Re: [PATCH v6 1/6] docs: IOMMU user API

2020-07-29 Thread Jacob Pan
On Wed, 29 Jul 2020 01:18:04 + "Tian, Kevin" wrote: > > From: Alex Williamson > > Sent: Wednesday, July 29, 2020 3:20 AM > > > [...] > > > + > > > +For example, IOTLB invalidations should always succeed. There is > > > no +architectural way to report back to the vIOMMU if the UAPI > > > d

RE: [PATCH v6 1/6] docs: IOMMU user API

2020-07-28 Thread Tian, Kevin
> From: Alex Williamson > Sent: Wednesday, July 29, 2020 3:20 AM > [...] > > + > > +For example, IOTLB invalidations should always succeed. There is no > > +architectural way to report back to the vIOMMU if the UAPI data is > > +incompatible. If that happens, in order to guarantee IOMMU iosolatio

Re: [PATCH v6 1/6] docs: IOMMU user API

2020-07-28 Thread Alex Williamson
On Thu, 23 Jul 2020 10:25:35 -0700 Jacob Pan wrote: > IOMMU UAPI is newly introduced to support communications between guest > virtual IOMMU and host IOMMU. There has been lots of discussions on how > it should work with VFIO UAPI and userspace in general. > > This document is intended to clarif