On Mon, 2 Nov 2020 18:44:11 +0100 Paolo Bonzini <pbonz...@redhat.com> wrote:
> On 02/11/20 18:37, Alex Williamson wrote: > > I think we still have the issue at the vfio ioctl which takes __u64 iova > > and size parameters, in bytes. Therefore we cannot unmap an entire > > 64-bit address space with a single ioctl call. We'd need to make use > > of a flag to modify the ioctl behavior to work terms of some page size > > to achieve this, for example if iova and size were in terms of 4K > > pages, we wouldn't have this issue. Thanks, > > What happens to the last page if size is unaligned (e.g. iova==0, size== > 2^64-1)? Both args are currently required to be aligned to the minimum IOMMU page size. Thanks, Alex
