x86: extend e820 early_res support 32bit -fix #3

introduce init_pg_table_start, so xen PV could specify the value.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 08b47a2f7af0..de9c5ee77d07 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -71,6 +71,7 @@
 /* This value is set up by the early boot code to point to the value
    immediately after the boot time page tables.  It contains a *physical*
    address, and must not be in the .bss segment! */
+unsigned long init_pg_tables_start __initdata = ~0UL;
 unsigned long init_pg_tables_end __initdata = ~0UL;
 
 /*
@@ -485,6 +486,10 @@ static void __init reserve_initrd(void)
                 return;
         }
 
+        printk(KERN_INFO "old RAMDISK: %08llx - %08llx\n", ramdisk_image,
+                        ramdisk_end);
+
+
         if (ramdisk_end <= end_of_lowmem) {
                 /* All in lowmem, easy case */
                 /*
@@ -511,6 +516,8 @@ static void __init reserve_initrd(void)
                          "NEW RAMDISK");
         initrd_start = ramdisk_here + PAGE_OFFSET;
         initrd_end   = initrd_start + ramdisk_size;
+        printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n",
+                         ramdisk_here, ramdisk_here + ramdisk_size);
 
         do_relocate_initrd = true;
 }