diff options
Diffstat (limited to 'kernel/arch/powerpc/include/asm/pte-8xx.h')
| -rw-r--r-- | kernel/arch/powerpc/include/asm/pte-8xx.h | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/kernel/arch/powerpc/include/asm/pte-8xx.h b/kernel/arch/powerpc/include/asm/pte-8xx.h index 97bae64af..a0e2ba960 100644 --- a/kernel/arch/powerpc/include/asm/pte-8xx.h +++ b/kernel/arch/powerpc/include/asm/pte-8xx.h @@ -34,35 +34,32 @@ #define _PAGE_SPECIAL 0x0008 /* SW entry, forced to 0 by the TLB miss */ #define _PAGE_DIRTY 0x0100 /* C: page changed */ -/* These 4 software bits must be masked out when the entry is loaded - * into the TLB, 1 SW bit left(0x0080). +/* These 4 software bits must be masked out when the L2 entry is loaded + * into the TLB. */ -#define _PAGE_GUARDED 0x0010 /* software: guarded access */ -#define _PAGE_ACCESSED 0x0020 /* software: page referenced */ -#define _PAGE_WRITETHRU 0x0040 /* software: caching is write through */ +#define _PAGE_GUARDED 0x0010 /* Copied to L1 G entry in DTLB */ +#define _PAGE_USER 0x0020 /* Copied to L1 APG lsb */ +#define _PAGE_EXEC 0x0040 /* Copied to L1 APG */ +#define _PAGE_WRITETHRU 0x0080 /* software: caching is write through */ +#define _PAGE_ACCESSED 0x0800 /* software: page referenced */ -/* Setting any bits in the nibble with the follow two controls will - * require a TLB exception handler change. It is assumed unused bits - * are always zero. - */ -#define _PAGE_RO 0x0400 /* lsb PP bits */ -#define _PAGE_USER 0x0800 /* msb PP bits */ -/* set when _PAGE_USER is unset and _PAGE_RO is set */ -#define _PAGE_KNLRO 0x0200 +#define _PAGE_RO 0x0600 /* Supervisor RO, User no access */ #define _PMD_PRESENT 0x0001 #define _PMD_BAD 0x0ff0 #define _PMD_PAGE_MASK 0x000c #define _PMD_PAGE_8M 0x000c -#define _PTE_NONE_MASK _PAGE_KNLRO - /* Until my rework is finished, 8xx still needs atomic PTE updates */ #define PTE_ATOMIC_UPDATES 1 /* We need to add _PAGE_SHARED to kernel pages */ -#define _PAGE_KERNEL_RO (_PAGE_SHARED | _PAGE_RO | _PAGE_KNLRO) -#define _PAGE_KERNEL_ROX (_PAGE_EXEC | _PAGE_RO | _PAGE_KNLRO) +#define _PAGE_KERNEL_RO (_PAGE_SHARED | _PAGE_RO) +#define _PAGE_KERNEL_ROX (_PAGE_SHARED | _PAGE_RO | _PAGE_EXEC) +#define _PAGE_KERNEL_RW (_PAGE_SHARED | _PAGE_DIRTY | _PAGE_RW | \ + _PAGE_HWWRITE) +#define _PAGE_KERNEL_RWX (_PAGE_SHARED | _PAGE_DIRTY | _PAGE_RW | \ + _PAGE_HWWRITE | _PAGE_EXEC) #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_PTE_8xx_H */ |