X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-xtensa%2Ftlb.h;h=31c220faca02ac9cbb3695f735e0221bdc32104a;hb=13c48c490208d9e70d8d66d56f96c5054db69af7;hp=4562b2dcfbc068d25cd3021ee5267eedbf5a14ca;hpb=62778ba1aa2589dc78c36a32edc6f5a6ccaf50c6;p=linux-2.6

diff --git a/include/asm-xtensa/tlb.h b/include/asm-xtensa/tlb.h
index 4562b2dcfb..31c220faca 100644
--- a/include/asm-xtensa/tlb.h
+++ b/include/asm-xtensa/tlb.h
@@ -11,15 +11,37 @@
 #ifndef _XTENSA_TLB_H
 #define _XTENSA_TLB_H
 
-#define tlb_start_vma(tlb,vma)			do { } while (0)
-#define tlb_end_vma(tlb,vma)			do { } while (0)
-#define __tlb_remove_tlb_entry(tlb,pte,addr)	do { } while (0)
+#include <asm/cache.h>
+#include <asm/page.h>
+
+#if (DCACHE_WAY_SIZE <= PAGE_SIZE)
+
+/* Note, read http://lkml.org/lkml/2004/1/15/6 */
+
+# define tlb_start_vma(tlb,vma)			do { } while (0)
+# define tlb_end_vma(tlb,vma)			do { } while (0)
+
+#else
 
+# define tlb_start_vma(tlb, vma)					      \
+	do {								      \
+		if (!tlb->fullmm)					      \
+			flush_cache_range(vma, vma->vm_start, vma->vm_end);   \
+	} while(0)
+
+# define tlb_end_vma(tlb, vma)						      \
+	do {								      \
+		if (!tlb->fullmm)					      \
+			flush_tlb_range(vma, vma->vm_start, vma->vm_end);     \
+	} while(0)
+
+#endif
+
+#define __tlb_remove_tlb_entry(tlb,pte,addr)	do { } while (0)
 #define tlb_flush(tlb)				flush_tlb_mm((tlb)->mm)
 
 #include <asm-generic/tlb.h>
-#include <asm/page.h>
 
-#define __pte_free_tlb(tlb,pte)			pte_free(pte)
+#define __pte_free_tlb(tlb, pte)		pte_free((tlb)->mm, pte)
 
 #endif	/* _XTENSA_TLB_H */