[PATCH 4.9 38/74] x86/boot: Add missing bootparam that breaks boot on some platforms

[Greg Kroah-Hartman]

From: Corey Minyard <cminyard@xxxxxxxxxx>

Change

  a90118c445cc x86/boot: Save fields explicitly, zero out everything else

modified the way boot parameters were saved on x86.  When this was
backported, e820_table didn't exists, and that change was dropped.
Unfortunately, e820_table did exist, it was just named e820_map
in this kernel version.

This was breaking booting on a Supermicro Super Server/A2SDi-2C-HLN4F
with a Denverton CPU.  Adding e820_map to the saved boot params table
fixes the issue.

Cc: <stable@xxxxxxxxxxxxxxx> # 4.9.x, 4.4.x
Signed-off-by: Corey Minyard <cminyard@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/x86/include/asm/bootparam_utils.h |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/include/asm/bootparam_utils.h
+++ b/arch/x86/include/asm/bootparam_utils.h
@@ -71,6 +71,7 @@ static void sanitize_boot_params(struct
 			BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries),
 			BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer),
 			BOOT_PARAM_PRESERVE(hdr),
+			BOOT_PARAM_PRESERVE(e820_map),
 			BOOT_PARAM_PRESERVE(eddbuf),
 		};