From patchwork Wed Dec 18 16:23:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Price X-Patchwork-Id: 11301265 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 571D514E3 for ; Wed, 18 Dec 2019 16:24:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2445924680 for ; Wed, 18 Dec 2019 16:24:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2445924680 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B59EA8E011F; Wed, 18 Dec 2019 11:24:34 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id B0B3A8E00F5; Wed, 18 Dec 2019 11:24:34 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9D5728E011F; Wed, 18 Dec 2019 11:24:34 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0248.hostedemail.com [216.40.44.248]) by kanga.kvack.org (Postfix) with ESMTP id 84A018E00F5 for ; Wed, 18 Dec 2019 11:24:34 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 3AEE2181AEF00 for ; Wed, 18 Dec 2019 16:24:34 +0000 (UTC) X-FDA: 76278785268.02.dog44_27d4d5f4d1243 X-Spam-Summary: 2,0,0,72888389f2f85b86,d41d8cd98f00b204,steven.price@arm.com,:akpm@linux-foundation.org::steven.price@arm.com:luto@kernel.org:ard.biesheuvel@linaro.org:arnd@arndb.de:bp@alien8.de:catalin.marinas@arm.com:dave.hansen@linux.intel.com:mingo@redhat.com:james.morse@arm.com:jglisse@redhat.com:peterz@infradead.org:tglx@linutronix.de:will@kernel.org:x86@kernel.org:hpa@zytor.com:linux-arm-kernel@lists.infradead.org:linux-kernel@vger.kernel.org:mark.rutland@arm.com:kan.liang@linux.intel.com:linux@armlinux.org.uk,RULES_HIT:41:355:379:541:800:960:973:988:989:1260:1261:1311:1314:1345:1359:1437:1515:1534:1541:1711:1730:1747:1777:1792:1981:2194:2199:2393:2559:2562:2730:2892:3138:3139:3140:3141:3142:3352:3865:3866:3867:3868:3870:3871:3872:4321:5007:6261:6742:6743:7903:8634:10004:11026:11473:11657:11658:11914:12043:12297:12517:12519:12555:12895:12986:13069:13311:13357:13894:14181:14384:14394:14721:21080:21451:21627:21795:30029:30051:30054:30075,0,RBL:error,CacheIP:none,Bayesian :0.5,0.5 X-HE-Tag: dog44_27d4d5f4d1243 X-Filterd-Recvd-Size: 3400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf24.hostedemail.com (Postfix) with ESMTP for ; Wed, 18 Dec 2019 16:24:33 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D6FA311B3; Wed, 18 Dec 2019 08:24:32 -0800 (PST) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.56]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3CB643F719; Wed, 18 Dec 2019 08:24:30 -0800 (PST) From: Steven Price To: Andrew Morton , 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?b?SsOpcsO0bWUgR2xpc3Nl?= , 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" , Russell King Subject: [PATCH v17 03/23] arm: mm: Add p?d_leaf() definitions Date: Wed, 18 Dec 2019 16:23:42 +0000 Message-Id: <20191218162402.45610-4-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191218162402.45610-1-steven.price@arm.com> References: <20191218162402.45610-1-steven.price@arm.com> MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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_leaf() functions/macros. For arm pmd_large() already exists and does what we want. So simply provide the generic pmd_leaf() name. CC: Russell King CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Steven Price --- arch/arm/include/asm/pgtable-2level.h | 1 + arch/arm/include/asm/pgtable-3level.h | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h index 51beec41d48c..0d3ea35c97fe 100644 --- a/arch/arm/include/asm/pgtable-2level.h +++ b/arch/arm/include/asm/pgtable-2level.h @@ -189,6 +189,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) } #define pmd_large(pmd) (pmd_val(pmd) & 2) +#define pmd_leaf(pmd) (pmd_val(pmd) & 2) #define pmd_bad(pmd) (pmd_val(pmd) & 2) #define pmd_present(pmd) (pmd_val(pmd)) diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 5b18295021a0..ad55ab068dbf 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -134,6 +134,7 @@ #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_SECT) #define pmd_large(pmd) pmd_sect(pmd) +#define pmd_leaf(pmd) pmd_sect(pmd) #define pud_clear(pudp) \ do { \