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x86: convert CPA users to the new set_page_ API

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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>
This commit is contained in:
Arjan van de Ven 2008-01-30 13:34:06 +01:00 committed by Ingo Molnar
parent 75cbade8ea
commit 6d238cc4dc
8 changed files with 29 additions and 38 deletions
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8
arch/x86/kernel/efi.c
View File

@ -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();
}

3
arch/x86/kernel/pci-gart_64.c
View File

@ -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();

20
arch/x86/mm/init_32.c
View File

@ -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
}

10
arch/x86/mm/init_64.c
View File

@ -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
}

6
drivers/char/agp/intel-agp.c
View File

@ -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);

9
drivers/video/vermilion/vermilion.c
View File

@ -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();
/*

4
include/asm-x86/agp.h
View File

@ -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()
/*

7
sound/pci/intel8x0.c
View File

@ -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
/*