On Tue, 2015-04-21 at 16:36 +0100, Ian Jackson wrote: > This has a variety of beneficial implications: > > * The kernel becomes more like the kind of distro kernels that Xen > users are probably using. > > * We are more likely to discover any bugs in Linux where Linux > running under Xen (eg as dom0) fights with Xen for control of io > mediation resources or otherwise mishandles the situation. > > * A pleasant side effect is that in a kernel which does not yet have > "config: Enable NEED_DMA_MAP_STATE when SWIOTLB is selected" > (a bugfix), enabling INTEL_IOMMU has the side effect of enabling > NEED_DMA_MAP_STATE and thus working around the bug. > > The list of options to enable was derived by eyeballing > drivers/iommu/Kconfig from 3.14.34. > > I will leave the question of whether to enable any ARM IOMMU options > for the Xen ARM folks to consider.
I've not got time right now, but lets not block on that: > Signed-off-by: Ian Jackson <ian.jack...@eu.citrix.com> > CC: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> > CC: Boris Ostrovsky <boris.ostrov...@oracle.com> > CC: David Vrabel <david.vra...@citrix.com> > CC: Andrew Cooper <andrew.coop...@citrix.com> Acked-by: Ian Campbell <ian.campb...@citrix.com> Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
