Received: by 2002:ac0:8845:0:0:0:0:0 with SMTP id g63csp2117975img; Wed, 27 Feb 2019 10:39:19 -0800 (PST) X-Google-Smtp-Source: AHgI3IYmz9FpflYpQbBbwP/jlDsi9mkRvIhDn0RvrYnWJhDhujXwVczWAuR5RljnbCfSGArnn9en X-Received: by 2002:a62:4e8a:: with SMTP id c132mr3077105pfb.24.1551292759392; Wed, 27 Feb 2019 10:39:19 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1551292759; cv=none; d=google.com; s=arc-20160816; b=XJiu72ZOLzXXzc/JnHKPQvLcK4pt4Weo/jyabBpSt2sWClqCjhNWSP7TZq1pP/kZX1 yTjHbJjx8k/yv1JMYiibYxbVZ9oGXyo1ULTNSvrrxFxDx0ztlwtIrI1sYPmYJ1p6eTzW +IewBJBRGSJqSQFyQkX3moDAdkv7/X1U98fCO+OGdtPz1kFgba0YHP52XS3/0+MyBInf ndgEoFRAaSzI6XXJvJ3kSxNZfjmDVi/MOp5PHbDQwlRd9Wf0smYBPpP7yfEm94GLQUbi UC3LgpuDs5f/quYrz8azAKyPs2p2xruag6TTSZT/zhq7VkYR+BaYOAZo+H8zt4dIeM8s L+6Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date; bh=91FNbJgK9Kz8YKrwF3lHruGDyhxdjpp/AkW7uhJm7RM=; b=CEO8kC0QyC2Hzhd/USv4BFsKWEGQsakhj3rYNPuAGmEJrY8riIBedtXa2AXx38dPP8 bqNQLX56nkkWsX2/f8W1Nv/YggpKukxqyZJz8Os9q8UpP/zUguvD0a3eHJkFFc65/xeh qiZwGq02/QZTJNVMwr+GkyX86prFlSjZL2Qhq55paDQmHLEMPLrlXImdff50zazKqs6O n4qjeiS0yY8N8U+pvb2mx3lSTv+jJ048YqM+pYhnuajk0c0qfJwsmkINPSJVqg61/eTV RMyw/fdAKG9ze2BwKRVMneVDYVRbtLSNxezL90kPCZuTrECwzUwlcER3bUpo+GjJ1gXu a3zA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id a15si12346580pgg.560.2019.02.27.10.39.05; Wed, 27 Feb 2019 10:39:19 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730089AbfB0Sik (ORCPT + 99 others); Wed, 27 Feb 2019 13:38:40 -0500 Received: from shards.monkeyblade.net ([23.128.96.9]:46990 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726397AbfB0Sij (ORCPT ); Wed, 27 Feb 2019 13:38:39 -0500 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::bf5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 157C214010634; Wed, 27 Feb 2019 10:38:38 -0800 (PST) Date: Wed, 27 Feb 2019 10:38:37 -0800 (PST) Message-Id: <20190227.103837.668255833945043179.davem@davemloft.net> To: steven.price@arm.com Cc: linux-mm@kvack.org, luto@kernel.org, ard.biesheuvel@linaro.org, arnd@arndb.de, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, mingo@redhat.com, james.morse@arm.com, jglisse@redhat.com, peterz@infradead.org, tglx@linutronix.de, will.deacon@arm.com, x86@kernel.org, hpa@zytor.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark.Rutland@arm.com, kan.liang@linux.intel.com, sparclinux@vger.kernel.org Subject: Re: [PATCH v3 20/34] sparc: mm: Add p?d_large() definitions From: David Miller In-Reply-To: <20190227170608.27963-21-steven.price@arm.com> References: <20190227170608.27963-1-steven.price@arm.com> <20190227170608.27963-21-steven.price@arm.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 27 Feb 2019 10:38:38 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Price Date: Wed, 27 Feb 2019 17:05:54 +0000 > walk_page_range() is going to be allowed to walk page tables other than > those of user space. For this it needs to know when it has reached a > 'leaf' entry in the page tables. This information is provided by the > p?d_large() functions/macros. > > For sparc, we don't support large pages, so add stubs returning 0. > > CC: "David S. Miller" > CC: sparclinux@vger.kernel.org > Signed-off-by: Steven Price Sparc does support large pages on 64-bit, just not at this level. It would be nice if the commit message was made more accurate. Other than that: Acked-by: David S. Miller