Re: Requirement to get BAR pci_bus_address in user space

From: Srinath Mannam
Date: Thu Jun 14 2018 - 06:30:03 EST

++ Alex Williamson, kvm,

Hi Christoph,

Thank you for quick reply.

If we want to add this in vfio then I think we need to do the same in
uio case also.

As I mentioned in previous mail, in the current implementation
resource information (address and size) is gathering from resource
named file created in /sys directory.
So I expect it would be better to have similar method as existing in sysfs.


On Thu, Jun 14, 2018 at 3:50 PM, Christoph Hellwig <hch@xxxxxx> wrote:
> The only safe way to use PCI(e) devices in userspace is through vfio.
> I think that is where you need to take your inquiries.