diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/include/asm/pte-hash32.h')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/include/asm/pte-hash32.h | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/include/asm/pte-hash32.h b/ANDROID_3.4.5/arch/powerpc/include/asm/pte-hash32.h deleted file mode 100644 index 4aad4132..00000000 --- a/ANDROID_3.4.5/arch/powerpc/include/asm/pte-hash32.h +++ /dev/null @@ -1,47 +0,0 @@ -#ifndef _ASM_POWERPC_PTE_HASH32_H -#define _ASM_POWERPC_PTE_HASH32_H -#ifdef __KERNEL__ - -/* - * The "classic" 32-bit implementation of the PowerPC MMU uses a hash - * table containing PTEs, together with a set of 16 segment registers, - * to define the virtual to physical address mapping. - * - * We use the hash table as an extended TLB, i.e. a cache of currently - * active mappings. We maintain a two-level page table tree, much - * like that used by the i386, for the sake of the Linux memory - * management code. Low-level assembler code in hash_low_32.S - * (procedure hash_page) is responsible for extracting ptes from the - * tree and putting them into the hash table when necessary, and - * updating the accessed and modified bits in the page table tree. - */ - -#define _PAGE_PRESENT 0x001 /* software: pte contains a translation */ -#define _PAGE_HASHPTE 0x002 /* hash_page has made an HPTE for this pte */ -#define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */ -#define _PAGE_USER 0x004 /* usermode access allowed */ -#define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */ -#define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */ -#define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */ -#define _PAGE_WRITETHRU 0x040 /* W: cache write-through */ -#define _PAGE_DIRTY 0x080 /* C: page changed */ -#define _PAGE_ACCESSED 0x100 /* R: page referenced */ -#define _PAGE_RW 0x400 /* software: user write access allowed */ -#define _PAGE_SPECIAL 0x800 /* software: Special page */ - -#ifdef CONFIG_PTE_64BIT -/* We never clear the high word of the pte */ -#define _PTE_NONE_MASK (0xffffffff00000000ULL | _PAGE_HASHPTE) -#else -#define _PTE_NONE_MASK _PAGE_HASHPTE -#endif - -#define _PMD_PRESENT 0 -#define _PMD_PRESENT_MASK (PAGE_MASK) -#define _PMD_BAD (~PAGE_MASK) - -/* Hash table based platforms need atomic updates of the linux PTE */ -#define PTE_ATOMIC_UPDATES 1 - -#endif /* __KERNEL__ */ -#endif /* _ASM_POWERPC_PTE_HASH32_H */ |