On Fri, 2015-09-18 at 09:53 +0100, Ian Campbell wrote: > On Thu, 2015-09-17 at 19:00 +0100, Julien Grall wrote: > > On GICv2, the GIC virtual CPU interface is at minimum 8KB. Due some to > > some necessary quirk for GIC using 64KB stride, we are mapping the > > region in 2 time. > > The first mapping is 4KB and the second one is 8KB, i.e 12KB in total. > > Although the minimum supported size (and widely used) is 8KB. This > > means > > that we are mapping 4KB more to any guest using GICv2. > > > > While this looks scary at first glance, the GIC virtual CPU interface > > is > > most frequently at the end the GIC I/O region. So we will most likely > > map an an unused I/O region or a mirrored version of GICV for platform > > using 64KB stride. > > > > Nonetheless, fix the second mapping to only map 4KB. > > > > Signed-off-by: Julien Grall <julien.gr...@citrix.com> > > Acked-by: Ian Campbell <ian.campb...@citrix.com> > > > --- > > > > This is a candidate for Xen 4.6 and backport to Xen 4.5. > > I concur and with Wei not being around I shall plan to apply later today > unless there are objections.
I got distracted. Now applied to staging and staging-4.6 now and noted for later application to 4.5 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
