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Diffstat (limited to 'arch/sh/mm/init.c')
-rw-r--r--arch/sh/mm/init.c50
1 files changed, 28 insertions, 22 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index fe532aeaa16d..edc842ff61ed 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -106,27 +106,31 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
- int pgd_idx;
+ pte_t *pte;
+ int i, j, k;
unsigned long vaddr;
- vaddr = start & PMD_MASK;
- end = (end + PMD_SIZE - 1) & PMD_MASK;
- pgd_idx = pgd_index(vaddr);
- pgd = pgd_base + pgd_idx;
-
- for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) {
- BUG_ON(pgd_none(*pgd));
- pud = pud_offset(pgd, 0);
- BUG_ON(pud_none(*pud));
- pmd = pmd_offset(pud, 0);
-
- if (!pmd_present(*pmd)) {
- pte_t *pte_table;
- pte_table = (pte_t *)alloc_bootmem_low_pages(PAGE_SIZE);
- pmd_populate_kernel(&init_mm, pmd, pte_table);
+ vaddr = start;
+ i = __pgd_offset(vaddr);
+ j = __pud_offset(vaddr);
+ k = __pmd_offset(vaddr);
+ pgd = pgd_base + i;
+
+ for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
+ pud = (pud_t *)pgd;
+ for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
+ pmd = (pmd_t *)pud;
+ for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
+ if (pmd_none(*pmd)) {
+ pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+ pmd_populate_kernel(&init_mm, pmd, pte);
+ BUG_ON(pte != pte_offset_kernel(pmd, 0));
+ }
+ vaddr += PMD_SIZE;
+ }
+ k = 0;
}
-
- vaddr += PMD_SIZE;
+ j = 0;
}
}
#endif /* CONFIG_MMU */
@@ -137,7 +141,7 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
void __init paging_init(void)
{
unsigned long max_zone_pfns[MAX_NR_ZONES];
- unsigned long vaddr;
+ unsigned long vaddr, end;
int nid;
/* We don't need to map the kernel through the TLB, as
@@ -155,7 +159,8 @@ void __init paging_init(void)
* pte's will be filled in by __set_fixmap().
*/
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
- page_table_range_init(vaddr, 0, swapper_pg_dir);
+ end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
+ page_table_range_init(vaddr, end, swapper_pg_dir);
kmap_coherent_init();
@@ -210,6 +215,9 @@ void __init mem_init(void)
high_memory = node_high_memory;
}
+ /* Set this up early, so we can take care of the zero page */
+ cpu_cache_init();
+
/* clear the zero-page */
memset(empty_zero_page, 0, PAGE_SIZE);
__flush_wback_region(empty_zero_page, PAGE_SIZE);
@@ -230,8 +238,6 @@ void __init mem_init(void)
datasize >> 10,
initsize >> 10);
- p3_cache_init();
-
/* Initialize the vDSO */
vsyscall_init();
}