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Date: Sat, 10 Apr 2010 14:49:12 +0200 From: Daniel Mack <daniel@...aq.de> To: Pedro Ribeiro <pedrib@...il.com> Cc: Alan Stern <stern@...land.harvard.edu>, Robert Hancock <hancockrwd@...il.com>, linux-kernel@...r.kernel.org, akpm@...ux-foundation.org, Greg KH <gregkh@...e.de>, alsa-devel@...a-project.org, linux-usb@...r.kernel.org Subject: Re: USB transfer_buffer allocations on 64bit systems On Fri, Apr 09, 2010 at 07:19:22PM +0100, Pedro Ribeiro wrote: > On 9 April 2010 19:09, Daniel Mack <daniel@...aq.de> wrote: > > On Fri, Apr 09, 2010 at 12:01:27PM -0400, Alan Stern wrote: > >> I don't see anything suspicious. The transfer_buffer addresses repeat > >> every 32 URBs, and the DMA addresses cycle almost entirely uniformly > >> from 0x20000000 to 0x23ffffff in units of 0x2000 (there are a few gaps > >> where the interval is a little bigger). > > > > The DMA pointers do indeed look sane. I wanted to take a deeper look at > > this and set up a 64bit system today. However, I fail to see the problem > > here. Pedro, how much RAM does your machine have installed? > > > > Daniel > > > > > > It has 4 GB. Upgraded my machine now to 4GB, but I still can't reproduce this bug. Pedro, can you send your config, please? Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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