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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-12-13 14:34:43 +0000 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-12-13 14:34:43 +0000 |
commit | ad1ae2fe7fe68414ef29eab3c87b48841f8b72f2 (patch) | |
tree | f23fc22424f874c1295318904b273c08d00654ab /include/asm-arm | |
parent | f06b97ffd1ed7a96d5022d52f795fba8483afb75 (diff) | |
download | linux-stable-ad1ae2fe7fe68414ef29eab3c87b48841f8b72f2.tar.gz linux-stable-ad1ae2fe7fe68414ef29eab3c87b48841f8b72f2.tar.bz2 linux-stable-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')
-rw-r--r-- | include/asm-arm/cpu-multi32.h | 7 | ||||
-rw-r--r-- | include/asm-arm/cpu-single.h | 4 | ||||
-rw-r--r-- | include/asm-arm/pgtable.h | 11 |
3 files changed, 13 insertions, 9 deletions
diff --git a/include/asm-arm/cpu-multi32.h b/include/asm-arm/cpu-multi32.h index 4679f63688e9..715e18a4add1 100644 --- a/include/asm-arm/cpu-multi32.h +++ b/include/asm-arm/cpu-multi32.h @@ -50,9 +50,10 @@ extern struct processor { */ void (*switch_mm)(unsigned long pgd_phys, struct mm_struct *mm); /* - * Set a PTE + * Set a possibly extended PTE. Non-extended PTEs should + * ignore 'ext'. */ - void (*set_pte)(pte_t *ptep, pte_t pte); + void (*set_pte_ext)(pte_t *ptep, pte_t pte, unsigned int ext); } processor; #define cpu_proc_init() processor._proc_init() @@ -60,5 +61,5 @@ extern struct processor { #define cpu_reset(addr) processor.reset(addr) #define cpu_do_idle() processor._do_idle() #define cpu_dcache_clean_area(addr,sz) processor.dcache_clean_area(addr,sz) -#define cpu_set_pte(ptep, pte) processor.set_pte(ptep, pte) +#define cpu_set_pte_ext(ptep,pte,ext) processor.set_pte_ext(ptep,pte,ext) #define cpu_do_switch_mm(pgd,mm) processor.switch_mm(pgd,mm) diff --git a/include/asm-arm/cpu-single.h b/include/asm-arm/cpu-single.h index 6723e67244fa..0b120ee36091 100644 --- a/include/asm-arm/cpu-single.h +++ b/include/asm-arm/cpu-single.h @@ -28,7 +28,7 @@ #define cpu_do_idle __cpu_fn(CPU_NAME,_do_idle) #define cpu_dcache_clean_area __cpu_fn(CPU_NAME,_dcache_clean_area) #define cpu_do_switch_mm __cpu_fn(CPU_NAME,_switch_mm) -#define cpu_set_pte __cpu_fn(CPU_NAME,_set_pte) +#define cpu_set_pte_ext __cpu_fn(CPU_NAME,_set_pte_ext) #include <asm/page.h> @@ -40,5 +40,5 @@ extern void cpu_proc_fin(void); extern int cpu_do_idle(void); extern void cpu_dcache_clean_area(void *, int); extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm); -extern void cpu_set_pte(pte_t *ptep, pte_t pte); +extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); extern void cpu_reset(unsigned long addr) __attribute__((noreturn)); 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. |