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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2005-05-01 08:58:51 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:58:51 -0700
commitf9ba70535dc12d9eb57d466a2ecd749e16eca866 (patch)
tree7032500f7697e37e8e93869bdcefd4ab5473a136 /include/asm-x86_64
parentbe9e68703c53fece406bc2e40976a5cfe2a8e77f (diff)
downloadlinux-f9ba70535dc12d9eb57d466a2ecd749e16eca866.tar.gz
[PATCH] Increase number of e820 entries hard limit from 32 to 128
The specifications that talk about E820 map doesn't have an upper limit on the number of e820 entries. But, today's kernel has a hard limit of 32. With increase in memory size, we are seeing the number of E820 entries reaching close to 32. Patch below bumps the number upto 128. The patch changes the location of EDDBUF in zero-page (as it comes after E820). As, EDDBUF is not used by boot loaders, this patch should not have any effect on bootloader-setup code interface. Patch covers both i386 and x86-64. Tested on: * grub booting bzImage * lilo booting bzImage with EDID info enabled * pxeboot of bzImage Side-effect: bss increases by ~ 2K and init.data increases by ~7.5K on all systems, due to increase in size of static arrays. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/bootsetup.h3
-rw-r--r--include/asm-x86_64/e820.h2
2 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-x86_64/bootsetup.h b/include/asm-x86_64/bootsetup.h
index b570a484dc5..b829f7b534b 100644
--- a/include/asm-x86_64/bootsetup.h
+++ b/include/asm-x86_64/bootsetup.h
@@ -2,7 +2,8 @@
#ifndef _X86_64_BOOTSETUP_H
#define _X86_64_BOOTSETUP_H 1
-extern char x86_boot_params[2048];
+#define BOOT_PARAM_SIZE 4096
+extern char x86_boot_params[BOOT_PARAM_SIZE];
/*
* This is set up by the setup-routine at boot-time
diff --git a/include/asm-x86_64/e820.h b/include/asm-x86_64/e820.h
index 08f83a4b4f4..8e94edf0b98 100644
--- a/include/asm-x86_64/e820.h
+++ b/include/asm-x86_64/e820.h
@@ -14,7 +14,7 @@
#include <linux/mmzone.h>
#define E820MAP 0x2d0 /* our map */
-#define E820MAX 32 /* number of entries in E820MAP */
+#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#define E820_RAM 1