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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2005-05-01 11:58:51 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 11:58:51 -0400
commitf9ba70535dc12d9eb57d466a2ecd749e16eca866 (patch)
tree7032500f7697e37e8e93869bdcefd4ab5473a136 /Documentation
parentbe9e68703c53fece406bc2e40976a5cfe2a8e77f (diff)
[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 'Documentation')
-rw-r--r--Documentation/i386/zero-page.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/i386/zero-page.txt b/Documentation/i386/zero-page.txt
index 67c053a099ed..df28c7416781 100644
--- a/Documentation/i386/zero-page.txt
+++ b/Documentation/i386/zero-page.txt
@@ -79,6 +79,6 @@ Offset Type Description
790x22c unsigned long ramdisk_max 790x22c unsigned long ramdisk_max
800x230 16 bytes trampoline 800x230 16 bytes trampoline
810x290 - 0x2cf EDD_MBR_SIG_BUFFER (edd.S) 810x290 - 0x2cf EDD_MBR_SIG_BUFFER (edd.S)
820x2d0 - 0x600 E820MAP 820x2d0 - 0xd00 E820MAP
830x600 - 0x7ff EDDBUF (edd.S) for disk signature read sector 830xd00 - 0xeff EDDBUF (edd.S) for disk signature read sector
840x600 - 0x7eb EDDBUF (edd.S) for edd data 840xd00 - 0xeeb EDDBUF (edd.S) for edd data