From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D38FAC4360F for ; Wed, 27 Feb 2019 17:07:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0914218A4 for ; Wed, 27 Feb 2019 17:07:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730407AbfB0RHj (ORCPT ); Wed, 27 Feb 2019 12:07:39 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:36384 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729402AbfB0RHi (ORCPT ); Wed, 27 Feb 2019 12:07:38 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AE15D1684; Wed, 27 Feb 2019 09:07:37 -0800 (PST) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.69]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 056103F738; Wed, 27 Feb 2019 09:07:33 -0800 (PST) From: Steven Price To: linux-mm@kvack.org Cc: Steven Price , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Dave Hansen , Ingo Molnar , James Morse , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Peter Zijlstra , Thomas Gleixner , Will Deacon , x86@kernel.org, "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Rutland , "Liang, Kan" , Martin Schwidefsky , Heiko Carstens , linux-s390@vger.kernel.org Subject: [PATCH v3 18/34] s390: mm: Add p?d_large() definitions Date: Wed, 27 Feb 2019 17:05:52 +0000 Message-Id: <20190227170608.27963-19-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190227170608.27963-1-steven.price@arm.com> References: <20190227170608.27963-1-steven.price@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information is provided by the p?d_large() functions/macros. For s390, we don't support large pages, so add a stub returning 0. CC: Martin Schwidefsky CC: Heiko Carstens CC: linux-s390@vger.kernel.org Signed-off-by: Steven Price --- arch/s390/include/asm/pgtable.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 063732414dfb..9617f1fb69b4 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -605,6 +605,11 @@ static inline int pgd_present(pgd_t pgd) return (pgd_val(pgd) & _REGION_ENTRY_ORIGIN) != 0UL; } +static inline int pgd_large(pgd_t pgd) +{ + return 0; +} + static inline int pgd_none(pgd_t pgd) { if (pgd_folded(pgd)) @@ -645,6 +650,11 @@ static inline int p4d_present(p4d_t p4d) return (p4d_val(p4d) & _REGION_ENTRY_ORIGIN) != 0UL; } +static inline int p4d_large(p4d_t p4d) +{ + return 0; +} + static inline int p4d_none(p4d_t p4d) { if (p4d_folded(p4d)) -- 2.20.1