From patchwork Tue Apr 14 11:44:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 11487305 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 59471912 for ; Tue, 14 Apr 2020 11:44:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 268FB20936 for ; Tue, 14 Apr 2020 11:44:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 268FB20936 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 340E38E0006; Tue, 14 Apr 2020 07:44:57 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 2F10D8E0001; Tue, 14 Apr 2020 07:44:57 -0400 (EDT) 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 22DDF8E0006; Tue, 14 Apr 2020 07:44:57 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0185.hostedemail.com [216.40.44.185]) by kanga.kvack.org (Postfix) with ESMTP id 0987A8E0001 for ; Tue, 14 Apr 2020 07:44:57 -0400 (EDT) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id C11ED8245578 for ; Tue, 14 Apr 2020 11:44:56 +0000 (UTC) X-FDA: 76706278992.09.jeans48_655b3ca590523 X-Spam-Summary: 2,0,0,2dc97ed7b2f8ba6f,d41d8cd98f00b204,anshuman.khandual@arm.com,,RULES_HIT:41:355:379:541:800:960:973:982:988:989:1260:1261:1345:1359:1431:1437:1534:1541:1711:1730:1747:1777:1792:1963:2393:2559:2562:2693:3138:3139:3140:3141:3142:3352:3865:3871:3872:4250:5007:6261:8634:9592:10004:11026:11473:11657:11658:11914:12043:12114:12296:12297:12438:12555:12895:13069:13141:13230:13311:13357:13846:14096:14181:14384:14394:14721:21080:21451:21627:21990:30054,0,RBL:217.140.110.172:@arm.com:.lbl8.mailshell.net-62.2.0.100 64.100.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: jeans48_655b3ca590523 X-Filterd-Recvd-Size: 2435 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Tue, 14 Apr 2020 11:44:56 +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 8282431B; Tue, 14 Apr 2020 04:44:55 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.1.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3F5443F6C4; Tue, 14 Apr 2020 04:44:53 -0700 (PDT) From: Anshuman Khandual To: linux-mm@kvack.org Cc: Anshuman Khandual , Catalin Marinas , Will Deacon , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] arm64/mm: Drop __HAVE_ARCH_HUGE_PTEP_GET Date: Tue, 14 Apr 2020 17:14:28 +0530 Message-Id: <1586864670-21799-2-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586864670-21799-1-git-send-email-anshuman.khandual@arm.com> References: <1586864670-21799-1-git-send-email-anshuman.khandual@arm.com> 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: Platform specific huge_ptep_get() is required only when fetching the huge PTE involves more than just dereferencing the page table pointer. This is not the case on arm64 platform. Hence huge_ptep_pte() can be dropped along with it's __HAVE_ARCH_HUGE_PTEP_GET subscription. Cc: Catalin Marinas Cc: Will Deacon Cc: Andrew Morton Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm64/include/asm/hugetlb.h | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h index 2eb6c234d594..b88878ddc88b 100644 --- a/arch/arm64/include/asm/hugetlb.h +++ b/arch/arm64/include/asm/hugetlb.h @@ -17,12 +17,6 @@ extern bool arch_hugetlb_migration_supported(struct hstate *h); #endif -#define __HAVE_ARCH_HUGE_PTEP_GET -static inline pte_t huge_ptep_get(pte_t *ptep) -{ - return READ_ONCE(*ptep); -} - static inline int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, unsigned long len) {