Messages in this thread | | | Date | Tue, 14 Oct 2008 20:00:09 +0900 | Subject | Re: USB problem on x86_64: nommu_map_single() issue? | From | FUJITA Tomonori <> |
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On Tue, 14 Oct 2008 12:45:00 +0200 Nicolas Bareil <nico@chdir.org> wrote:
> 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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