linux-kernel - Re: [PATCH 3/3] PCI: allocate bus resources from the top down

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Message-ID: <4C9277CF.6070209@zytor.com>
Date:	Thu, 16 Sep 2010 13:02:23 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Bjorn Helgaas <bjorn.helgaas@...com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Brian Bloniarz <phunge0@...mail.com>,
	Charles Butterfield <charles.butterfield@...tcentury.com>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Stefan Becker <chemobejk@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 3/3] PCI: allocate bus resources from the top down

On 09/16/2010 12:33 PM, Yinghai Lu wrote:
> 
> Those Dell machine BIOS set wrong value in the pci bridge. and it is partial
> overlapped with reserved range in e820.
> 
> Kernel current will honor that HW setting from pci bridge reading at first.
> 
> so the best way should be: using e820 reserved range to trim reading from pci or acpi in some cases.
> 

Yes, that's the only sane option.

	-hpa
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