5 files changed, 49 insertions, 46 deletions

diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index db2b1c5beff..8e4a8d1ac4a 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -51,7 +51,7 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
 	    !test_bit(PG_dcache_dirty, &page->flags)) {
 		void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
 		memcpy(vto, src, len);
-		kunmap_coherent();
+		kunmap_coherent(vto);
 	} else {
 		memcpy(dst, src, len);
 		if (boot_cpu_data.dcache.n_aliases)
@@ -70,7 +70,7 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
 	    !test_bit(PG_dcache_dirty, &page->flags)) {
 		void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
 		memcpy(dst, vfrom, len);
-		kunmap_coherent();
+		kunmap_coherent(vfrom);
 	} else {
 		memcpy(dst, src, len);
 		if (boot_cpu_data.dcache.n_aliases)
@@ -89,7 +89,7 @@ void copy_user_highpage(struct page *to, struct page *from,
 	    !test_bit(PG_dcache_dirty, &from->flags)) {
 		vfrom = kmap_coherent(from, vaddr);
 		copy_page(vto, vfrom);
-		kunmap_coherent();
+		kunmap_coherent(vfrom);
 	} else {
 		vfrom = kmap_atomic(from, KM_USER0);
 		copy_page(vto, vfrom);
@@ -150,7 +150,7 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr)
 
 			kaddr = kmap_coherent(page, vmaddr);
 			__flush_wback_region((void *)kaddr, PAGE_SIZE);
-			kunmap_coherent();
+			kunmap_coherent(kaddr);
 		} else
 			__flush_wback_region((void *)addr, PAGE_SIZE);
 	}
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index f1c93c880ed..781b413ff82 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -82,8 +82,8 @@ static noinline int vmalloc_fault(unsigned long address)
 	pmd_t *pmd_k;
 	pte_t *pte_k;
 
-	/* Make sure we are in vmalloc area: */
-	if (!(address >= VMALLOC_START && address < VMALLOC_END))
+	/* Make sure we are in vmalloc/module/P3 area: */
+	if (!(address >= VMALLOC_START && address < P3_ADDR_MAX))
 		return -1;
 
 	/*
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 0a9b4d855bc..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();
 
diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c
index 3eecf0d42f1..c52cd8c40a6 100644
--- a/arch/sh/mm/kmap.c
+++ b/arch/sh/mm/kmap.c
@@ -24,9 +24,6 @@ void __init kmap_coherent_init(void)
 {
 	unsigned long vaddr;
 
-	if (!boot_cpu_data.dcache.n_aliases)
-		return;
-
 	/* cache the first coherent kmap pte */
 	vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
 	kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
@@ -35,30 +32,31 @@ void __init kmap_coherent_init(void)
 void *kmap_coherent(struct page *page, unsigned long addr)
 {
 	enum fixed_addresses idx;
-	unsigned long vaddr, flags;
-	pte_t pte;
+	unsigned long vaddr;
 
 	BUG_ON(test_bit(PG_dcache_dirty, &page->flags));
 
-	inc_preempt_count();
-
-	idx = (addr & current_cpu_data.dcache.alias_mask) >> PAGE_SHIFT;
-	vaddr = __fix_to_virt(FIX_CMAP_END - idx);
-	pte = mk_pte(page, PAGE_KERNEL);
+	pagefault_disable();
 
-	local_irq_save(flags);
-	flush_tlb_one(get_asid(), vaddr);
-	local_irq_restore(flags);
+	idx = FIX_CMAP_END -
+		((addr & current_cpu_data.dcache.alias_mask) >> PAGE_SHIFT);
+	vaddr = __fix_to_virt(idx);
 
-	update_mmu_cache(NULL, vaddr, pte);
-
-	set_pte(kmap_coherent_pte - (FIX_CMAP_END - idx), pte);
+	BUG_ON(!pte_none(*(kmap_coherent_pte - idx)));
+	set_pte(kmap_coherent_pte - idx, mk_pte(page, PAGE_KERNEL));
 
 	return (void *)vaddr;
 }
 
-void kunmap_coherent(void)
+void kunmap_coherent(void *kvaddr)
 {
-	dec_preempt_count();
-	preempt_check_resched();
+	if (kvaddr >= (void *)FIXADDR_START) {
+		unsigned long vaddr = (unsigned long)kvaddr & PAGE_MASK;
+		enum fixed_addresses idx = __virt_to_fix(vaddr);
+
+		pte_clear(&init_mm, vaddr, kmap_coherent_pte - idx);
+		local_flush_tlb_one(get_asid(), vaddr);
+	}
+
+	pagefault_enable();
 }
diff --git a/arch/sh/mm/nommu.c b/arch/sh/mm/nommu.c
index 51b54037216..ac16c05917e 100644
--- a/arch/sh/mm/nommu.c
+++ b/arch/sh/mm/nommu.c
@@ -81,7 +81,7 @@ void *kmap_coherent(struct page *page, unsigned long addr)
 	return NULL;
 }
 
-void kunmap_coherent(void)
+void kunmap_coherent(void *kvaddr)
 {
 	BUG();
 }