[Xen-users] Cannot map over 508 grant reference in Mini-OS

[Wang Cheng]

I tried to map a large number of grant references in Mini-OS using
"gntmap_map_grant_refs". However, this function fails if count is bigger
than 508. I checked xl dmesg, and it says

(XEN) mm.c:4012:d5v0 Could not find L1 PTE for address 40200000

Is this a Mini-OS bug?