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x86: increase the kernel text limit to 512 MB 

people sometimes do crazy stuff like building really large static
arrays into their kernels or building allyesconfig kernels. Give
more space to the kernel and push modules up a bit: kernel has
512 MB and modules have 1.5 GB.

Should be enough for a few years ;-)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-02-21 12:50:51 +01:00
parent b4e0409a36
commit 85eb69a16a
3 changed files with 5 additions and 5 deletions
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4
arch/x86/kernel/head_64.S
View File

@ -383,12 +383,12 @@ NEXT_PAGE(level2_ident_pgt)
NEXT_PAGE(level2_kernel_pgt)
/*
* 128 MB kernel mapping. We spend a full page on this pagetable
* 512 MB kernel mapping. We spend a full page on this pagetable
* anyway.
*
* The kernel code+data+bss must not be bigger than that.
*
* (NOTE: at +128MB starts the module area, see MODULES_VADDR.
* (NOTE: at +512MB starts the module area, see MODULES_VADDR.
* If you want to increase this then increase MODULES_VADDR
* too.)
*/

4
include/asm-x86/page_64.h
View File

@ -48,10 +48,10 @@
#define __VIRTUAL_MASK_SHIFT 48
/*
* Kernel image size is limited to 128 MB (see level2_kernel_pgt in
* Kernel image size is limited to 512 MB (see level2_kernel_pgt in
* arch/x86/kernel/head_64.S), and it is mapped here:
*/
#define KERNEL_IMAGE_SIZE (128*1024*1024)
#define KERNEL_IMAGE_SIZE (512*1024*1024)
#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL)
#ifndef __ASSEMBLY__

2
include/asm-x86/pgtable_64.h
View File

@ -140,7 +140,7 @@ static inline void native_pgd_clear(pgd_t * pgd)
#define VMALLOC_START _AC(0xffffc20000000000, UL)
#define VMALLOC_END _AC(0xffffe1ffffffffff, UL)
#define VMEMMAP_START _AC(0xffffe20000000000, UL)
#define MODULES_VADDR _AC(0xffffffff88000000, UL)
#define MODULES_VADDR _AC(0xffffffffa0000000, UL)
#define MODULES_END _AC(0xfffffffffff00000, UL)
#define MODULES_LEN (MODULES_END - MODULES_VADDR)