diff options
Diffstat (limited to 'arch/powerpc/mm/book3s64/hash_hugetlbpage.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_hugetlbpage.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s64/hash_hugetlbpage.c b/arch/powerpc/mm/book3s64/hash_hugetlbpage.c index 2d4e02aa15a3..eefa89c6117b 100644 --- a/arch/powerpc/mm/book3s64/hash_hugetlbpage.c +++ b/arch/powerpc/mm/book3s64/hash_hugetlbpage.c @@ -15,6 +15,9 @@ #include <asm/cacheflush.h> #include <asm/machdep.h> +unsigned int hpage_shift; +EXPORT_SYMBOL(hpage_shift); + extern long hpte_insert_repeating(unsigned long hash, unsigned long vpn, unsigned long pa, unsigned long rlags, unsigned long vflags, int psize, int ssize); @@ -150,3 +153,16 @@ void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr old_pte, pte); set_huge_pte_at(vma->vm_mm, addr, ptep, pte); } + +void hugetlbpage_init_default(void) +{ + /* Set default large page size. Currently, we pick 16M or 1M + * depending on what is available + */ + if (mmu_psize_defs[MMU_PAGE_16M].shift) + hpage_shift = mmu_psize_defs[MMU_PAGE_16M].shift; + else if (mmu_psize_defs[MMU_PAGE_1M].shift) + hpage_shift = mmu_psize_defs[MMU_PAGE_1M].shift; + else if (mmu_psize_defs[MMU_PAGE_2M].shift) + hpage_shift = mmu_psize_defs[MMU_PAGE_2M].shift; +} |