From patchwork Wed May 10 05:07:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugh Dickins X-Patchwork-Id: 13236433 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 78250C7EE2E for ; Wed, 10 May 2023 05:07:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:Message-ID: In-Reply-To:Subject:cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=b0223WBIF6fiVrmVpzVZ2XroPDihtxabq5UB2EQAg3c=; b=GjkTTxL8LPTk9+ /kgBUlgNbWyTIXcG02/30nbXC3g1m3C6EBTb0qNa+MXMPjDmkbEGzVH9T8/a+zQRGJsoko/9w/MHI zpFg+n8LsO28hJhXOa3q0XdAgaPM0JoK0ycNaxltqy8ntr6VWn3Pu9z4H5YVbMPLFPOD77NleP01D Wdtm+fUE/eQ6KF3B0ttL/hbimQe+SFzoqNkZ24g5GWh+b9uK4yyMK2MbIRg/XmEnILWm47pkAeA2a AkiZDN7rtLF7OmT0nF2xCescl2nVAw1yTAxs8chLXqe+iKnP80C8GDEV74XkGhVEY/sFG77JeezyP R52TkuHeWrqLH6DRJr5w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pwc2p-0056m8-1P; Wed, 10 May 2023 05:07:19 +0000 Received: from mail-yb1-xb2c.google.com ([2607:f8b0:4864:20::b2c]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pwc2m-0056l5-1i for linux-riscv@lists.infradead.org; Wed, 10 May 2023 05:07:17 +0000 Received: by mail-yb1-xb2c.google.com with SMTP id 3f1490d57ef6-b99489836aaso5852628276.0 for ; Tue, 09 May 2023 22:07:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683695235; x=1686287235; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:from:to:cc:subject:date:message-id:reply-to; bh=Tza8VZpBdDATlz3Dj70XvbHnC1ZhEpBq1MlG3gUrqGw=; b=S6w9KIHhVJNT1kfpH+CUQlKS0lqLbNW2sjOBWirezocHkXz48EoJrIXM28PJV5vm9/ 2IKW7KEx40R4sNFdhRCA79Q4DhbKDdFLB3FgyR3tFeJ93PW/6Nj70i7kVvMQyXQV/Eg6 g+52YfmHhke7+sazfpIRwUSNXlxrgB0TXY5awNjnSJrSmQkBkwlsZpKuYTtxmU5X5rbM qMqKwQoK0rcCOG5LK7I/q4x4RfW+gqW8hxUEuUs6WrZ6huYWyzA0eBrWurtLVkyq8+rs BH6Tq3wNedbL7gmT0QCOruJR/a85R9e5ddGQi0eR0moWYsK+a+xYsl7ixIrgRtJQdod3 eejw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683695235; x=1686287235; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Tza8VZpBdDATlz3Dj70XvbHnC1ZhEpBq1MlG3gUrqGw=; b=Fk3gNN95nJnDGHBwVjDsUDYLhGeAq6PnSoCt4QmYo0WhuNhNWVOMtA+DQNatSzEDUM fMCBxYFjo1JTuua6QoxRttDY2Fvs/Q1sio9HVcnWbqyZQ74pFNGVxmD7tkGXxipDefVn 973TVmLnjIsYwnD2pBJlw574ulfh88abw72aRi+ercrikwItwb0LPDJxMuqFErHCsVUS Nuq6j4wOyVvks8fHjqw5/cyzY3dJFXeTEfJE3X0bgpi3kValKx+Rt5fSmxJnIhsKn325 7H/5914DcycNbvFCytjKFQfAxhN3tNcHxrhKCc/0zhtomDpLWw6gzwTsUXZHZhD+DnGD 1UZw== X-Gm-Message-State: AC+VfDxZW+adJz6pcOfKeV0FqYTOvGV9XI5VDU3c4Kl/9PtUxJ5RP/5l +/5ug66BXNghT8yxdrwhYpQiDw== X-Google-Smtp-Source: ACHHUZ7O+RQwO6EUyGZuwP0aiZ///c7pXxA4KLKL9a6yKbaYGakuuwEnBLT515Jc9UpNtzb0LrlfGg== X-Received: by 2002:a25:6c4:0:b0:ba2:6aea:2ba with SMTP id 187-20020a2506c4000000b00ba26aea02bamr10201500ybg.23.1683695235431; Tue, 09 May 2023 22:07:15 -0700 (PDT) Received: from ripple.attlocal.net (172-10-233-147.lightspeed.sntcca.sbcglobal.net. [172.10.233.147]) by smtp.gmail.com with ESMTPSA id k142-20020a252494000000b00b8bcaf1e660sm3553476ybk.4.2023.05.09.22.07.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 May 2023 22:07:15 -0700 (PDT) Date: Tue, 9 May 2023 22:07:11 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@ripple.attlocal.net To: Andrew Morton cc: Mike Kravetz , Mike Rapoport , "Kirill A. Shutemov" , Matthew Wilcox , David Hildenbrand , Suren Baghdasaryan , Qi Zheng , Russell King , Catalin Marinas , Will Deacon , Geert Uytterhoeven , Greg Ungerer , Michal Simek , Thomas Bogendoerfer , Helge Deller , John David Anglin , "Aneesh Kumar K.V" , Michael Ellerman , Alexandre Ghiti , Palmer Dabbelt , Heiko Carstens , Christian Borntraeger , Claudio Imbrenda , John Paul Adrian Glaubitz , "David S. Miller" , Chris Zankel , Max Filippov , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 20/23] sparc: iounit and iommu use pte_offset_kernel() In-Reply-To: <77a5d8c-406b-7068-4f17-23b7ac53bc83@google.com> Message-ID: <43c7b4b1-3719-93de-dc3e-33625fa2ad@google.com> References: <77a5d8c-406b-7068-4f17-23b7ac53bc83@google.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230509_220716_576282_5B94EA05 X-CRM114-Status: GOOD ( 13.94 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org iounit_alloc() and sbus_iommu_alloc() are working from pmd_off_k(), so should use pte_offset_kernel() instead of pte_offset_map(), to avoid the question of whether a pte_unmap() will be needed to balance. Signed-off-by: Hugh Dickins --- arch/sparc/mm/io-unit.c | 2 +- arch/sparc/mm/iommu.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c index bf3e6d2fe5d9..133dd42570d6 100644 --- a/arch/sparc/mm/io-unit.c +++ b/arch/sparc/mm/io-unit.c @@ -244,7 +244,7 @@ static void *iounit_alloc(struct device *dev, size_t len, long i; pmdp = pmd_off_k(addr); - ptep = pte_offset_map(pmdp, addr); + ptep = pte_offset_kernel(pmdp, addr); set_pte(ptep, mk_pte(virt_to_page(page), dvma_prot)); diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c index 9e3f6933ca13..3a6caef68348 100644 --- a/arch/sparc/mm/iommu.c +++ b/arch/sparc/mm/iommu.c @@ -358,7 +358,7 @@ static void *sbus_iommu_alloc(struct device *dev, size_t len, __flush_page_to_ram(page); pmdp = pmd_off_k(addr); - ptep = pte_offset_map(pmdp, addr); + ptep = pte_offset_kernel(pmdp, addr); set_pte(ptep, mk_pte(virt_to_page(page), dvma_prot)); }