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Pull rework-memory-attribute-aliasing into release branch

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This commit is contained in:
Tony Luck 2006-06-21 14:50:10 -07:00
commit 1323523f50
7 changed files with 359 additions and 73 deletions
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1
include/asm-ia64/io.h
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@ -88,6 +88,7 @@ phys_to_virt (unsigned long address)
}
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
extern u64 kern_mem_attribute (unsigned long phys_addr, unsigned long size);
extern int valid_phys_addr_range (unsigned long addr, size_t count); /* efi.c */
extern int valid_mmap_phys_addr_range (unsigned long addr, size_t count);

22
include/asm-ia64/pgtable.h
View file

@ -316,22 +316,20 @@ ia64_phys_addr_valid (unsigned long addr)
#define pte_mkhuge(pte) (__pte(pte_val(pte)))
/*
* Macro to a page protection value as "uncacheable". Note that "protection" is really a
* misnomer here as the protection value contains the memory attribute bits, dirty bits,
* and various other bits as well.
* Make page protection values cacheable, uncacheable, or write-
* combining. Note that "protection" is really a misnomer here as the
* protection value contains the memory attribute bits, dirty bits, and
* various other bits as well.
*/
#define pgprot_cacheable(prot) __pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_WB)
#define pgprot_noncached(prot) __pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_UC)
/*
* Macro to make mark a page protection value as "write-combining".
* Note that "protection" is really a misnomer here as the protection
* value contains the memory attribute bits, dirty bits, and various
* other bits as well. Accesses through a write-combining translation
* works bypasses the caches, but does allow for consecutive writes to
* be combined into single (but larger) write transactions.
*/
#define pgprot_writecombine(prot) __pgprot((pgprot_val(prot) & ~_PAGE_MA_MASK) | _PAGE_MA_WC)
struct file;
extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot);
#define __HAVE_PHYS_MEM_ACCESS_PROT
static inline unsigned long
pgd_index (unsigned long address)
{