On Wed, Oct 14, 2015 at 12:20:28PM +0100, Suzuki K. Poulose wrote: > At the moment, we only support maximum of 3-level page table for > swapper. With 48bit VA, 64K has only 3 levels and 4K uses section > mapping. Add support for 4-level page table for swapper, needed > by 16K pages. > > Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> > Cc: Mark Rutland <mark.rutl...@arm.com> > Cc: Catalin Marinas <catalin.mari...@arm.com> > Cc: Will Deacon <will.dea...@arm.com> > Signed-off-by: Suzuki K. Poulose <suzuki.poul...@arm.com> > Reviewed-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > Tested-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > --- > arch/arm64/kernel/head.S | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S > index 149fce3..7ace955 100644 > --- a/arch/arm64/kernel/head.S > +++ b/arch/arm64/kernel/head.S > @@ -271,7 +271,10 @@ ENDPROC(preserve_boot_args) > */ > .macro create_pgd_entry, tbl, virt, tmp1, tmp2 > create_table_entry \tbl, \virt, PGDIR_SHIFT, PTRS_PER_PGD, \tmp1, \tmp2 > -#if SWAPPER_PGTABLE_LEVELS == 3 > +#if SWAPPER_PGTABLE_LEVELS > 3 > + create_table_entry \tbl, \virt, PUD_SHIFT, PTRS_PER_PUD, \tmp1, \tmp2 > +#endif > +#if SWAPPER_PGTABLE_LEVELS > 2 > create_table_entry \tbl, \virt, SWAPPER_TABLE_SHIFT, PTRS_PER_PTE, > \tmp1, \tmp2 > #endif > .endm
Acked-by: Mark Rutland <mark.rutl...@arm.com> Thanks, Mark. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
