59615ecdb5
This provides a sledgehammer approach for clearing the TLBs, only to be used in cases where we know we will never want to use the mappings again and have no interest in preserving state. This also destroys wired entries. The primary use for this is when we are either entering or exiting the kernel completely, in the latter case as a precursor for CPU reset by MMU. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
#ifndef __ASM_SH_TLBFLUSH_H
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#define __ASM_SH_TLBFLUSH_H
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/*
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* TLB flushing:
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*
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* - flush_tlb_all() flushes all processes TLBs
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* - flush_tlb_mm(mm) flushes the specified mm context TLB's
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* - flush_tlb_page(vma, vmaddr) flushes one page
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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*/
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extern void local_flush_tlb_all(void);
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extern void local_flush_tlb_mm(struct mm_struct *mm);
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extern void local_flush_tlb_range(struct vm_area_struct *vma,
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unsigned long start,
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unsigned long end);
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extern void local_flush_tlb_page(struct vm_area_struct *vma,
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unsigned long page);
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extern void local_flush_tlb_kernel_range(unsigned long start,
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unsigned long end);
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extern void local_flush_tlb_one(unsigned long asid, unsigned long page);
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extern void __flush_tlb_global(void);
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#ifdef CONFIG_SMP
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extern void flush_tlb_all(void);
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extern void flush_tlb_mm(struct mm_struct *mm);
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extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long page);
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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extern void flush_tlb_one(unsigned long asid, unsigned long page);
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#else
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#define flush_tlb_all() local_flush_tlb_all()
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#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
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#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
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#define flush_tlb_one(asid, page) local_flush_tlb_one(asid, page)
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#define flush_tlb_range(vma, start, end) \
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local_flush_tlb_range(vma, start, end)
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#define flush_tlb_kernel_range(start, end) \
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local_flush_tlb_kernel_range(start, end)
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#endif /* CONFIG_SMP */
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#endif /* __ASM_SH_TLBFLUSH_H */
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