Message ID | 20190601074959.14036-3-hch@lst.de (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[2607:7c80:54:e::133]) by mx.google.com with ESMTPS id p3si8960791plo.170.2019.06.01.00.50.49 for <linux-mm@kvack.org> (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 01 Jun 2019 00:50:49 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of batv+47bfdebe920718d2a071+5760+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=rcHoPkNB; spf=pass (google.com: best guess record for domain of batv+47bfdebe920718d2a071+5760+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) smtp.mailfrom=BATV+47bfdebe920718d2a071+5760+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:References:In-Reply-To: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:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=yY/ra2PGFgbg7XqU3FF0wFq0V6rCLZSmY3LqWPMhNa4=; b=rcHoPkNBcn5I35lT0nSXPSoUmK 4vxZRGXHEDwfmRiduNeBcHUEvPxoD8OJrN0S5PQmE3re/arNQar+m7iSLIMTsowGpB4Ex04zPb/gN 29PPacLkhP5k/ojj3/Pa75U++zPDy3dYVb7BB3Paj88dFUs47D6xLlvkBHuqM7Il063uPmOqZZNcF wD8Tfl4VS9E3grfV6nmX4Tt/FE4OvZDbbNPrwWgUWcHBoL/a9qclxKhIIBdy59SE5ZBiYm89iK4RM INzpbbwRa9Sf7Gyw3QMcVnAV2C3wd8IfP0CShLYG4iQifTBRdaFTvSUlYc0QaQRmDfkZUOHZgrJuX 0fxi4omg==; Received: from 217-76-161-89.static.highway.a1.net ([217.76.161.89] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hWymI-0007kx-5x; Sat, 01 Jun 2019 07:50:11 +0000 From: Christoph Hellwig <hch@lst.de> To: Linus Torvalds <torvalds@linux-foundation.org>, Paul Burton <paul.burton@mips.com>, James Hogan <jhogan@kernel.org>, Yoshinori Sato <ysato@users.sourceforge.jp>, Rich Felker <dalias@libc.org>, "David S. Miller" <davem@davemloft.net> Cc: Nicholas Piggin <npiggin@gmail.com>, Khalid Aziz <khalid.aziz@oracle.com>, Andrey Konovalov <andreyknvl@google.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, 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: [PATCH 02/16] mm: use untagged_addr() for get_user_pages_fast addresses Date: Sat, 1 Jun 2019 09:49:45 +0200 Message-Id: <20190601074959.14036-3-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190601074959.14036-1-hch@lst.de> References: <20190601074959.14036-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> 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: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
[01/16] uaccess: add untagged_addr definition for other arches
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diff --git a/mm/gup.c b/mm/gup.c index f173fcbaf1b2..9775f7675653 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -2145,7 +2145,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, unsigned long flags; int nr = 0; - start &= PAGE_MASK; + start = untagged_addr(start) & PAGE_MASK; len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len; @@ -2218,7 +2218,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, unsigned long addr, len, end; int nr = 0, ret = 0; - start &= PAGE_MASK; + start = untagged_addr(start) & PAGE_MASK; addr = start; len = (unsigned long) nr_pages << PAGE_SHIFT; end = start + len;
This will allow sparc64 to override its ADI tags for get_user_pages and get_user_pages_fast. Signed-off-by: Christoph Hellwig <hch@lst.de> --- mm/gup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)