Merge branch 'linus' into x86/urgent

Merge reason: Bring in changes that the next patch will depend on.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 28 insertions, 22 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index fe532aeaa16..edc842ff61e 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();
 }