On Mon, Jun 12, 2017 at 11:17:25AM +0200, Juergen Gross wrote: > While searching for the reason for a HVM domU performance problem > I came across Seabios' hypercall page: it is usually located at the > end of guest memory and marked as "reserved" in the guest E820 map. > > This will make it impossible for a Linux guest to use a large page > mapping for the direct map of memory for the last memory chunk. > > Would it be possible to put the hypercall page into low memory? > There seems to be plenty of space below 1MB according to /proc/iomem:
The changeset that added xen support doesn't say why high address was chosen. I suppose you can move it else where just fine. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
