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[2607:7c80:54:e::133]) by mx.google.com with ESMTPS id k18si12891824pgh.244.2019.06.11.07.41.42 for (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 11 Jun 2019 07:41:42 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of batv+98d4ae9035936dc2f97b+5770+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) client-ip=2607:7c80:54:e::133; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20170209 header.b=NooVa7od; spf=pass (google.com: best guess record for domain of batv+98d4ae9035936dc2f97b+5770+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) smtp.mailfrom=BATV+98d4ae9035936dc2f97b+5770+infradead.org+hch@bombadil.srs.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=o2J4Gd6aGMYycQc2Cgd8ykATa6/NVo6qP3SsoSO5AUQ=; b=NooVa7odzLv7IOhiLuJXRzdAT 9847NXr6KbmlQQbCdm/roXtU733/1c0TujxJALV/CRskCxkSZJxIjTuvYje4Hu2HIx2/18lsT2IkT V4S9ZLfKxOjzNiNdjE9YSFiOAuEFWncLCMqFlld9C8E0tZO1blw/UZUNEDSAKtGyMp1ujFWNiFfe7 bemGU+fEPeBzJVI3EYWYyNcNlr9PPjI0kHfUCTEX9tUwAnnuaSJSqAOCWqlHSD1idi9GIdvUa4nKM oFIEUMzaP5Hxm/4DCKB8Fju5R0z5GUcY9hrj8tNMF/3Z6P45ZzjIK8YKFH6ozHQKYWGLVdntjkdeO jfIDBIm1w==; Received: from mpp-cp1-natpool-1-037.ethz.ch ([82.130.71.37] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hahxS-0005NR-8l; Tue, 11 Jun 2019 14:41:06 +0000 From: Christoph Hellwig To: Linus Torvalds , Paul Burton , James Hogan , Yoshinori Sato , Rich Felker , "David S. Miller" Cc: Nicholas Piggin , Khalid Aziz , Andrey Konovalov , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , linux-mips@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: switch the remaining architectures to use generic GUP v3 Date: Tue, 11 Jun 2019 16:40:46 +0200 Message-Id: <20190611144102.8848-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html 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: Hi Linus and maintainers, below is a series to switch mips, sh and sparc64 to use the generic GUP code so that we only have one codebase to touch for further improvements to this code. I don't have hardware for any of these architectures, and generally no clue about their page table management, so handle with care. Changes since v2: - rebase to mainline to pick up the untagged_addr definition - fix the gup range check to be start <= end to catch the 0 length case - use pfn based version for the missing pud_page/pgd_page definitions - fix a wrong check in the sparc64 version of pte_access_permitted Changes since v1: - fix various issues found by the build bot - cherry pick and use the untagged_addr helper form Andrey - add various refactoring patches to share more code over architectures - move the powerpc hugepd code to mm/gup.c and sync it with the generic hup semantics