linux-kernel - Re: [PATCH] PCI: Always set prefetchable base/limit upper32 registers

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Message-ID: <4B145EAF.8030909@kernel.org>
Date:	Mon, 30 Nov 2009 16:09:19 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Grant Grundler <grundler@...isc-linux.org>
CC:	Alex Williamson <alex.williamson@...com>, jbarnes@...tuousgeek.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: Always set prefetchable base/limit upper32	registers

Grant Grundler wrote:
> On Mon, Nov 30, 2009 at 03:32:13PM -0800, Yinghai Lu wrote:
>> IORESOURCE_MEM_64 get set when PCI_PREF_RANGE_TYPE_64 is set.
> 
> PCI_PREF_RANGE_TYPE_64 is when we read BARs. It doesn't indicate
> anything about PCI Bridge Window registers AFAIK.
> 

please double check pci-to-pci bridge 1.2, in page 47.

YH


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