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SubjectRe: Requirement to get BAR pci_bus_address in user space
On 2018-06-14 06:29, Srinath Mannam wrote:
> ++ 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.

Can you give some info on why you need the actual bar address value?

> Regards,
> Srinath.
> On Thu, Jun 14, 2018 at 3:50 PM, Christoph Hellwig <> 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.

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