From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Joel Fernandes (Google)" Subject: [PATCH 3/4] arm64: select HAVE_MOVE_PMD for faster mremap (v1) Date: Fri, 12 Oct 2018 18:31:59 -0700 Message-ID: <20181013013200.206928-4-joel@joelfernandes.org> References: <20181013013200.206928-1-joel@joelfernandes.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7nbaYAZCArkwulWcph7mnWBdigkVmF+XmR+PMMvt/cc=; b=i5fuiKu2eQo613 Ab6hpclGDFS1Vo5SYmtyLQ1/6ezXH8OO+KZVcKLDRrSDN5cni9jAOe3wwVjYJM0D0cIsB+OXdvHQk JRtfmmA80qVkOX3nEc9uxnQuQhFxbKv0txubdmBU5efVY2eDJXn3AYdPyecCjYD4+SS4KWW7u2c5o yb3mIkSOD84BMydBXRFBVWtt+yAnO/LW4qt6b+hqqAhylr9nfCkt3LF4yGlT8WvENEyeImLSpv1bi nhox6wWhgvOkOrO8KWt3BLZAcFtdNAzBkrHAPlcnJhU6I8pYpYiIaEkfuUKhbo9lzSC+lYeNVmPSm kNEfpU+abMnK4IlhnXpg==; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bjYTsH4Iq69Ub7N2c7p2HOCfpyLGuHcm9WhDWE1Dnwg=; b=pvEfVikziMJRWxtTRTm3WwDM1z7pcXybcAtnjCIyQdfWN8O5jRGdCgjUlGTjsMAT/F saWeGlI2HK0vC3ro6vBYXn3xIZY1BMwuP8djzpt6M+eKMtkHqPqZ+mldfVclfk22srUA b5EsPUgxygKFL8hgKZ6UMDusfAYxbbW7exB4M= In-Reply-To: <20181013013200.206928-1-joel@joelfernandes.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+gla-linux-snps-arc=m.gmane.org@lists.infradead.org To: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org, Rich Felker , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , Will Deacon , mhocko@kernel.org, linux-mm@kvack.org, lokeshgidra@google.com, "Joel Fernandes (Google)" , linux-riscv@lists.infradead.org, elfring@users.sourceforge.net, Jonas Bonn , kvmarm@lists.cs.columbia.edu, dancol@google.com, Yoshinori Sato , sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-hexagon@vger.kernel.org, Helge Deller , "maintainer:X86 ARCHITECTURE 32-BIT AND 64-BIT" , hughd@google.com, "James E.J. Bottomley" , kasan-dev@googlegroups.com, anton.ivanov@kot-begem Moving page-tables at the PMD-level on arm64 is known to be safe. Enable this option so that we can do fast mremap when possible. Signed-off-by: Joel Fernandes (Google) --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1b1a0e95c751..5d7c35c6f90c 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -135,6 +135,7 @@ config ARM64 select HAVE_IRQ_TIME_ACCOUNTING select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP if NUMA + select HAVE_MOVE_PMD select HAVE_NMI select HAVE_PATA_PLATFORM select HAVE_PERF_EVENTS -- 2.19.0.605.g01d371f741-goog