Merge branch 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kerne...

[pandora-kernel.git] / arch / x86 / xen / setup.c

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 1093f80..b2c7179 100644 (file)
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -173,9 +173,21 @@ static unsigned long __init xen_get_max_pages(void)
        domid_t domid = DOMID_SELF;
        int ret;
 
-       ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
-       if (ret > 0)
-               max_pages = ret;
+       /*
+        * For the initial domain we use the maximum reservation as
+        * the maximum page.
+        *
+        * For guest domains the current maximum reservation reflects
+        * the current maximum rather than the static maximum. In this
+        * case the e820 map provided to us will cover the static
+        * maximum region.
+        */
+       if (xen_initial_domain()) {
+               ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
+               if (ret > 0)
+                       max_pages = ret;
+       }
+
        return min(max_pages, MAX_DOMAIN_PAGES);
 }