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[S390] Add four level page tables for CONFIG_64BIT=y.

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Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2008-02-09 18:24:36 +01:00
parent 146e4b3c8b
commit 5a216a2083
8 changed files with 124 additions and 48 deletions
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24
include/asm-s390/processor.h
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@@ -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