On Sun, 2017-02-19 at 15:48 +0530, Aneesh Kumar K.V wrote:
> +#ifdef CONFIG_PPC_BOOK3S_64
> + /*
> + * We need to make sure that for different page sizes reported by
> + * firmware we only add hugetlb support for page sizes that can be
> + * supported by linux page table layout.
> + * For now we have
> + * Radix: 2M
> + * Hash: 16M and 16G
> + */
> + if (radix_enabled()) {
> + if (mmu_psize != MMU_PAGE_2M)
> + return -EINVAL;
> + } else {
> + if (mmu_psize != MMU_PAGE_16M && mmu_psize != MMU_PAGE_16G)
> + return -EINVAL;
> + }
Hash could support others... Same with radix and PUD level pages.
Why do we need that ? Won't FW provide separate properties for hash and
radix page sizes anyway ?
Ben.
