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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-12-13 14:34:43 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-12-13 14:34:43 +0000 |
| commit | ad1ae2fe7fe68414ef29eab3c87b48841f8b72f2 (patch) | |
| tree | f23fc22424f874c1295318904b273c08d00654ab /include/asm-arm/pgtable.h | |
| parent | f06b97ffd1ed7a96d5022d52f795fba8483afb75 (diff) | |
| download | blackbird-op-linux-ad1ae2fe7fe68414ef29eab3c87b48841f8b72f2.tar.gz blackbird-op-linux-ad1ae2fe7fe68414ef29eab3c87b48841f8b72f2.zip | |
[ARM] Unuse another Linux PTE bit
L_PTE_ASID is not really required to be stored in every PTE, since we
can identify it via the address passed to set_pte_at(). So, create
set_pte_ext() which takes the address of the PTE to set, the Linux
PTE value, and the additional CPU PTE bits which aren't encoded in
the Linux PTE value.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/pgtable.h')
| -rw-r--r-- | include/asm-arm/pgtable.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/include/asm-arm/pgtable.h b/include/asm-arm/pgtable.h index 88cd5c784ef0..b8cf2d5ec304 100644 --- a/include/asm-arm/pgtable.h +++ b/include/asm-arm/pgtable.h @@ -21,6 +21,7 @@ #include <asm/memory.h> #include <asm/arch/vmalloc.h> +#include <asm/pgtable-hwdef.h> /* * Just any arbitrary offset to the start of the vmalloc VM area: the @@ -170,7 +171,6 @@ extern void __pgd_error(const char *file, int line, unsigned long val); #define L_PTE_EXEC (1 << 6) #define L_PTE_DIRTY (1 << 7) #define L_PTE_SHARED (1 << 10) /* shared(v6), coherent(xsc3) */ -#define L_PTE_ASID (1 << 11) /* non-global (use ASID, v6) */ #ifndef __ASSEMBLY__ @@ -228,7 +228,7 @@ extern struct page *empty_zero_page; #define pfn_pte(pfn,prot) (__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))) #define pte_none(pte) (!pte_val(pte)) -#define pte_clear(mm,addr,ptep) set_pte_at((mm),(addr),(ptep), __pte(0)) +#define pte_clear(mm,addr,ptep) set_pte_ext(ptep, __pte(0), 0) #define pte_page(pte) (pfn_to_page(pte_pfn(pte))) #define pte_offset_kernel(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr)) #define pte_offset_map(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr)) @@ -236,8 +236,11 @@ extern struct page *empty_zero_page; #define pte_unmap(pte) do { } while (0) #define pte_unmap_nested(pte) do { } while (0) -#define set_pte(ptep, pte) cpu_set_pte(ptep,pte) -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext) + +#define set_pte_at(mm,addr,ptep,pteval) do { \ + set_pte_ext(ptep, pteval, (addr) >= PAGE_OFFSET ? 0 : PTE_EXT_NG); \ + } while (0) /* * The following only work if pte_present() is true. |
