diff options
Diffstat (limited to 'arch/powerpc/mm/gup.c')
| -rw-r--r-- | arch/powerpc/mm/gup.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/powerpc/mm/gup.c b/arch/powerpc/mm/gup.c index 28a114db3ba..bc400c78c97 100644 --- a/arch/powerpc/mm/gup.c +++ b/arch/powerpc/mm/gup.c @@ -14,6 +14,8 @@ #include <linux/rwsem.h> #include <asm/pgtable.h> +#ifdef __HAVE_ARCH_PTE_SPECIAL + /* * The performance critical leaf functions are made noinline otherwise gcc * inlines everything into a single function which results in too much @@ -151,8 +153,11 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, unsigned long addr, len, end; unsigned long next; pgd_t *pgdp; - int psize, nr = 0; + int nr = 0; +#ifdef CONFIG_PPC64 unsigned int shift; + int psize; +#endif pr_debug("%s(%lx,%x,%s)\n", __func__, start, nr_pages, write ? "write" : "read"); @@ -205,8 +210,13 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, */ local_irq_disable(); +#ifdef CONFIG_PPC64 + /* Those bits are related to hugetlbfs implementation and only exist + * on 64-bit for now + */ psize = get_slice_psize(mm, addr); shift = mmu_psize_defs[psize].shift; +#endif /* CONFIG_PPC64 */ #ifdef CONFIG_HUGETLB_PAGE if (unlikely(mmu_huge_psizes[psize])) { @@ -236,7 +246,9 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, do { pgd_t pgd = *pgdp; +#ifdef CONFIG_PPC64 VM_BUG_ON(shift != mmu_psize_defs[get_slice_psize(mm, addr)].shift); +#endif pr_debug(" %016lx: normal pgd %p\n", addr, (void *)pgd_val(pgd)); next = pgd_addr_end(addr, end); @@ -279,3 +291,5 @@ slow_irqon: return ret; } } + +#endif /* __HAVE_ARCH_PTE_SPECIAL */ |