From: Greg Ungerer Date: Mon, 24 May 2010 01:22:05 +0000 (+1000) Subject: m68knommu: remove size limit on non-MMU TASK_SIZE X-Git-Tag: v2.6.35-rc1~267^2~6 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cc24c405949e3d4418a90014d10166679d78141a;p=karo-tx-linux.git m68knommu: remove size limit on non-MMU TASK_SIZE The TASK_SIZE define is used in some places as a limit on the size of the virtual address space of a process. On non-MMU systems those addresses used in comparison will be physical addresses, and they could be anywhere in the 32bit physical address space. So for !CONFIG_MMU systems set the TASK_SIZE to the maximum physical address. Signed-off-by: Greg Ungerer --- diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h index cbd3d4751dd2..7a6a7590cc02 100644 --- a/arch/m68k/include/asm/processor.h +++ b/arch/m68k/include/asm/processor.h @@ -44,11 +44,15 @@ static inline void wrusp(unsigned long usp) * User space process size: 3.75GB. This is hardcoded into a few places, * so don't change it unless you know what you are doing. */ +#ifdef CONFIG_MMU #ifndef CONFIG_SUN3 #define TASK_SIZE (0xF0000000UL) #else #define TASK_SIZE (0x0E000000UL) #endif +#else +#define TASK_SIZE (0xFFFFFFFFUL) +#endif #ifdef __KERNEL__ #define STACK_TOP TASK_SIZE