On Thu, May 10, 2018 at 06:15:05PM +0100, Roger Pau Monne wrote: > Provided to both Dom0 and DomUs. > > Signed-off-by: Roger Pau Monné <roger....@citrix.com> > --- > Cc: Andrew Cooper <andrew.coop...@citrix.com> > Cc: George Dunlap <george.dun...@eu.citrix.com> > Cc: Ian Jackson <ian.jack...@eu.citrix.com> > Cc: Jan Beulich <jbeul...@suse.com> > Cc: Julien Grall <julien.gr...@arm.com> > Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> > Cc: Stefano Stabellini <sstabell...@kernel.org> > Cc: Tim Deegan <t...@xen.org> > Cc: Wei Liu <wei.l...@citrix.com> > --- > docs/misc/pvh.markdown | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/docs/misc/pvh.markdown b/docs/misc/pvh.markdown > index e85fb15374..639401a887 100644 > --- a/docs/misc/pvh.markdown > +++ b/docs/misc/pvh.markdown > @@ -92,3 +92,18 @@ event channels. Delivery of those interrupts can be > configured in the same way > as HVM guests, check xen/include/public/hvm/params.h and > xen/include/public/hvm/hvm\_op.h for more information about available > delivery > methods. > + > +## MTRR ## > + > +### Unprivileged guests ### > + > +PVH guests are booted with the default MTRR type set to write-back and MTRR > +enabled. This allows DomUs to start with a sane MTRR state. Note that this > will > +have to be revisited when pci-passthrough is added to PVH in order to set > MMIO > +regions as UC.
My reading is "revisited" implies the default type will change. In fact it shouldn't. We should clarify: for ram it will remain WB, for MMIO holes it will be UC. Please correct me if I'm wrong. Wei. > + > +### Hardware domain ### > + > +A PVH hardware domain is booted with the same MTRR state as the one found on > +the host. This is done because the hardware domain memory map is already a > +modified copy of the host memory map, so the same MTRR setup should work. > -- > 2.17.0 > _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
