x86: move reserve_setup_data to setup.c
Ying Huang would like setup_data to be reserved, but not included in the
no save range.
Here we try to modify the e820 table to reserve that range early.
also add that in early_res in case bootloader messes up with the ramdisk.
other solution would be
1. add early_res_to_highmem...
2. early_res_to_e820...
but they could reserve another type memory wrongly, if early_res has some
resource reserved early, and not needed later, but it is not removed from
early_res in time. Like the RAMDISK (already handled).
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: andi@firstfloor.org
Tested-by: Huang, Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index f622685..45e904f 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -44,6 +44,9 @@
#define E820_ACPI 3
#define E820_NVS 4
+/* reserved RAM used by kernel itself */
+#define E820_RESERVED_KERN 128
+
#ifndef __ASSEMBLY__
struct e820entry {
__u64 addr; /* start of memory segment */