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>

diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index 57b5777..a70fe77 100644 (file)
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -396,10 +396,10 @@ static void __init runtime_code_page_mkexec(void)
                md = p;
                end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
                if (md->type == EFI_RUNTIME_SERVICES_CODE &&
-                   (end >> PAGE_SHIFT) <= max_pfn_mapped)
-                       change_page_attr_addr(md->virt_addr,
-                                             md->num_pages,
-                                             PAGE_KERNEL_EXEC_NOCACHE);
+                   (end >> PAGE_SHIFT) <= max_pfn_mapped) {
+                       set_memory_x(md->virt_addr, md->num_pages);
+                       set_memory_uc(md->virt_addr, md->num_pages);
+               }
        }
        __flush_tlb_all();
 }

diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 04ca5c5..8860c6e 100644 (file)
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -570,8 +570,7 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
        gatt = (void *)__get_free_pages(GFP_KERNEL, get_order(gatt_size));
        if (!gatt)
                panic("Cannot allocate GATT table");
-       if (change_page_attr_addr((unsigned long)gatt, gatt_size >> PAGE_SHIFT,
-                                 PAGE_KERNEL_NOCACHE))
+       if (set_memory_uc((unsigned long)gatt, gatt_size >> PAGE_SHIFT))
                panic("Could not set GART PTEs to uncacheable pages");
        global_flush_tlb();
 

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 016c8cc..7c9bb30 100644 (file)
--- 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 c250580..05bb12d 100644 (file)
--- 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
 }

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 03eac1e..c03a714 100644 (file)
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -210,8 +210,8 @@ static void *i8xx_alloc_pages(void)
        if (page == NULL)
                return NULL;
 
-       if (change_page_attr(page, 4, PAGE_KERNEL_NOCACHE) < 0) {
-               change_page_attr(page, 4, PAGE_KERNEL);
+       if (set_pages_uc(page, 4) < 0) {
+               set_pages_wb(page, 4);
                global_flush_tlb();
                __free_pages(page, 2);
                return NULL;
@@ -230,7 +230,7 @@ static void i8xx_destroy_pages(void *addr)
                return;
 
        page = virt_to_page(addr);
-       change_page_attr(page, 4, PAGE_KERNEL);
+       set_pages_wb(page, 4);
        global_flush_tlb();
        put_page(page);
        __free_pages(page, 2);

diff --git a/drivers/video/vermilion/vermilion.c b/drivers/video/vermilion/vermilion.c
index c31f549..fb72778 100644 (file)
--- a/drivers/video/vermilion/vermilion.c
+++ b/drivers/video/vermilion/vermilion.c
@@ -88,9 +88,7 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
 {
        gfp_t flags;
        unsigned long i;
-       pgprot_t wc_pageprot;
 
-       wc_pageprot = PAGE_KERNEL_NOCACHE;
        max_order++;
        do {
                /*
@@ -131,8 +129,7 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order,
         */
 
        global_flush_tlb();
-       change_page_attr(virt_to_page(va->logical), va->size >> PAGE_SHIFT,
-                        wc_pageprot);
+       set_pages_uc(virt_to_page(va->logical), va->size >> PAGE_SHIFT);
        global_flush_tlb();
 
        printk(KERN_DEBUG MODULE_NAME
@@ -157,8 +154,8 @@ static void vmlfb_free_vram_area(struct vram_area *va)
                 * Reset the linear kernel map caching policy.
                 */
 
-               change_page_attr(virt_to_page(va->logical),
-                                va->size >> PAGE_SHIFT, PAGE_KERNEL);
+               set_pages_wb(virt_to_page(va->logical),
+                                va->size >> PAGE_SHIFT);
                global_flush_tlb();
 
                /*

diff --git a/include/asm-x86/agp.h b/include/asm-x86/agp.h
index 62df2a9..f6df725 100644 (file)
--- a/include/asm-x86/agp.h
+++ b/include/asm-x86/agp.h
@@ -16,8 +16,8 @@
  * Caller's responsibility to call global_flush_tlb() for performance
  * reasons
  */
-#define map_page_into_agp(page) change_page_attr(page, 1, PAGE_KERNEL_NOCACHE)
-#define unmap_page_from_agp(page) change_page_attr(page, 1, PAGE_KERNEL)
+#define map_page_into_agp(page) set_pages_uc(page, 1)
+#define unmap_page_from_agp(page) set_pages_wb(page, 1)
 #define flush_agp_mappings() global_flush_tlb()
 
 /*

diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index b4a38a3..e565090 100644 (file)
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -711,11 +711,14 @@ static void snd_intel8x0_setup_periods(struct intel8x0 *chip, struct ichdev *ich
 static void fill_nocache(void *buf, int size, int nocache)
 {
        size = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
-       change_page_attr(virt_to_page(buf), size, nocache ? PAGE_KERNEL_NOCACHE : PAGE_KERNEL);
+       if (nocache)
+               set_pages_uc(virt_to_page(buf), size);
+       else
+               set_pages_wb(virt_to_page(buf), size);
        global_flush_tlb();
 }
 #else
-#define fill_nocache(buf,size,nocache)
+#define fill_nocache(buf, size, nocache) do { ; } while (0)
 #endif
 
 /*