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 /*