Message ID | 99962272-12ff-975d-bf7f-7fd5d95a2df5@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org> 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 945D6C7EE23 for <linux-arm-kernel@archiver.kernel.org>; Thu, 8 Jun 2023 19:34:11 +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=EuFtM8wyEhF2yvi+ot7O3iCvZq8CYwK6crnq6dIfKgc=; b=XWA0U+57Ucmqkl gSHWD4kLON01IJ5HZgP/pqXJ/ohoOCqyicesxKgtZQBkml0g15ICDc7oLNrap8z0NOqN0BgNliBc3 hWU2Xm7PuiOWPkyG0Y0L5JgiwXGipVLyrd1sj+02L1mYRhfS2vq7rsjGlGyCKmmPIKvPX7DNddcdi MmwEPD6zM5IJHlDt9A5aM8D+QMFoPAmxlDQ+74idDil44/YP0ct2cj9xpq2fuGzrd4LZWxzBI6Nrz +ILchmTi1bw7KbL9OH5+hK+q1A3cZ5VrjFNlCgQOFcbCIl/YcvZnnca1nA2gEgSdK5h5ro1yFbGqv zoMzVxQcwEWNh/TGwPfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q7LOI-00ANtg-0L; Thu, 08 Jun 2023 19:33:50 +0000 Received: from mail-yb1-xb2f.google.com ([2607:f8b0:4864:20::b2f]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q7LOE-00ANrD-1K for linux-arm-kernel@lists.infradead.org; Thu, 08 Jun 2023 19:33:48 +0000 Received: by mail-yb1-xb2f.google.com with SMTP id 3f1490d57ef6-bb3a77abd7bso1062783276.0 for <linux-arm-kernel@lists.infradead.org>; Thu, 08 Jun 2023 12:33:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1686252825; x=1688844825; 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=1MipXBHlCgYLfuzhfDW5ZwUI8FUsKSE60AsqsEXw+S0tSnJg5UOmjRzYFHDLdCAJt8 yMkipeQIgxyZw78rcQRYlMT5UpzdJcWoIksfCpz/ydUZz6ZkI9xKVrX6kds0LvhIjEzt HS+XptOf+RYBmq4zm9J7IFzhbS7dVhum1cFHfBZOiQ+s0XEOXeKn/G9+gcrTCmXECFnx 8UoS3IHRM3ERDzeB2SU7OV6jhVelmg9iMKHzFrc8fJmEIq5uTYUBI9N7JZJvtQPChnnD 4+2NEzxtpjJGm4NjJthMMPpAkAfI8kDJwzbA28gjtv0iKudNeA4e3nFqgNhPbC/JEIjR C7cA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686252825; x=1688844825; 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=MoimXmNBaIh46FWBWBHCkkCeSy3RN2Ah1nbZVYlGAOppiEpku3U6I1AIuLY7+2hqDv fOK/whxqBUWA1xSOsNOHBF9orZ7VlGlfJNDlCXHE+201KadhI9ITZkRr1OzAByL/zHp+ PS2fnHOrquVBJ4f8w50gkSMnrGRJpbwAjuXFqIa1KZb4esRkeuWnAs/R/aP9kaToN9Kw xOHx3o8kBWrKQ8XAkydoTkMKWaq+FrICMUPJHeB91ePq3wUr5ubxru7+vVxob+i3+Ui9 B4+4GBNrc2Asjo5a7YpK8Ko8Gl32ncNjqwjTcQScUXCYXtNx85aBGKcEzj8vbGby94MV ZA4Q== X-Gm-Message-State: AC+VfDyRAVyvXbWEY8iS1wCHuxyyHAgiijQ9Yfc9FRxm1Aik6hHJvd45 10eLay/OcYcOgaIk6Oy54op67w== X-Google-Smtp-Source: ACHHUZ5fRes1KtQJuT48o2Wy/FuADD12yA75OXTij0wfUrs7MG5//8NY8cIlqChq28IRelwNgydDPg== X-Received: by 2002:a25:868e:0:b0:bad:1055:c9fd with SMTP id z14-20020a25868e000000b00bad1055c9fdmr569763ybk.49.1686252825296; Thu, 08 Jun 2023 12:33:45 -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 e188-20020a251ec5000000b00baca49c80dcsm448503ybe.28.2023.06.08.12.33.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 12:33:44 -0700 (PDT) Date: Thu, 8 Jun 2023 12:33:40 -0700 (PDT) From: Hugh Dickins <hughd@google.com> X-X-Sender: hugh@ripple.attlocal.net To: Andrew Morton <akpm@linux-foundation.org> cc: Mike Kravetz <mike.kravetz@oracle.com>, Mike Rapoport <rppt@kernel.org>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Matthew Wilcox <willy@infradead.org>, David Hildenbrand <david@redhat.com>, Suren Baghdasaryan <surenb@google.com>, Qi Zheng <zhengqi.arch@bytedance.com>, Peter Zijlstra <peterz@infradead.org>, Russell King <linux@armlinux.org.uk>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Geert Uytterhoeven <geert@linux-m68k.org>, Greg Ungerer <gerg@linux-m68k.org>, Michal Simek <monstr@monstr.eu>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Helge Deller <deller@gmx.de>, John David Anglin <dave.anglin@bell.net>, "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>, Michael Ellerman <mpe@ellerman.id.au>, Alexandre Ghiti <alexghiti@rivosinc.com>, Palmer Dabbelt <palmer@dabbelt.com>, Heiko Carstens <hca@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, Alexander Gordeev <agordeev@linux.ibm.com>, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>, "David S. Miller" <davem@davemloft.net>, Chris Zankel <chris@zankel.net>, Max Filippov <jcmvbkbc@gmail.com>, 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 v2 20/23] sparc: iounit and iommu use pte_offset_kernel() In-Reply-To: <a4963be9-7aa6-350-66d0-2ba843e1af44@google.com> Message-ID: <99962272-12ff-975d-bf7f-7fd5d95a2df5@google.com> References: <a4963be9-7aa6-350-66d0-2ba843e1af44@google.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230608_123346_454495_D2FE9ED4 X-CRM114-Status: GOOD ( 15.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org |
Series |
arch: allow pte_offset_map[_lock]() to fail
|
expand
|
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)); }
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 <hughd@google.com> --- arch/sparc/mm/io-unit.c | 2 +- arch/sparc/mm/iommu.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)