Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp2659401ybz; Mon, 27 Apr 2020 01:57:32 -0700 (PDT) X-Google-Smtp-Source: APiQypIRsEYic93lfGIhlfux2inYCVs4/XOuVEfbBJtqkZjuQekqd1Z6G9isoN13xADmv9T/rIxM X-Received: by 2002:a17:906:7c11:: with SMTP id t17mr19255237ejo.73.1587977852304; Mon, 27 Apr 2020 01:57:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587977852; cv=none; d=google.com; s=arc-20160816; b=cr4/TKyjhF4NjshZm1KTjIrygJmBWe4QhTS9fyHRBRqkzh/mSXJqm565Q3j0qk8JQF CW5sehJfm+pYOp2FIjE2l+G/lfK8GnxPf86EAGlWL1bM8gkwPC7QzKoxJDmm3sQTD/sl 1JhPXglDo4TGcXwrnOKIyO9zKi5R/wnJRUq624pWSRpmMCgzZTBkf0kHwuDKEB00m+9V fXzFm/1YKZMdmFaspYmvadSywEMO4SiYzwQkQfMGq4fXhFo4X9+bCnl5elrkVl9mGQM5 QJD+ecLy27dI44HcvpgnwS8LFffHfMoQbBNas/bmrgBY0JDHiRveP1LrrBTS+jYcHlnE gMcA== 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 :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:dkim-signature; bh=WD5CEB84PYGnkljL91GU2HcSm2iIFIOGAEJsr9kazRQ=; b=kMaH5/dncUnXfnB5ol+KbvmIoY9RCGfe3rQzLvv6WVp/El7How47Ev8HgxhJfuxY4l MCpOSDtqB4jcnc38jmEAm4XBN91mp47drHDYjKfF3JXt7tDtiBEowQB4aLwDCjp6G5PT 84SQaBMd8LYwt0129LLvkC6Mvmj76FnOvhTz6sNQAo5yAAgz9xKollEDRsd6P15vvKJX FcAlLNPqQlxfIQlCPfrLe9k2o07XgO+YBJfGLyKvoRKc9Z/MkmuHgQBHm0+rL3Ol8x4x KjvvohednhVMDusxH3lRXioKotV5EKCSNPJEWtjsSWQVC0IpH1XrPdyF++jU3dN+zPid tH4w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@cogentembedded-com.20150623.gappssmtp.com header.s=20150623 header.b=z62B+eAr; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m10si7351360edr.459.2020.04.27.01.57.08; Mon, 27 Apr 2020 01:57:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@cogentembedded-com.20150623.gappssmtp.com header.s=20150623 header.b=z62B+eAr; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726507AbgD0Izx (ORCPT + 99 others); Mon, 27 Apr 2020 04:55:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726003AbgD0Izw (ORCPT ); Mon, 27 Apr 2020 04:55:52 -0400 Received: from mail-lf1-x141.google.com (mail-lf1-x141.google.com [IPv6:2a00:1450:4864:20::141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3ABF2C061A41 for ; Mon, 27 Apr 2020 01:55:52 -0700 (PDT) Received: by mail-lf1-x141.google.com with SMTP id 131so13103940lfh.11 for ; Mon, 27 Apr 2020 01:55:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cogentembedded-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=WD5CEB84PYGnkljL91GU2HcSm2iIFIOGAEJsr9kazRQ=; b=z62B+eAr+yM46IxeY8gnFq4+/05zI8Pp7FzGBNxc+cOimcXV9BbkiB9B8YMHwNB43m iEraiix7QoT9Pk+EHtQtZI32w9hTCaYnSYKM1UbwJTH841lEx45GP0Z8vW/mxgtjHZnO 2tlsS6THKasOoUi2Gngvwcx/jd4NWcGG1pyfZ25RPkEqy+zW14qoWpZ4/MvGGgU+LSTf N2yyppMDSVk9XZk2d9mTojaCCkiCleasYPN2oCt9WTJG2UHFAeTqZXxvs8X/pX4Be8Dt lK5G5cceSluGCOLNmwpMC/zDT21VL/KzoX/SpPVaM3t+CbhiC5qRKnbS7MEFKNI0dAar ZxdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=WD5CEB84PYGnkljL91GU2HcSm2iIFIOGAEJsr9kazRQ=; b=RSyf+CSbgMmbQPc3VCCwye4bpAEGjg4IMLeOJPKQbgZzIU8atV72KKujzzmiFpxUFd Opc09i9mZ/GrhKoAVFVik4GQmI5XmQFa/CspUlzzdAAWFPJtg9BqKo9f7H1kAM80eGyE w+nTVxnmDtofrBDdgTdCpXdyXeIXupYnIwggUVHTKd0zCip0iQIisjYrcF2WVuKA0vi/ wEQPJC/lB1WzGkRv1Gg2LB1/zAEw3awIWTMhQKETg92sGh47EMG8gDu+pzfGz9LGXbW5 Ysp0LEZlQ7EFAltYC4e7ycUgRdHdLV1BAPNBDeFDqF8X+JUOHrBy8sPb9mQpRRYnMqom hqOA== X-Gm-Message-State: AGi0PuY4y9a4h0i3wvYpaUczuWNL99prLkLwX06g2a8M4yxdEJYUJmch ObbvPQeoUJwRofHy9fv0N2w3xSM4Bcblkg== X-Received: by 2002:a05:6512:74:: with SMTP id i20mr14801520lfo.104.1587977749779; Mon, 27 Apr 2020 01:55:49 -0700 (PDT) Received: from ?IPv6:2a00:1fa0:468e:1152:9c79:cdeb:725:5fa4? ([2a00:1fa0:468e:1152:9c79:cdeb:725:5fa4]) by smtp.gmail.com with ESMTPSA id y9sm4001767ljy.31.2020.04.27.01.55.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Apr 2020 01:55:48 -0700 (PDT) Subject: Re: [PATCH 2/2] mips/mm: Enable SOFT_DIRTY for all 64bit systems To: Jiaxun Yang , akpm@linux-foundation.org Cc: sunguoyun@loongson.cn, Thomas Bogendoerfer , Paul Burton , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , Dmitry Korotin , Daniel Silsby , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org References: <20200426174058.1181837-1-jiaxun.yang@flygoat.com> <20200426174058.1181837-2-jiaxun.yang@flygoat.com> From: Sergei Shtylyov Message-ID: <2f94a9ce-74a2-29a0-3b1c-d4b2906e2750@cogentembedded.com> Date: Mon, 27 Apr 2020 11:55:44 +0300 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200426174058.1181837-2-jiaxun.yang@flygoat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! On 26.04.2020 20:40, Jiaxun Yang wrote: > 64bit systems always have enough page table bits. > So we can safely enable it for all of them instead of for Loongson > only. > > If oneday 32bit systems get 64bit PTEs than we can drop this > limition. Limitation? > Signed-off-by: Jiaxun Yang [...] MBR, Sergei