Re: USB problem on x86_64: nommu_map_single() issue?

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From: FUJITA Tomonori

Subject: Re: USB problem on x86_64: nommu_map_single() issue?

Date: Tuesday, October 14, 2008 - 4:00 am

On Tue, 14 Oct 2008 12:45:00 +0200
Nicolas Bareil <nico@chdir.org> wrote:

quoted text> Hi Oliver,
> 
> On Tue, Oct 14, 2008 at 11:48:47AM +0200, Oliver Neukum wrote:
> > > On 2.6.27, I can't use any USB device (mass storage, mouse) anymore on my x86_64 system, the devices
> > > are not detected: lsusb returns nothing except the hub.
> > 
> > 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)
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Messages in current thread:

USB problem on x86_64: nommu_map_single() issue?, Nicolas Bareil, (Tue Oct 14, 12:20 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Oliver Neukum, (Tue Oct 14, 2:48 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Nicolas Bareil, (Tue Oct 14, 3:45 am)

Re: USB problem on x86_64: nommu_map_single() issue?, FUJITA Tomonori, (Tue Oct 14, 4:00 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Oliver Neukum, (Tue Oct 14, 4:00 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Nicolas Bareil, (Tue Oct 14, 4:05 am)

Re: USB problem on x86_64: nommu_map_single() issue?, FUJITA Tomonori, (Tue Oct 14, 4:14 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Nicolas Bareil, (Tue Oct 14, 6:43 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Nicolas Bareil, (Tue Oct 14, 7:15 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Yinghai Lu, (Tue Oct 14, 10:11 am)

Re: USB problem on x86_64: nommu_map_single() issue?, Jouni Malinen, (Tue Oct 28, 2:07 am)

[PATCH] x86, gart: fix gart detection for Fam11h CPUs, Joerg Roedel, (Tue Oct 28, 8:13 am)

Re: [PATCH] x86, gart: fix gart detection for Fam11h CPUs, Ingo Molnar, (Tue Oct 28, 9:00 am)

Re: [PATCH] x86, gart: fix gart detection for Fam11h CPUs, Greg KH, (Tue Oct 28, 9:52 am)

Re: [PATCH] x86, gart: fix gart detection for Fam11h CPUs, Joerg Roedel, (Wed Oct 29, 2:55 am)

Re: [PATCH] x86, gart: fix gart detection for Fam11h CPUs, Greg KH, (Wed Oct 29, 4:12 pm)


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