diff options
| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2008-08-25 21:03:32 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-01 12:06:33 +0100 |
| commit | 8d5796d2ec6b5a4e7a52861144e63af438d6f8f7 (patch) | |
| tree | 9c348b627862a7408aeafdee30cacb08ea69fd60 /arch/arm/include/asm/memory.h | |
| parent | 2d4b6c9aeb94cb9cb5c250f23e81e6d00b461372 (diff) | |
| download | linux-8d5796d2ec6b5a4e7a52861144e63af438d6f8f7.tar.bz2 | |
[ARM] 5222/1: Allow configuring user:kernel split via Kconfig
This patch adds a config option (CONFIG_VMSPLIT_*) to allow choosing
between 3:1, 2:2 and 1:3 user:kernel memory splits.
Tested-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/memory.h')
| -rw-r--r-- | arch/arm/include/asm/memory.h | 30 |
1 files changed, 10 insertions, 20 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index bf7c737c9226..7e8d22fef29c 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -13,30 +13,27 @@ #ifndef __ASM_ARM_MEMORY_H #define __ASM_ARM_MEMORY_H +#include <linux/compiler.h> +#include <linux/const.h> +#include <mach/memory.h> +#include <asm/sizes.h> + /* * Allow for constants defined here to be used from assembly code * by prepending the UL suffix only with actual C code compilation. */ -#ifndef __ASSEMBLY__ -#define UL(x) (x##UL) -#else -#define UL(x) (x) -#endif - -#include <linux/compiler.h> -#include <mach/memory.h> -#include <asm/sizes.h> +#define UL(x) _AC(x, UL) #ifdef CONFIG_MMU -#ifndef TASK_SIZE /* + * PAGE_OFFSET - the virtual address of the start of the kernel image * TASK_SIZE - the maximum size of a user space task. * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area */ -#define TASK_SIZE UL(0xbf000000) -#define TASK_UNMAPPED_BASE UL(0x40000000) -#endif +#define PAGE_OFFSET UL(CONFIG_PAGE_OFFSET) +#define TASK_SIZE (UL(CONFIG_PAGE_OFFSET) - UL(0x01000000)) +#define TASK_UNMAPPED_BASE (UL(CONFIG_PAGE_OFFSET) / 3) /* * The maximum size of a 26-bit user space task. @@ -44,13 +41,6 @@ #define TASK_SIZE_26 UL(0x04000000) /* - * Page offset: 3GB - */ -#ifndef PAGE_OFFSET -#define PAGE_OFFSET UL(0xc0000000) -#endif - -/* * The module space lives between the addresses given by TASK_SIZE * and PAGE_OFFSET - it must be within 32MB of the kernel text. */ |