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Linux/arch/xtensa/include/asm/tlb.h

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  1 /*
  2  * include/asm-xtensa/tlb.h
  3  *
  4  * This file is subject to the terms and conditions of the GNU General Public
  5  * License.  See the file "COPYING" in the main directory of this archive
  6  * for more details.
  7  *
  8  * Copyright (C) 2001 - 2005 Tensilica Inc.
  9  */
 10 
 11 #ifndef _XTENSA_TLB_H
 12 #define _XTENSA_TLB_H
 13 
 14 #include <asm/cache.h>
 15 #include <asm/page.h>
 16 
 17 #if (DCACHE_WAY_SIZE <= PAGE_SIZE)
 18 
 19 /* Note, read http://lkml.org/lkml/2004/1/15/6 */
 20 
 21 # define tlb_start_vma(tlb,vma)                 do { } while (0)
 22 # define tlb_end_vma(tlb,vma)                   do { } while (0)
 23 
 24 #else
 25 
 26 # define tlb_start_vma(tlb, vma)                                              \
 27         do {                                                                  \
 28                 if (!tlb->fullmm)                                             \
 29                         flush_cache_range(vma, vma->vm_start, vma->vm_end);   \
 30         } while(0)
 31 
 32 # define tlb_end_vma(tlb, vma)                                                \
 33         do {                                                                  \
 34                 if (!tlb->fullmm)                                             \
 35                         flush_tlb_range(vma, vma->vm_start, vma->vm_end);     \
 36         } while(0)
 37 
 38 #endif
 39 
 40 #define __tlb_remove_tlb_entry(tlb,pte,addr)    do { } while (0)
 41 #define tlb_flush(tlb)                          flush_tlb_mm((tlb)->mm)
 42 
 43 #include <asm-generic/tlb.h>
 44 
 45 #define __pte_free_tlb(tlb, pte, address)       pte_free((tlb)->mm, pte)
 46 
 47 #endif  /* _XTENSA_TLB_H */
 48 

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