From 5a216a20837c5f5fa1ca4b8ae8991ffd96b08e6f Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Sat, 9 Feb 2008 18:24:36 +0100 Subject: [S390] Add four level page tables for CONFIG_64BIT=y. Signed-off-by: Martin Schwidefsky --- include/asm-s390/processor.h | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) (limited to 'include/asm-s390/processor.h') diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h index e8785634cbd..5a21f457d58 100644 --- a/include/asm-s390/processor.h +++ b/include/asm-s390/processor.h @@ -64,24 +64,28 @@ extern int get_cpu_capability(unsigned int *); */ #ifndef __s390x__ -# define TASK_SIZE (0x80000000UL) -# define TASK_UNMAPPED_BASE (TASK_SIZE / 2) -# define DEFAULT_TASK_SIZE (0x80000000UL) +#define TASK_SIZE (1UL << 31) +#define TASK_UNMAPPED_BASE (1UL << 30) #else /* __s390x__ */ -# define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk, TIF_31BIT) ? \ - (0x80000000UL) : (0x40000000000UL)) -# define TASK_SIZE TASK_SIZE_OF(current) -# define TASK_UNMAPPED_BASE (TASK_SIZE / 2) -# define DEFAULT_TASK_SIZE (0x40000000000UL) +#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk,TIF_31BIT) ? \ + (1UL << 31) : (1UL << 53)) +#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \ + (1UL << 30) : (1UL << 41)) +#define TASK_SIZE TASK_SIZE_OF(current) #endif /* __s390x__ */ #ifdef __KERNEL__ -#define STACK_TOP TASK_SIZE -#define STACK_TOP_MAX DEFAULT_TASK_SIZE +#ifndef __s390x__ +#define STACK_TOP (1UL << 31) +#else /* __s390x__ */ +#define STACK_TOP (1UL << (test_thread_flag(TIF_31BIT) ? 31:53)) +#endif /* __s390x__ */ + +#define STACK_TOP_MAX STACK_TOP #endif -- cgit v1.2.3