xen: build on ARM

Collection of fixes to build QEMU with Xen support on ARM:
- use xenstore_read_fe_uint64 to retrieve the page-ref (xenfb);
- use xen_pfn_t instead of unsigned long in xenfb;
- unsigned long/xenpfn_t in xen_remove_from_physmap;
- in xen-mapcache.c use HOST_LONG_BITS to check for QEMU's address space
size.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/xen-hvm.c b/xen-hvm.c
index bafdf12..c928b36 100644
--- a/xen-hvm.c
+++ b/xen-hvm.c
@@ -390,7 +390,7 @@ static int xen_remove_from_physmap(XenIOState *state,
     start_addr >>= TARGET_PAGE_BITS;
     phys_offset >>= TARGET_PAGE_BITS;
     for (i = 0; i < size; i++) {
-        unsigned long idx = start_addr + i;
+        xen_pfn_t idx = start_addr + i;
         xen_pfn_t gpfn = phys_offset + i;
 
         rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);