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
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -396,10 +396,10 @@
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
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -570,8 +570,7 @@
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
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -770,34 +770,30 @@
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 @@
#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
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -556,8 +556,6 @@
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 @@
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 @@
#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
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -210,8 +210,8 @@
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 @@
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
--- a/drivers/video/vermilion/vermilion.c
+++ b/drivers/video/vermilion/vermilion.c
@@ -88,9 +88,7 @@
{
gfp_t flags;
unsigned long i;
- pgprot_t wc_pageprot;
- wc_pageprot = PAGE_KERNEL_NOCACHE;
max_order++;
do {
/*
@@ -131,8 +129,7 @@
*/
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 @@
* 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
--- 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
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -711,11 +711,14 @@
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
/*
