4 files changed, 27 insertions, 91 deletions

diff --git a/arch/microblaze/mm/consistent.c b/arch/microblaze/mm/consistent.c
index 5226b09cbbb..e10ad930895 100644
--- a/arch/microblaze/mm/consistent.c
+++ b/arch/microblaze/mm/consistent.c
@@ -117,7 +117,7 @@ void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle)
 	ret = (void *)va;
 
 	/* This gives us the real physical address of the first page. */
-	*dma_handle = pa = virt_to_bus((void *)vaddr);
+	*dma_handle = pa = __virt_to_phys(vaddr);
 #endif
 
 	/*
@@ -176,8 +176,7 @@ void consistent_free(size_t size, void *vaddr)
 	page = virt_to_page(vaddr);
 
 	do {
-		ClearPageReserved(page);
-		__free_page(page);
+		__free_reserved_page(page);
 		page++;
 	} while (size -= PAGE_SIZE);
 #else
@@ -194,9 +193,7 @@ void consistent_free(size_t size, void *vaddr)
 			pte_clear(&init_mm, (unsigned int)vaddr, ptep);
 			if (pfn_valid(pfn)) {
 				page = pfn_to_page(pfn);
-
-				ClearPageReserved(page);
-				__free_page(page);
+				__free_reserved_page(page);
 			}
 		}
 		vaddr += PAGE_SIZE;
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index 731f739d17a..fa4cf52aa7a 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -92,8 +92,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	int code = SEGV_MAPERR;
 	int is_write = error_code & ESR_S;
 	int fault;
-	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
-					 (is_write ? FAULT_FLAG_WRITE : 0);
+	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
 
 	regs->ear = address;
 	regs->esr = error_code;
@@ -121,6 +120,9 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 		die("Weird page fault", regs, SIGSEGV);
 	}
 
+	if (user_mode(regs))
+		flags |= FAULT_FLAG_USER;
+
 	/* When running in the kernel we expect faults to occur only to
 	 * addresses in user space.  All other faults represent errors in the
 	 * kernel and should generate an OOPS.  Unfortunately, in the case of an
@@ -199,6 +201,7 @@ good_area:
 	if (unlikely(is_write)) {
 		if (unlikely(!(vma->vm_flags & VM_WRITE)))
 			goto bad_area;
+		flags |= FAULT_FLAG_WRITE;
 	/* a read */
 	} else {
 		/* protection fault */
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 8f8b367c079..77bc7c7e652 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -71,28 +71,17 @@ static void __init highmem_init(void)
 	kmap_prot = PAGE_KERNEL;
 }
 
-static unsigned long highmem_setup(void)
+static void highmem_setup(void)
 {
 	unsigned long pfn;
-	unsigned long reservedpages = 0;
 
 	for (pfn = max_low_pfn; pfn < max_pfn; ++pfn) {
 		struct page *page = pfn_to_page(pfn);
 
 		/* FIXME not sure about */
-		if (memblock_is_reserved(pfn << PAGE_SHIFT))
-			continue;
-		ClearPageReserved(page);
-		init_page_count(page);
-		__free_page(page);
-		totalhigh_pages++;
-		reservedpages++;
+		if (!memblock_is_reserved(pfn << PAGE_SHIFT))
+			free_highmem_page(page);
 	}
-	totalram_pages += totalhigh_pages;
-	pr_info("High memory: %luk\n",
-					totalhigh_pages << (PAGE_SHIFT-10));
-
-	return reservedpages;
 }
 #endif /* CONFIG_HIGHMEM */
 
@@ -171,13 +160,12 @@ void __init setup_memory(void)
 	 * min_low_pfn - the first page (mm/bootmem.c - node_boot_start)
 	 * max_low_pfn
 	 * max_mapnr - the first unused page (mm/bootmem.c - node_low_pfn)
-	 * num_physpages - number of all pages
 	 */
 
 	/* memory start is from the kernel end (aligned) to higher addr */
 	min_low_pfn = memory_start >> PAGE_SHIFT; /* minimum for allocation */
 	/* RAM is assumed contiguous */
-	num_physpages = max_mapnr = memory_size >> PAGE_SHIFT;
+	max_mapnr = memory_size >> PAGE_SHIFT;
 	max_low_pfn = ((u64)memory_start + (u64)lowmem_size) >> PAGE_SHIFT;
 	max_pfn = ((u64)memory_start + (u64)memory_size) >> PAGE_SHIFT;
 
@@ -204,7 +192,8 @@ void __init setup_memory(void)
 		start_pfn = memblock_region_memory_base_pfn(reg);
 		end_pfn = memblock_region_memory_end_pfn(reg);
 		memblock_set_node(start_pfn << PAGE_SHIFT,
-					(end_pfn - start_pfn) << PAGE_SHIFT, 0);
+				  (end_pfn - start_pfn) << PAGE_SHIFT,
+				  &memblock.memory, 0);
 	}
 
 	/* free bootmem is whole main memory */
@@ -236,84 +225,29 @@ void __init setup_memory(void)
 	paging_init();
 }
 
-void free_init_pages(char *what, unsigned long begin, unsigned long end)
-{
-	unsigned long addr;
-
-	for (addr = begin; addr < end; addr += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(addr));
-		init_page_count(virt_to_page(addr));
-		free_page(addr);
-		totalram_pages++;
-	}
-	pr_info("Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
-}
-
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
-	int pages = 0;
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-		pages++;
-	}
-	pr_notice("Freeing initrd memory: %dk freed\n",
-					(int)(pages * (PAGE_SIZE / 1024)));
+	free_reserved_area((void *)start, (void *)end, -1, "initrd");
 }
 #endif
 
 void free_initmem(void)
 {
-	free_init_pages("unused kernel memory",
-			(unsigned long)(&__init_begin),
-			(unsigned long)(&__init_end));
+	free_initmem_default(-1);
 }
 
 void __init mem_init(void)
 {
-	pg_data_t *pgdat;
-	unsigned long reservedpages = 0, codesize, initsize, datasize, bsssize;
-
 	high_memory = (void *)__va(memory_start + lowmem_size - 1);
 
 	/* this will put all memory onto the freelists */
-	totalram_pages += free_all_bootmem();
-
-	for_each_online_pgdat(pgdat) {
-		unsigned long i;
-		struct page *page;
-
-		for (i = 0; i < pgdat->node_spanned_pages; i++) {
-			if (!pfn_valid(pgdat->node_start_pfn + i))
-				continue;
-			page = pgdat_page_nr(pgdat, i);
-			if (PageReserved(page))
-				reservedpages++;
-		}
-	}
-
+	free_all_bootmem();
 #ifdef CONFIG_HIGHMEM
-	reservedpages -= highmem_setup();
+	highmem_setup();
 #endif
 
-	codesize = (unsigned long)&_sdata - (unsigned long)&_stext;
-	datasize = (unsigned long)&_edata - (unsigned long)&_sdata;
-	initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin;
-	bsssize = (unsigned long)&__bss_stop - (unsigned long)&__bss_start;
-
-	pr_info("Memory: %luk/%luk available (%luk kernel code, ",
-		nr_free_pages() << (PAGE_SHIFT-10),
-		num_physpages << (PAGE_SHIFT-10),
-		codesize >> 10);
-	pr_cont("%luk reserved, %luk data, %luk bss, %luk init)\n",
-		reservedpages << (PAGE_SHIFT-10),
-		datasize >> 10,
-		bsssize >> 10,
-		initsize >> 10);
-
+	mem_init_print_info(NULL);
 #ifdef CONFIG_MMU
 	pr_info("Kernel virtual memory layout:\n");
 	pr_info("  * 0x%08lx..0x%08lx  : fixmap\n", FIXADDR_START, FIXADDR_TOP);
@@ -432,10 +366,11 @@ asmlinkage void __init mmu_init(void)
 
 #if defined(CONFIG_BLK_DEV_INITRD)
 	/* Remove the init RAM disk from the available memory. */
-/*	if (initrd_start) {
-		mem_pieces_remove(&phys_avail, __pa(initrd_start),
-				  initrd_end - initrd_start, 1);
-	}*/
+	if (initrd_start) {
+		unsigned long size;
+		size = initrd_end - initrd_start;
+		memblock_reserve(__virt_to_phys(initrd_start), size);
+	}
 #endif /* CONFIG_BLK_DEV_INITRD */
 
 	/* Initialize the MMU hardware */
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 10b3bd0a980..4f4520e779a 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -69,10 +69,11 @@ static void __iomem *__ioremap(phys_addr_t addr, unsigned long size,
 	 *
 	 * However, allow remap of rootfs: TBD
 	 */
+
 	if (mem_init_done &&
 		p >= memory_start && p < virt_to_phys(high_memory) &&
-		!(p >= virt_to_phys((unsigned long)&__bss_stop) &&
-		p < virt_to_phys((unsigned long)__bss_stop))) {
+		!(p >= __virt_to_phys((phys_addr_t)__bss_stop) &&
+		p < __virt_to_phys((phys_addr_t)__bss_stop))) {
 		pr_warn("__ioremap(): phys addr "PTE_FMT" is RAM lr %pf\n",
 			(unsigned long)p, __builtin_return_address(0));
 		return NULL;