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| author |   Greg Ungerer <gerg@uclinux.org> | 2010-05-24 11:22:05 +1000 |
|---|---|---|
| committer | Greg Ungerer <gerg@uclinux.org> | 2010-05-24 13:29:54 +1000 |
| commit | cc24c405949e3d4418a90014d10166679d78141a (patch) | |
| tree | 4348ca3ae3839f794e1326499f0da51dbad1271e /arch/m68k | |
| parent | m68knommu: fix broken use of BUAD_TABLE_SIZE in 68328serial driver (diff) | |
| download | linux-dev-cc24c405949e3d4418a90014d10166679d78141a.tar.xz linux-dev-cc24c405949e3d4418a90014d10166679d78141a.zip | |
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 <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/include/asm/processor.h | 4 |
1 files changed, 4 insertions, 0 deletions
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 |