On Mar 14, 2012, at 12:57 PM, Sarah Sharp wrote: > On Wed, Mar 14, 2012 at 09:52:28AM -0400, Tom Goetz wrote: >> >>> >>> Why were you posting there in particular? You're much more likely to >>> get your USB questions answered on this mailing list. :) >> >> I'm concerned that this may be a bug in the Xen PVOPs MSI code. To that end I've posted updates on xen-devel here: >> >> http://lists.xen.org/archives/html/xen-devel/2012-03/msg00904.html >> http://lists.xen.org/archives/html/xen-devel/2012-03/msg00727.html >> http://lists.xen.org/archives/html/xen-devel/2012-03/msg00978.html > > Does the xHCI host work fine without Xen? I.e. running Linux directly > as the host OS, suspending, resuming, and then plugging in a device? It works in Ubuntu 12.04 Beta 1 with Linux 3.2.0. So it's either broken between 3.2.0 and 3.2.5 or it's broken in Xen. I haven't made a direct comparison yet. I'm putting Ubuntu on my SDP now to test that. > >> The con to that theory is that EHCI is also a MSI and works. > > Are you sure EHCI is using MSI? ISTR that it's using legacy PCI IRQs... Your right. I'm not sure why I thought it was MSI. My notes don't support that. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
