Re: User mode drivers: part 2: PCI device handling (patch 1/2 for 2.6.11)

From: Peter Chubb
Date: Fri Mar 11 2005 - 03:36:36 EST

>>>>> "Greg" == Greg KH <greg@xxxxxxxxx> writes:

Greg> On Fri, Mar 11, 2005 at 02:37:17PM +1100, Peter Chubb wrote:
>> +/* + * The PCI subsystem is implemented as yet-another pseudo
>> filesystem, + * albeit one that is never mounted. + * This is its
>> magic number. + */ +#define USR_PCI_MAGIC (0x12345678)

Greg> If you make it a real, mountable filesystem, then you don't need
Greg> to have any of your new syscalls, right? Why not just do that
Greg> instead?

The only call that would go is usr_pci_open() -- you'd still need
usr_pci_map(), usr_pci_unmap() and usr_pci_get_consistent().

Dr Peter Chubb peterc AT
The technical we do immediately, the political takes *forever*

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