Michael S. Tsirkin wrote:
On Thu, Jul 09, 2009 at 09:54:43AM -0500, Anthony Liguori wrote:
I know it's not strictly needed for PCI pass through, but it would be
useful to register the IO regions via UIO. The userspace implementation
would then use UIO strictly instead of poking the sysfs pci info
directly. I think that ends up being cleaner.
Hmm, this is good for specific drivers, but for a generic one like qemu,
still need sysfs to figure out the size at least,
size of what?
and
we need config accesses which uio does not support now.
And if you use libpci as qemu does now, this interface will likely
go unused. So .. there does not seem to be much point at the moment.
Right, I would expect uio to replace libpci.
My idea is, let's start with a minimal interface, longer term
let's see if we can add config access, mmap and other stuff like eventfd.
Makes sense?
It can certainly grow more features down the road.
Regards,
Anthony Liguori
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