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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-s390x/] [mmu_context.h] - Blame information for rev 1765

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Line No. Rev Author Line
1 1275 phoenix
/*
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 *  include/asm-s390/mmu_context.h
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 *
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 *  S390 version
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 *
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 *  Derived from "include/asm-i386/mmu_context.h"
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 */
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#ifndef __S390_MMU_CONTEXT_H
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#define __S390_MMU_CONTEXT_H
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/*
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 * get a new mmu context.. S390 don't know about contexts.
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 */
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#define init_new_context(tsk,mm)        0
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#define destroy_context(mm)             flush_tlb_mm(mm)
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static inline void enter_lazy_tlb(struct mm_struct *mm,
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                                  struct task_struct *tsk, unsigned cpu)
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{
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}
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static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
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                             struct task_struct *tsk, unsigned cpu)
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{
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        unsigned long pgd;
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        if (prev != next) {
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                pgd = (__pa(next->pgd)&PAGE_MASK) | (_REGION_TABLE|USER_STD_MASK);
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                /* Load page tables */
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                asm volatile("    lctlg 7,7,%0\n"   /* secondary space */
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                             "    lctlg 13,13,%0\n" /* home space */
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                             : : "m" (pgd) );
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        }
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        set_bit(cpu, &next->cpu_vm_mask);
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}
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extern inline void activate_mm(struct mm_struct *prev,
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                               struct mm_struct *next)
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{
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        switch_mm(prev, next, current, smp_processor_id());
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}
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#endif

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