]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-s390/mmu_context.h
2 * include/asm-s390/mmu_context.h
6 * Derived from "include/asm-i386/mmu_context.h"
9 #ifndef __S390_MMU_CONTEXT_H
10 #define __S390_MMU_CONTEXT_H
13 * get a new mmu context.. S390 don't know about contexts.
15 #define init_new_context(tsk,mm) 0
17 #define destroy_context(mm) do { } while (0)
19 static inline void enter_lazy_tlb(struct mm_struct
*mm
,
20 struct task_struct
*tsk
)
24 static inline void switch_mm(struct mm_struct
*prev
, struct mm_struct
*next
,
25 struct task_struct
*tsk
)
29 S390_lowcore
.user_asce
= (__pa(next
->pgd
)&PAGE_MASK
) |
30 (_SEGMENT_TABLE
|USER_STD_MASK
);
31 /* Load home space page table origin. */
32 asm volatile("lctl 13,13,%0"
33 : : "m" (S390_lowcore
.user_asce
) );
35 S390_lowcore
.user_asce
= (__pa(next
->pgd
) & PAGE_MASK
) |
36 (_REGION_TABLE
|USER_STD_MASK
);
37 /* Load home space page table origin. */
38 asm volatile("lctlg 13,13,%0"
39 : : "m" (S390_lowcore
.user_asce
) );
40 #endif /* __s390x__ */
42 cpu_set(smp_processor_id(), next
->cpu_vm_mask
);
45 #define deactivate_mm(tsk,mm) do { } while (0)
47 static inline void activate_mm(struct mm_struct
*prev
,
48 struct mm_struct
*next
)
50 switch_mm(prev
, next
, current
);
51 set_fs(current
->thread
.mm_segment
);