On 18/04/16 15:00, Quan Xu wrote: > If IOMMU mapping and unmapping failed, the domain (with the exception of > the hardware domain) is crashed, treated as a fatal error. Rollback can > be lighter weight. > > For the hardware domain, we do things on a best effort basis. When rollback > is not feasible (in early initialization phase or trade-off of complexity), > at least, unmap upon maps error or then throw out error message. > > IOMMU unmapping should perhaps continue despite an error, in an attempt to > do best effort cleanup. > > Signed-off-by: Quan Xu <quan...@intel.com>
FWIW, looking through this I think Jan and Kevin covered everything I would have brought up. -George _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel