merge linus into test branch

[pandora-kernel.git] / include / asm-powerpc / page_64.h

diff --git a/include/asm-powerpc/page_64.h b/include/asm-powerpc/page_64.h
index 58a3dd9..eab779c 100644 (file)
--- 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
@@ -103,27 +94,33 @@ 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)
 
 #define ARCH_HAS_HUGEPAGE_ONLY_RANGE
+#define ARCH_HAS_HUGETLB_FREE_PGD_RANGE
 #define ARCH_HAS_PREPARE_HUGEPAGE_RANGE
 #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)
@@ -175,4 +172,5 @@ extern unsigned int HPAGE_SHIFT;
 
 #include <asm-generic/page.h>
 
+#endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_PAGE_64_H */