Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [linux-usb-devel] [RFC][PATCH 0/2] x86_64 Early usb debug port support. | Date | Wed, 06 Dec 2006 14:37:29 -0700 |
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Andi Kleen <ak@suse.de> writes:
> \ >> - Host, to which that console connects (through the debug device); >> runs usb_debug, much like any other usb-serial device > > My understanding was that the client could run in user > space only on top of libusb.
Looks like a normal serial port with greg's patch. I still need to try it though.
> One reason is the one I covered in my last mail -- locking of the PCI > type 1 ports. > > However I suppose it would be ok to switch Eric's code between early > pci access and locked one once the PCI subsystem is up and running. > Just don't forget bust_spinlocks()
No pci access on that path.
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