Re: [PATCH v2 13/40] vfio: Add support for Shared Virtual Addressing

Jean-Philippe Brucker
2018-09-03T10:34:29Z

On 01/09/18 03:23, Xu Zaibo wrote:
> As one application takes a whole function while using VFIO-PCI, why do
> the application and the
> function need to enable PASID capability? (Since just one I/O page table
> is enough for them.)

At the moment the series doesn't provide support for SVA without PASID
(on the I/O page fault path, 08/40). In addition the BIND ioctl could be
used by the owner application to bind other processes (slaves) and
perform sub-assignment. But that feature is incomplete because we don't
send stop_pasid notification to the owner when a slave dies.

Thanks,
Jean