X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-powerpc%2Fpage_64.h;h=3fb061bab9ecd75f0fc912d23fc7cbb71f5c45c7;hb=6f91fe88e4e28b40b4f08d99e0ea6d17b70e9567;hp=c16f106b5373f0baa4a71b09952ae4113f938d0e;hpb=0174f72f848dfe7dc7488799776303c81b181b16;p=linux-2.6

diff --git a/include/asm-powerpc/page_64.h b/include/asm-powerpc/page_64.h
index c16f106b53..3fb061bab9 100644
--- a/include/asm-powerpc/page_64.h
+++ b/include/asm-powerpc/page_64.h
@@ -1,5 +1,6 @@
 #ifndef _ASM_POWERPC_PAGE_64_H
 #define _ASM_POWERPC_PAGE_64_H
+#ifdef __KERNEL__
 
 /*
  * Copyright (C) 2001 PPC64 Team, IBM Corp
@@ -25,16 +26,6 @@
  */
 #define PAGE_FACTOR		(PAGE_SHIFT - HW_PAGE_SHIFT)
 
-#define REGION_SIZE   4UL
-#define REGION_SHIFT  60UL
-#define REGION_MASK   (((1UL<<REGION_SIZE)-1UL)<<REGION_SHIFT)
-
-#define VMALLOCBASE		ASM_CONST(0xD000000000000000)
-#define VMALLOC_REGION_ID	(VMALLOCBASE >> REGION_SHIFT)
-#define KERNEL_REGION_ID	(KERNELBASE >> REGION_SHIFT)
-#define USER_REGION_ID		(0UL)
-#define REGION_ID(ea)		(((unsigned long)(ea)) >> REGION_SHIFT)
-
 /* Segment size */
 #define SID_SHIFT		28
 #define SID_MASK		0xfffffffffUL
@@ -86,7 +77,11 @@ static inline void copy_page(void *to, void *from)
 extern u64 ppc64_pft_size;
 
 /* Large pages size */
+#ifdef CONFIG_HUGETLB_PAGE
 extern unsigned int HPAGE_SHIFT;
+#else
+#define HPAGE_SHIFT PAGE_SHIFT
+#endif
 #define HPAGE_SIZE		((1UL) << HPAGE_SHIFT)
 #define HPAGE_MASK		(~(HPAGE_SIZE - 1))
 #define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
@@ -99,8 +94,9 @@ extern unsigned int HPAGE_SHIFT;
 #define HTLB_AREA_SIZE		(1UL << HTLB_AREA_SHIFT)
 #define GET_HTLB_AREA(x)	((x) >> HTLB_AREA_SHIFT)
 
-#define LOW_ESID_MASK(addr, len)    (((1U << (GET_ESID(addr+len-1)+1)) \
-		                      - (1U << GET_ESID(addr))) & 0xffff)
+#define LOW_ESID_MASK(addr, len)    \
+	(((1U << (GET_ESID(min((addr)+(len)-1, 0x100000000UL))+1)) \
+	  - (1U << GET_ESID(min((addr), 0x100000000UL)))) & 0xffff)
 #define HTLB_AREA_MASK(addr, len)   (((1U << (GET_HTLB_AREA(addr+len-1)+1)) \
 		                      - (1U << GET_HTLB_AREA(addr))) & 0xffff)
 
@@ -109,17 +105,21 @@ extern unsigned int HPAGE_SHIFT;
 #define ARCH_HAS_SETCLEAR_HUGE_PTE
 
 #define touches_hugepage_low_range(mm, addr, len) \
-	(LOW_ESID_MASK((addr), (len)) & (mm)->context.low_htlb_areas)
+	(((addr) < 0x100000000UL) \
+	 && (LOW_ESID_MASK((addr), (len)) & (mm)->context.low_htlb_areas))
 #define touches_hugepage_high_range(mm, addr, len) \
-	(HTLB_AREA_MASK((addr), (len)) & (mm)->context.high_htlb_areas)
+	((((addr) + (len)) > 0x100000000UL) \
+	  && (HTLB_AREA_MASK((addr), (len)) & (mm)->context.high_htlb_areas))
 
 #define __within_hugepage_low_range(addr, len, segmask) \
-	((LOW_ESID_MASK((addr), (len)) | (segmask)) == (segmask))
+	( (((addr)+(len)) <= 0x100000000UL) \
+	  && ((LOW_ESID_MASK((addr), (len)) | (segmask)) == (segmask)))
 #define within_hugepage_low_range(addr, len) \
 	__within_hugepage_low_range((addr), (len), \
 				    current->mm->context.low_htlb_areas)
 #define __within_hugepage_high_range(addr, len, zonemask) \
-	((HTLB_AREA_MASK((addr), (len)) | (zonemask)) == (zonemask))
+	( ((addr) >= 0x100000000UL) \
+	  && ((HTLB_AREA_MASK((addr), (len)) | (zonemask)) == (zonemask)))
 #define within_hugepage_high_range(addr, len) \
 	__within_hugepage_high_range((addr), (len), \
 				    current->mm->context.high_htlb_areas)
@@ -131,9 +131,9 @@ extern unsigned int HPAGE_SHIFT;
 
 #define in_hugepage_area(context, addr) \
 	(cpu_has_feature(CPU_FTR_16M_PAGE) && \
-	 ( ((1 << GET_HTLB_AREA(addr)) & (context).high_htlb_areas) || \
-	   ( ((addr) < 0x100000000L) && \
-	     ((1 << GET_ESID(addr)) & (context).low_htlb_areas) ) ) )
+	 ( ( (addr) >= 0x100000000UL) \
+	   ? ((1 << GET_HTLB_AREA(addr)) & (context).high_htlb_areas) \
+	   : ((1 << GET_ESID(addr)) & (context).low_htlb_areas) ) )
 
 #else /* !CONFIG_HUGETLB_PAGE */
 
@@ -171,4 +171,5 @@ extern unsigned int HPAGE_SHIFT;
 
 #include <asm-generic/page.h>
 
+#endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_PAGE_64_H */