Re: [Qemu-devel] [PULL 1/7] exec: Limit translation limiting in address_space_translate to xen

[Paolo Bonzini]

Il 07/05/2014 17:32, Peter Maydell ha scritto:
> > Regarding fixing callers, a known one is virtio-scsi which is a bug and on
> > my todo list.  But another is VFIO, which cannot accept truncation if the
> > IOMMU page size is greater than TARGET_PAGE_SIZE.
>
> The API can't simultaneously allow the implementation to truncate
> and guarantee to the caller that we don't truncate, so one of these
> has to change, surely?

We can provide a function to return the truncation granularity, and add 
to VFIO a check that will prevent using VFIO together with Xen.

Paolo