[POWERPC] Correct the MAX_CONTEXT definition
When we increased the address space per process to 2^44 bytes, the number of contexts that we could actually use reduced, but we forgot to decrease the MAX_CONTEXT definition. (Fortunately this would only cause problems if we actually had more than 512k user processes running.) This patch corrects the definition. Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -25,8 +25,13 @@ static inline void enter_lazy_tlb(struct mm_struct *mm,
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{
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}
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/*
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* The proto-VSID space has 2^35 - 1 segments available for user mappings.
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* Each segment contains 2^28 bytes. Each context maps 2^44 bytes,
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* so we can support 2^19-1 contexts (19 == 35 + 28 - 44).
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*/
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#define NO_CONTEXT 0
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#define MAX_CONTEXT (0x100000-1)
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#define MAX_CONTEXT ((1UL << 19) - 1)
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extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
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extern void destroy_context(struct mm_struct *mm);
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