RE: [RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID

2021-09-22 Thread Tian, Kevin
> From: Jason Gunthorpe > Sent: Wednesday, September 22, 2021 8:59 PM > > On Wed, Sep 22, 2021 at 03:56:18AM +, Tian, Kevin wrote: > > > From: Jason Gunthorpe > > > Sent: Wednesday, September 22, 2021 2:04 AM > > > > > > On Sun, Sep 19, 2021 at 02:38:43PM +0800, Liu Yi L wrote: > > > > This

Re: [RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID

2021-09-22 Thread Jason Gunthorpe via iommu
On Wed, Sep 22, 2021 at 03:56:18AM +, Tian, Kevin wrote: > > From: Jason Gunthorpe > > Sent: Wednesday, September 22, 2021 2:04 AM > > > > On Sun, Sep 19, 2021 at 02:38:43PM +0800, Liu Yi L wrote: > > > This patch adds interface for userspace to attach device to specified > > > IOASID. > > >

RE: [RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID

2021-09-21 Thread Tian, Kevin
> From: Jason Gunthorpe > Sent: Wednesday, September 22, 2021 2:04 AM > > On Sun, Sep 19, 2021 at 02:38:43PM +0800, Liu Yi L wrote: > > This patch adds interface for userspace to attach device to specified > > IOASID. > > > > Note: > > One device can only be attached to one IOASID in this

Re: [RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID

2021-09-21 Thread Jason Gunthorpe via iommu
On Sun, Sep 19, 2021 at 02:38:43PM +0800, Liu Yi L wrote: > This patch adds interface for userspace to attach device to specified > IOASID. > > Note: > One device can only be attached to one IOASID in this version. This is > on par with what vfio provides today. In the future this restriction can

[RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID

2021-09-19 Thread Liu Yi L
This patch adds interface for userspace to attach device to specified IOASID. Note: One device can only be attached to one IOASID in this version. This is on par with what vfio provides today. In the future this restriction can be relaxed when multiple I/O address spaces are supported per device