diff options
Diffstat (limited to 'arch/powerpc/include/asm/page.h')
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 73b58ff6c451..96534b4e5a64 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -364,6 +364,20 @@ typedef struct { signed long pd; } hugepd_t; #ifdef CONFIG_HUGETLB_PAGE #ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64K_PAGES +/* + * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't + * need to setup hugepage directory for them. Our pte and page directory format + * enable us to have this enabled. But to avoid errors when implementing new + * features disable hugepd for 64K. We enable a debug version here, So we catch + * wrong usage. + */ +#ifdef CONFIG_DEBUG_VM +extern int hugepd_ok(hugepd_t hpd); +#else +#define hugepd_ok(x) (0) +#endif +#else static inline int hugepd_ok(hugepd_t hpd) { /* @@ -372,6 +386,7 @@ static inline int hugepd_ok(hugepd_t hpd) */ return (((hpd.pd & 0x3) == 0x0) && ((hpd.pd & HUGEPD_SHIFT_MASK) != 0)); } +#endif #else static inline int hugepd_ok(hugepd_t hpd) { |