diff options
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/pgtable-ppc32.h | 11 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/pte-8xx.h | 9 |
2 files changed, 9 insertions, 11 deletions
diff --git a/arch/powerpc/include/asm/pgtable-ppc32.h b/arch/powerpc/include/asm/pgtable-ppc32.h index 62a3e49..9cde3c1 100644 --- a/arch/powerpc/include/asm/pgtable-ppc32.h +++ b/arch/powerpc/include/asm/pgtable-ppc32.h @@ -178,12 +178,11 @@ static inline unsigned long pte_update(pte_t *p, andc %1,%0,%5\n\ or %1,%1,%6\n\ /* 0x200 == Extended encoding, bit 22 */ \ - /* Bit 22 has to be 1 if neither _PAGE_USER nor _PAGE_RW are set */ \ - rlwimi %1,%1,32-2,0x200\n /* get _PAGE_USER */ \ - rlwinm %3,%1,32-1,0x200\n /* get _PAGE_RW */ \ - or %1,%3,%1\n\ - xori %1,%1,0x200\n" -" stwcx. %1,0,%4\n\ + /* Bit 22 has to be 1 when _PAGE_USER is unset and _PAGE_RO is set */ \ + rlwimi %1,%1,32-1,0x200\n /* get _PAGE_RO */ \ + rlwinm %3,%1,32-2,0x200\n /* get _PAGE_USER */ \ + andc %1,%1,%3\n\ + stwcx. %1,0,%4\n\ bne- 1b" : "=&r" (old), "=&r" (tmp), "=m" (*p), "=&r" (tmp2) : "r" (p), "r" (clr), "r" (set), "m" (*p) diff --git a/arch/powerpc/include/asm/pte-8xx.h b/arch/powerpc/include/asm/pte-8xx.h index daa4616..eb6edb4 100644 --- a/arch/powerpc/include/asm/pte-8xx.h +++ b/arch/powerpc/include/asm/pte-8xx.h @@ -46,9 +46,9 @@ * require a TLB exception handler change. It is assumed unused bits * are always zero. */ -#define _PAGE_RW 0x0400 /* lsb PP bits, inverted in HW */ +#define _PAGE_RO 0x0400 /* lsb PP bits */ #define _PAGE_USER 0x0800 /* msb PP bits */ -/* set when neither _PAGE_USER nor _PAGE_RW are set */ +/* set when _PAGE_USER is unset and _PAGE_RO is set */ #define _PAGE_KNLRO 0x0200 #define _PMD_PRESENT 0x0001 @@ -62,9 +62,8 @@ #define PTE_ATOMIC_UPDATES 1 /* We need to add _PAGE_SHARED to kernel pages */ -#define _PAGE_KERNEL_RO (_PAGE_SHARED | _PAGE_KNLRO) -#define _PAGE_KERNEL_ROX (_PAGE_EXEC | _PAGE_KNLRO) -#define _PAGE_KERNEL_RW (_PAGE_DIRTY | _PAGE_RW | _PAGE_HWWRITE) +#define _PAGE_KERNEL_RO (_PAGE_SHARED | _PAGE_RO | _PAGE_KNLRO) +#define _PAGE_KERNEL_ROX (_PAGE_EXEC | _PAGE_RO | _PAGE_KNLRO) #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_PTE_8xx_H */ |
