x86: convert CPA users to the new set_page_ API

This patch converts various users of change_page_attr() to the new,
more intent driven set_page_*/set_memory_* API set.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 11 insertions, 19 deletions

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 016c8ccd1d8d..7c9bb3076b8a 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -770,34 +770,30 @@ void mark_rodata_ro(void)
 	if (num_possible_cpus() <= 1)
 #endif
 	{
-		change_page_attr(virt_to_page(start),
-		                 size >> PAGE_SHIFT, PAGE_KERNEL_RX);
+		set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
 		printk("Write protecting the kernel text: %luk\n", size >> 10);
 
 #ifdef CONFIG_CPA_DEBUG
 		global_flush_tlb();
 
 		printk("Testing CPA: Reverting %lx-%lx\n", start, start+size);
-		change_page_attr(virt_to_page(start), size>>PAGE_SHIFT,
-				 PAGE_KERNEL_EXEC);
+		set_pages_rw(virt_to_page(start), size>>PAGE_SHIFT);
 		global_flush_tlb();
 
 		printk("Testing CPA: write protecting again\n");
-		change_page_attr(virt_to_page(start), size>>PAGE_SHIFT,
-				PAGE_KERNEL_RX);
+		set_pages_ro(virt_to_page(start), size>>PAGE_SHIFT);
 		global_flush_tlb();
 #endif
 	}
 #endif
 	start += size;
 	size = (unsigned long)__end_rodata - start;
-	change_page_attr(virt_to_page(start),
-	                 size >> PAGE_SHIFT, PAGE_KERNEL_RO);
+	set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
 	printk("Write protecting the kernel read-only data: %luk\n",
 	       size >> 10);
 
 	/*
-	 * change_page_attr() requires a global_flush_tlb() call after it.
+	 * set_pages_*() requires a global_flush_tlb() call after it.
 	 * We do this after the printk so that if something went wrong in the
 	 * change, the printk gets out at least to give a better debug hint
 	 * of who is the culprit.
@@ -806,13 +802,11 @@ void mark_rodata_ro(void)
 
 #ifdef CONFIG_CPA_DEBUG
 	printk("Testing CPA: undo %lx-%lx\n", start, start + size);
-	change_page_attr(virt_to_page(start), size >> PAGE_SHIFT,
-				PAGE_KERNEL);
+	set_pages_rw(virt_to_page(start), size >> PAGE_SHIFT);
 	global_flush_tlb();
 
 	printk("Testing CPA: write protecting again\n");
-	change_page_attr(virt_to_page(start), size >> PAGE_SHIFT,
-				PAGE_KERNEL_RO);
+	set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
 	global_flush_tlb();
 #endif
 }
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index c250580a9432..05bb12db0b09 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -556,8 +556,6 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 		init_page_count(virt_to_page(addr));
 		memset((void *)(addr & ~(PAGE_SIZE-1)),
 			POISON_FREE_INITMEM, PAGE_SIZE);
-		if (addr >= __START_KERNEL_map)
-			change_page_attr_addr(addr, 1, __pgprot(0));
 		free_page(addr);
 		totalram_pages++;
 	}
@@ -594,13 +592,13 @@ void mark_rodata_ro(void)
 	if (end <= start)
 		return;
 
-	change_page_attr_addr(start, (end - start) >> PAGE_SHIFT, PAGE_KERNEL_RO);
+	set_memory_ro(start, (end - start) >> PAGE_SHIFT);
 
 	printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n",
 	       (end - start) >> 10);
 
 	/*
-	 * change_page_attr_addr() requires a global_flush_tlb() call after it.
+	 * set_memory_*() requires a global_flush_tlb() call after it.
 	 * We do this after the printk so that if something went wrong in the
 	 * change, the printk gets out at least to give a better debug hint
 	 * of who is the culprit.
@@ -609,11 +607,11 @@ void mark_rodata_ro(void)
 
 #ifdef CONFIG_CPA_DEBUG
 	printk("Testing CPA: undo %lx-%lx\n", start, end);
-	change_page_attr_addr(start, (end - start) >> PAGE_SHIFT, PAGE_KERNEL);
+	set_memory_rw(start, (end-start) >> PAGE_SHIFT);
 	global_flush_tlb();
 
 	printk("Testing CPA: again\n");
-	change_page_attr_addr(start, (end - start) >> PAGE_SHIFT, PAGE_KERNEL_RO);
+	set_memory_ro(start, (end-start) >> PAGE_SHIFT);
 	global_flush_tlb();
 #endif
 }