fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / arch / ppc / mm / pgtable.c

diff --git a/arch/ppc/mm/pgtable.c b/arch/ppc/mm/pgtable.c
index b5316b4..354a940 100644 (file)
--- a/arch/ppc/mm/pgtable.c
+++ b/arch/ppc/mm/pgtable.c
@@ -20,7 +20,6 @@
  *
  */
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/types.h>
@@ -39,7 +38,7 @@ unsigned long ioremap_base;
 unsigned long ioremap_bot;
 int io_bat_index;
 
-#if defined(CONFIG_6xx) || defined(CONFIG_POWER3)
+#if defined(CONFIG_6xx)
 #define HAVE_BATS      1
 #endif
 
@@ -66,7 +65,6 @@ void setbat(int index, unsigned long virt, unsigned long phys,
 
 #ifdef HAVE_TLBCAM
 extern unsigned int tlbcam_index;
-extern unsigned int num_tlbcam_entries;
 extern unsigned long v_mapped_by_tlbcam(unsigned long va);
 extern unsigned long p_mapped_by_tlbcam(unsigned long pa);
 #else /* !HAVE_TLBCAM */
@@ -74,7 +72,7 @@ extern unsigned long p_mapped_by_tlbcam(unsigned long pa);
 #define p_mapped_by_tlbcam(x)  (0UL)
 #endif /* HAVE_TLBCAM */
 
-#ifdef CONFIG_44x
+#ifdef CONFIG_PTE_64BIT
 /* 44x uses an 8kB pgdir because it has 8-byte Linux PTEs. */
 #define PGDIR_ORDER    1
 #else
@@ -102,11 +100,6 @@ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 
        if (mem_init_done) {
                pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
-               if (pte) {
-                       struct page *ptepage = virt_to_page(pte);
-                       ptepage->mapping = (void *) mm;
-                       ptepage->index = address & PMD_MASK;
-               }
        } else {
                pte = (pte_t *)early_get_page();
                if (pte)
@@ -120,17 +113,14 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
        struct page *ptepage;
 
 #ifdef CONFIG_HIGHPTE
-       int flags = GFP_KERNEL | __GFP_HIGHMEM | __GFP_REPEAT;
+       gfp_t flags = GFP_KERNEL | __GFP_HIGHMEM | __GFP_REPEAT;
 #else
-       int flags = GFP_KERNEL | __GFP_REPEAT;
+       gfp_t flags = GFP_KERNEL | __GFP_REPEAT;
 #endif
 
        ptepage = alloc_pages(flags, 0);
-       if (ptepage) {
-               ptepage->mapping = (void *) mm;
-               ptepage->index = address & PMD_MASK;
+       if (ptepage)
                clear_highpage(ptepage);
-       }
        return ptepage;
 }
 
@@ -139,7 +129,6 @@ void pte_free_kernel(pte_t *pte)
 #ifdef CONFIG_SMP
        hash_page_sync();
 #endif
-       virt_to_page(pte)->mapping = NULL;
        free_page((unsigned long)pte);
 }
 
@@ -148,17 +137,16 @@ void pte_free(struct page *ptepage)
 #ifdef CONFIG_SMP
        hash_page_sync();
 #endif
-       ptepage->mapping = NULL;
        __free_page(ptepage);
 }
 
-#ifndef CONFIG_44x
+#ifndef CONFIG_PHYS_64BIT
 void __iomem *
 ioremap(phys_addr_t addr, unsigned long size)
 {
        return __ioremap(addr, size, _PAGE_NO_CACHE);
 }
-#else /* CONFIG_44x */
+#else /* CONFIG_PHYS_64BIT */
 void __iomem *
 ioremap64(unsigned long long addr, unsigned long size)
 {
@@ -172,7 +160,7 @@ ioremap(phys_addr_t addr, unsigned long size)
 
        return ioremap64(addr64, size);
 }
-#endif /* CONFIG_44x */
+#endif /* CONFIG_PHYS_64BIT */
 
 void __iomem *
 __ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
@@ -203,7 +191,7 @@ __ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
         */
        if ( mem_init_done && (p < virt_to_phys(high_memory)) )
        {
-               printk("__ioremap(): phys addr "PTE_FMT" is RAM lr %p\n", p,
+               printk("__ioremap(): phys addr "PHYS_FMT" is RAM lr %p\n", p,
                       __builtin_return_address(0));
                return NULL;
        }
@@ -291,18 +279,16 @@ map_page(unsigned long va, phys_addr_t pa, int flags)
        pte_t *pg;
        int err = -ENOMEM;
 
-       spin_lock(&init_mm.page_table_lock);
        /* Use upper 10 bits of VA to index the first level map */
        pd = pmd_offset(pgd_offset_k(va), va);
        /* Use middle 10 bits of VA to index the second-level map */
-       pg = pte_alloc_kernel(&init_mm, pd, va);
+       pg = pte_alloc_kernel(pd, va);
        if (pg != 0) {
                err = 0;
-               set_pte(pg, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags)));
+               set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags)));
                if (mem_init_done)
                        flush_HPTE(0, va, pmd_val(*pd));
        }
-       spin_unlock(&init_mm.page_table_lock);
        return err;
 }
 
@@ -381,7 +367,7 @@ void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
  * the PTE pointer is unmodified if PTE is not found.
  */
 int
-get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep)
+get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep, pmd_t **pmdp)
 {
         pgd_t  *pgd;
         pmd_t  *pmd;
@@ -396,6 +382,8 @@ get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep)
                         if (pte) {
                                retval = 1;
                                *ptep = pte;
+                               if (pmdp)
+                                       *pmdp = pmd;
                                /* XXX caller needs to do pte_unmap, yuck */
                         }
                 }
@@ -433,7 +421,7 @@ unsigned long iopa(unsigned long addr)
                mm = &init_mm;
 
        pa = 0;
-       if (get_pteptr(mm, addr, &pte)) {
+       if (get_pteptr(mm, addr, &pte, NULL)) {
                pa = (pte_val(*pte) & PAGE_MASK) | (addr & ~PAGE_MASK);
                pte_unmap(pte);
        }