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authorDavid S. Miller <davem@davemloft.net>2012-05-12 12:52:47 -0700
committerDavid S. Miller <davem@davemloft.net>2012-05-12 12:52:47 -0700
commit6439d1c693bae2e7552ceaf16e45a6e819d18873 (patch)
tree3ccd1bfbef1794b6fd45a2e8181659105cc0c0fc /arch/sparc/include/asm/pgtable_32.h
parent3d8273675d4771d30e1e1c3dbae820dec55a0950 (diff)
sparc32: Un-btfixup PAGE_{NONE,COPY,READONLY,SHARED,KERNEL}.
That lets us also get rid of the run-time initialization of protection_map[] and all the ugly module workarounds for PAGE_KERNEL and PAGE_SHARED to deal with the fact that we can't do btfixups for modular code. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/pgtable_32.h')
-rw-r--r--arch/sparc/include/asm/pgtable_32.h62
1 files changed, 23 insertions, 39 deletions
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index 1c31ef180b1..c0e4d737afb 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -32,11 +32,6 @@ extern unsigned long calc_highpages(void);
#define pmd_ERROR(e) __builtin_trap()
#define pgd_ERROR(e) __builtin_trap()
-BTFIXUPDEF_INT(page_none)
-BTFIXUPDEF_INT(page_copy)
-BTFIXUPDEF_INT(page_readonly)
-BTFIXUPDEF_INT(page_kernel)
-
#define PMD_SHIFT 22
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
@@ -51,18 +46,11 @@ BTFIXUPDEF_INT(page_kernel)
#define FIRST_USER_ADDRESS 0
#define PTE_SIZE (PTRS_PER_PTE*4)
-#define PAGE_NONE __pgprot(BTFIXUP_INT(page_none))
-extern pgprot_t PAGE_SHARED;
-#define PAGE_COPY __pgprot(BTFIXUP_INT(page_copy))
-#define PAGE_READONLY __pgprot(BTFIXUP_INT(page_readonly))
-
-extern unsigned long page_kernel;
-
-#ifdef MODULE
-#define PAGE_KERNEL page_kernel
-#else
-#define PAGE_KERNEL __pgprot(BTFIXUP_INT(page_kernel))
-#endif
+#define PAGE_NONE SRMMU_PAGE_NONE
+#define PAGE_SHARED SRMMU_PAGE_SHARED
+#define PAGE_COPY SRMMU_PAGE_COPY
+#define PAGE_READONLY SRMMU_PAGE_RDONLY
+#define PAGE_KERNEL SRMMU_PAGE_KERNEL
/* Top-level page directory */
extern pgd_t swapper_pg_dir[1024];
@@ -71,28 +59,24 @@ extern void paging_init(void);
extern unsigned long ptr_in_current_pgd;
-/* Here is a trick, since mmap.c need the initializer elements for
- * protection_map[] to be constant at compile time, I set the following
- * to all zeros. I set it to the real values after I link in the
- * appropriate MMU page table routines at boot time.
- */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
+/* xwr */
+#define __P000 PAGE_NONE
+#define __P001 PAGE_READONLY
+#define __P010 PAGE_COPY
+#define __P011 PAGE_COPY
+#define __P100 PAGE_READONLY
+#define __P101 PAGE_READONLY
+#define __P110 PAGE_COPY
+#define __P111 PAGE_COPY
+
+#define __S000 PAGE_NONE
+#define __S001 PAGE_READONLY
+#define __S010 PAGE_SHARED
+#define __S011 PAGE_SHARED
+#define __S100 PAGE_READONLY
+#define __S101 PAGE_READONLY
+#define __S110 PAGE_SHARED
+#define __S111 PAGE_SHARED
extern int num_contexts;