From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f44.google.com (mail-pa0-f44.google.com [209.85.220.44]) by kanga.kvack.org (Postfix) with ESMTP id 30A966B0073 for ; Fri, 30 Jan 2015 09:54:34 -0500 (EST) Received: by mail-pa0-f44.google.com with SMTP id rd3so53144856pab.3 for ; Fri, 30 Jan 2015 06:54:33 -0800 (PST) Received: from mga01.intel.com (mga01.intel.com. [192.55.52.88]) by mx.google.com with ESMTP id fl9si8789278pad.109.2015.01.30.06.54.33 for ; Fri, 30 Jan 2015 06:54:33 -0800 (PST) From: "Kirill A. Shutemov" Subject: [PATCHv2 12/19] s390: expose number of page table levels Date: Fri, 30 Jan 2015 16:54:24 +0200 Message-Id: <1422629664-19954-1-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <20150130154830.6e5c4774@mschwide> References: <20150130154830.6e5c4774@mschwide> Sender: owner-linux-mm@kvack.org List-ID: To: Martin Schwidefsky , Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Guenter Roeck , "Kirill A. Shutemov" , Heiko Carstens We would want to use number of page table level to define mm_struct. Let's expose it as CONFIG_PGTABLE_LEVELS. Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page table levels folded. Signed-off-by: Kirill A. Shutemov Cc: Martin Schwidefsky Cc: Heiko Carstens --- v2: fix typo --- arch/s390/Kconfig | 5 +++++ arch/s390/include/asm/pgtable.h | 2 ++ 2 files changed, 7 insertions(+) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 8d11babf9aa5..6870e6ab903f 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -155,6 +155,11 @@ config S390 config SCHED_OMIT_FRAME_POINTER def_bool y +config PGTABLE_LEVELS + int + default 4 if 64BIT + default 2 + source "init/Kconfig" source "kernel/Kconfig.freezer" diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index fbb5ee3ae57c..e08ec38f8c6e 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -91,7 +91,9 @@ extern unsigned long zero_page_mask; */ #define PTRS_PER_PTE 256 #ifndef CONFIG_64BIT +#define __PAGETABLE_PUD_FOLDED #define PTRS_PER_PMD 1 +#define __PAGETABLE_PMD_FOLDED #define PTRS_PER_PUD 1 #else /* CONFIG_64BIT */ #define PTRS_PER_PMD 2048 -- 2.1.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org