred)

I'm wondering, how did it get cleared - some AML script told the kernel 
to clear it?

	Ingo
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