[Xen-devel] [PATCH] use 64-bit arithmetic in reserve_in_boot_e820()

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

Index: 2007-06-18/xen/arch/x86/setup.c
===================================================================
--- 2007-06-18.orig/xen/arch/x86/setup.c        2007-06-18 12:15:35.000000000 
+0200
+++ 2007-06-18/xen/arch/x86/setup.c     2007-06-19 11:13:50.000000000 +0200
@@ -295,14 +295,14 @@ static struct e820map __initdata boot_e8
 /* Reserve area (@s,@e) in the temporary bootstrap e820 map. */
 static void __init reserve_in_boot_e820(unsigned long s, unsigned long e)
 {
-    unsigned long rs, re;
     int i;
 
     for ( i = 0; i < boot_e820.nr_map; i++ )
     {
         /* Have we found the e820 region that includes the specified range? */
-        rs = boot_e820.map[i].addr;
-        re = boot_e820.map[i].addr + boot_e820.map[i].size;
+        uint64_t rs = boot_e820.map[i].addr;
+        uint64_t re = rs + boot_e820.map[i].size;
+
         if ( (s < rs) || (e > re) )
             continue;
 




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