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[2607:7c80:54:e::133]) by mx.google.com with ESMTPS id 3si10675612plh.265.2019.07.01.08.19.00 for (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 01 Jul 2019 08:19:00 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of batv+bb02ddf78a79a38d855c+5790+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=B8zOfMOL; spf=pass (google.com: best guess record for domain of batv+bb02ddf78a79a38d855c+5790+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) smtp.mailfrom=BATV+bb02ddf78a79a38d855c+5790+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=3Ba+Jb98yVS5mZ3n94oGXQBYD6fv7eSFwFd2YiewCW0=; b=B8zOfMOLAu59NaUvSy8QYch5Jh NskcwR4SmdPEjEvWY+1ydPBApZywsDWMb5u4PEb5VzW92AySwlrysI5iqPnkp3omLj25ThQsOC8OQ VhpVvsHnGevdZJh5uci2lEnl3+OnEZs+hB8YdhBvjqdmhe8uaZ3GTURjRS9se6y1zC6uTlifH6Duz jQGnrj1ElyoefePcSMTTs0ZEzU/YG5oQFbDmjs4gOMgXnfoIaInv2X4QwXyvuepYtI15agNcO8hpv vQQCvAGi87ceTgfl8rtDBr32iVm1vSdz7dsEndDPWwZ3k9U1ghjO+iHrZ4ion4SiXsUNgC4FwnmyB jV4wmmCw==; Received: from [38.98.37.141] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hhy4q-0003zx-QI; Mon, 01 Jul 2019 15:18:46 +0000 From: Christoph Hellwig To: Andrew Morton , Guenter Roeck , Paul Burton , James Hogan , Yoshinori Sato , Rich Felker Cc: linux-mips@vger.kernel.org, linux-sh@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] MIPS: don't select ARCH_HAS_PTE_SPECIAL Date: Mon, 1 Jul 2019 17:18:18 +0200 Message-Id: <20190701151818.32227-3-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190701151818.32227-1-hch@lst.de> References: <20190701151818.32227-1-hch@lst.de> 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: MIPS doesn't really have a proper pte_special implementation, just stubs. It turns out they were not enough to make get_user_pages_fast work, so drop the select. This means get_user_pages_fast won't actually use the fast path for non-hugepage mappings, so someone who actually knows about mips page table management should look into adding real pte_special support. Fixes: eb9488e58bbc ("MIPS: use the generic get_user_pages_fast code") Reported-by: Guenter Roeck Signed-off-by: Christoph Hellwig --- arch/mips/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index b1e42f0e4ed0..7957d3457156 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -6,7 +6,6 @@ config MIPS select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT select ARCH_CLOCKSOURCE_DATA select ARCH_HAS_ELF_RANDOMIZE - select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_SUPPORTS_UPROBES -- 2.20.1