xen: fix for xen guest with mem > 3.7G
authorJeremy Fitzhardinge <jeremy@goop.org>
Sun, 14 Sep 2008 14:42:23 +0000 (07:42 -0700)
committerIngo Molnar <mingo@elte.hu>
Sun, 14 Sep 2008 14:46:34 +0000 (16:46 +0200)
PFN_PHYS() can truncate large addresses unless its passed a suitable
large type.  This is fixed more generally in the patch series
introducing phys_addr_t, but we need a short-term fix to solve a
Xen regression reported by Roberto De Ioris.

Reported-by: Roberto De Ioris <roberto@unbit.it>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/xen/setup.c

index b6acc3a..d679010 100644 (file)
@@ -42,7 +42,7 @@ char * __init xen_memory_setup(void)
 
        e820.nr_map = 0;
 
-       e820_add_region(0, PFN_PHYS(max_pfn), E820_RAM);
+       e820_add_region(0, PFN_PHYS((u64)max_pfn), E820_RAM);
 
        /*
         * Even though this is normal, usable memory under Xen, reserve