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yaml
---
r: 80527
b: refs/heads/master
c: d1028a1
h: refs/heads/master
i:
  80525: 9793c36
  80523: 07faac0
  80519: 294c132
  80511: aa8bd81
v: v3
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Arjan van de Ven authored and Ingo Molnar committed Jan 30, 2008
1 parent 0f4c436 commit 6d71f35
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Showing 5 changed files with 15 additions and 41 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: f62d0f008e889915c93631c04d4c7d871f05bea7
refs/heads/master: d1028a154c65d7fadd1b2d0276c077014d401ec7
1 change: 0 additions & 1 deletion trunk/arch/x86/mm/Makefile_32
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,6 @@

obj-y := init_32.o pgtable_32.o fault_32.o ioremap.o extable.o pageattr.o mmap.o

obj-$(CONFIG_CPA_DEBUG) += pageattr-test.o
obj-$(CONFIG_NUMA) += discontig_32.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_HIGHMEM) += highmem_32.o
1 change: 0 additions & 1 deletion trunk/arch/x86/mm/Makefile_64
Original file line number Diff line number Diff line change
Expand Up @@ -7,4 +7,3 @@ obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_NUMA) += numa_64.o
obj-$(CONFIG_K8_NUMA) += k8topology_64.o
obj-$(CONFIG_ACPI_NUMA) += srat_64.o
obj-$(CONFIG_CPA_DEBUG) += pageattr-test.o
51 changes: 14 additions & 37 deletions trunk/arch/x86/mm/pageattr.c
Original file line number Diff line number Diff line change
Expand Up @@ -210,7 +210,8 @@ __change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot)
* Modules and drivers should use the set_memory_* APIs instead.
*/

int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
static int change_page_attr_addr(unsigned long address, int numpages,
pgprot_t prot)
{
int err = 0, kernel_map = 0, i;

Expand Down Expand Up @@ -251,36 +252,6 @@ int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
return err;
}

/**
* change_page_attr - Change page table attributes in the linear mapping.
* @page: First page to change
* @numpages: Number of pages to change
* @prot: New protection/caching type (PAGE_*)
*
* Returns 0 on success, otherwise a negated errno.
*
* This should be used when a page is mapped with a different caching policy
* than write-back somewhere - some CPUs do not like it when mappings with
* different caching policies exist. This changes the page attributes of the
* in kernel linear mapping too.
*
* Caller must call global_flush_tlb() later to make the changes active.
*
* The caller needs to ensure that there are no conflicting mappings elsewhere
* (e.g. in user space) * This function only deals with the kernel linear map.
*
* For MMIO areas without mem_map use change_page_attr_addr() instead.
*
* Modules and drivers should use the set_pages_* APIs instead.
*/
int change_page_attr(struct page *page, int numpages, pgprot_t prot)
{
unsigned long addr = (unsigned long)page_address(page);

return change_page_attr_addr(addr, numpages, prot);
}
EXPORT_UNUSED_SYMBOL(change_page_attr); /* to be removed in 2.6.27 */

/**
* change_page_attr_set - Change page table attributes in the linear mapping.
* @addr: Virtual address in linear mapping.
Expand All @@ -294,15 +265,14 @@ EXPORT_UNUSED_SYMBOL(change_page_attr); /* to be removed in 2.6.27 */
* different caching policies exist. This changes the page attributes of the
* in kernel linear mapping too.
*
* Caller must call global_flush_tlb() later to make the changes active.
*
* The caller needs to ensure that there are no conflicting mappings elsewhere
* (e.g. in user space) * This function only deals with the kernel linear map.
*
* This function is different from change_page_attr() in that only selected bits
* are impacted, all other bits remain as is.
*/
int change_page_attr_set(unsigned long addr, int numpages, pgprot_t prot)
static int change_page_attr_set(unsigned long addr, int numpages,
pgprot_t prot)
{
pgprot_t current_prot;
int level;
Expand Down Expand Up @@ -332,15 +302,14 @@ int change_page_attr_set(unsigned long addr, int numpages, pgprot_t prot)
* different caching policies exist. This changes the page attributes of the
* in kernel linear mapping too.
*
* Caller must call global_flush_tlb() later to make the changes active.
*
* The caller needs to ensure that there are no conflicting mappings elsewhere
* (e.g. in user space) * This function only deals with the kernel linear map.
*
* This function is different from change_page_attr() in that only selected bits
* are impacted, all other bits remain as is.
*/
int change_page_attr_clear(unsigned long addr, int numpages, pgprot_t prot)
static int change_page_attr_clear(unsigned long addr, int numpages,
pgprot_t prot)
{
pgprot_t current_prot;
int level;
Expand Down Expand Up @@ -549,3 +518,11 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
__flush_tlb_all();
}
#endif

/*
* The testcases use internal knowledge of the implementation that shouldn't
* be exposed to the rest of the kernel. Include these directly here.
*/
#ifdef CONFIG_CPA_DEBUG
#include "pageattr-test.c"
#endif
1 change: 0 additions & 1 deletion trunk/include/asm-x86/cacheflush.h
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,6 @@
void global_flush_tlb(void);
int __deprecated_for_modules change_page_attr(struct page *page, int numpages,
pgprot_t prot);
int change_page_attr_addr(unsigned long addr, int numpages, pgprot_t prot);

int set_pages_uc(struct page *page, int numpages);
int set_pages_wb(struct page *page, int numpages);
Expand Down

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