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From: Nicolas Bareil <nico@chdir.org>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: nico@chdir.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: USB problem on x86_64: nommu_map_single() issue?
Date: Tue, 14 Oct 2008 13:05:39 +0200	[thread overview]
Message-ID: <20081014110539.GA2997@sd-5945.dedibox.fr> (raw)
In-Reply-To: <20081014200016H.fujita.tomonori@lab.ntt.co.jp>

On Tue, Oct 14, 2008 at 08:00:09PM +0900, FUJITA Tomonori wrote:
> > > Is this a regression? Did it work on earlier kernels?
> > 
> > Yes this is a regression: USB works in 2.6.26.x with (almost) the same configuration.
> 
> With old kernels, you can find something like the following line in
> the boot log?
> 
> PCI-DMA: Using software bounce buffering for IO (SWIOTLB)

Indeed, I have this line:

Oct 14 12:46:29 brew kernel: [    0.004000] Calgary: detecting Calgary via BIOS EBDA area
Oct 14 12:46:29 brew kernel: [    0.004000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!
Oct 14 12:46:29 brew kernel: [    0.004000] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
Oct 14 12:46:29 brew kernel: [    0.004000] Placing software IO TLB between 0x4000000 - 0x8000000
Oct 14 12:46:29 brew kernel: [    0.004000] Memory: 4055544k/4980736k available (2225k kernel code, 138092k reserved, 1079k data, 392k init)
Oct 14 12:46:29 brew kernel: [    0.004000] CPA: page pool initialized 1 of 1 pages preallocated

The full kern.log is available here: http://chdir.org/~nbareil/kern.log-2.6.26-1

Thanks!


  reply	other threads:[~2008-10-14 11:05 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-14  7:20 Nicolas Bareil
2008-10-14  9:48 ` Oliver Neukum
2008-10-14 10:45   ` Nicolas Bareil
2008-10-14 11:00     ` FUJITA Tomonori
2008-10-14 11:05       ` Nicolas Bareil [this message]
2008-10-14 11:14         ` FUJITA Tomonori
2008-10-14 17:11           ` Yinghai Lu
2008-10-14 11:00     ` Oliver Neukum
2008-10-14 13:43       ` Nicolas Bareil
2008-10-14 14:15         ` Nicolas Bareil
2008-10-28  9:07       ` Jouni Malinen
2008-10-28 15:13         ` [PATCH] x86, gart: fix gart detection for Fam11h CPUs Joerg Roedel
2008-10-28 16:00           ` Ingo Molnar
2008-10-28 16:52           ` Greg KH
2008-10-29  9:55             ` Joerg Roedel
2008-10-29 23:12               ` Greg KH

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