linux-kernel - RE: [PATCH 2.6.34] ehci-hcd: add option to enable 64-bit DMA support

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Message-ID: <SNT125-W457447CBE941D2703E98D0C3420@phx.gbl>
Date:	Mon, 22 Feb 2010 22:48:37 -0800
From:	Yuhong Bao <yuhongbao_386@...mail.com>
To:	<hancockrwd@...il.com>, <david-b@...bell.net>
CC:	<greg@...ah.com>, <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>
Subject: RE: [PATCH 2.6.34] ehci-hcd: add option to enable 64-bit DMA support


> According to one Microsoft page I saw, Windows XP did not implement
> the 64-bit addressing feature in EHCI. I haven't found any information
> on whether any newer Windows versions do or not.
Windows 7 seems to support it, and it seems like they have to already do a workaround for broken NVIDIA chipsets:
http://support.microsoft.com/?kbid=976972
http://www.windows7tipsonline.com/USB_Problem.htm
http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/3aae3b66-6a1a-47e8-ad1b-b20b68eaecf8#79ea3219-d76e-40bc-b910-c7d347002e66
http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/38f25c1d-de67-4c74-8845-2cd3a15d8e41

Yuhong Bao
 		 	   		  
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