>>> On 15.05.18 at 16:36, <roger....@citrix.com> 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> > --- > Changes since v1: > - Add an extra paragraph to clarify the initial MTRR state. > --- > docs/misc/pvh.markdown | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/docs/misc/pvh.markdown b/docs/misc/pvh.markdown > index e85fb15374..fc31132618 100644 > --- a/docs/misc/pvh.markdown > +++ b/docs/misc/pvh.markdown > @@ -92,3 +92,21 @@ 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. > + > +Xen guarantees that RAM regions will always have the WB cache type set in the > +initial MTRR state, either set by the default MTRR type or by other means.
While adding the second paragraph has helped, I still think the first one is lacking "currently" or some such in the first sentence. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
