On 2017/10/6 21:31, Jean-Philippe Brucker wrote: > Add two new ioctl for VFIO containers. VFIO_DEVICE_BIND_PROCESS creates a > bond between a container and a process address space, identified by a > device-specific ID named PASID. This allows the device to target DMA > transactions at the process virtual addresses without a need for mapping > and unmapping buffers explicitly in the IOMMU. The process page tables are > shared with the IOMMU, and mechanisms such as PCI ATS/PRI may be used to > handle faults. VFIO_DEVICE_UNBIND_PROCESS removed a bond identified by a > PASID. > How about hide bind/unbind into ioctl(VFIO_SET_IOMMU)? e.g always bind to current process in SET_IOMMU. Not sure about the real use case. > Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@xxxxxxx> > --- > drivers/vfio/vfio_iommu_type1.c | 243 +++++++++++++++++++++++++++++++++++++++- > include/uapi/linux/vfio.h | 69 ++++++++++++ > 2 files changed, 311 insertions(+), 1 deletion(-) >
