From 6d238cc4dc8a36a3915c26202fe49f58a0683fb9 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Wed, 30 Jan 2008 13:34:06 +0100 Subject: [PATCH] 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 Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/kernel/efi.c | 8 ++++---- arch/x86/kernel/pci-gart_64.c | 3 +-- arch/x86/mm/init_32.c | 20 +++++++------------- arch/x86/mm/init_64.c | 10 ++++------ drivers/char/agp/intel-agp.c | 6 +++--- drivers/video/vermilion/vermilion.c | 9 +++------ include/asm-x86/agp.h | 4 ++-- sound/pci/intel8x0.c | 7 +++++-- 8 files changed, 29 insertions(+), 38 deletions(-) diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c index 57b57778bf..a70fe77354 100644 --- 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 04ca5c5221..8860c6eba8 100644 --- 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 016c8ccd1d..7c9bb3076b 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 c250580a94..05bb12db0b 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 } diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index 03eac1eb8e..c03a714392 100644 --- 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 c31f549ebe..fb72778dee 100644 --- 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 62df2a9e71..f6df725618 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 b4a38a3d85..e565090529 100644 --- 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 /* -- 2.39.5