Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp3451460yba; Mon, 8 Apr 2019 20:03:58 -0700 (PDT) X-Google-Smtp-Source: APXvYqxICPPYavnYTA+x3SnZuSkpu0APIMYemQ96a1zIM4vdRyn+BknqwK5TCC3ixyt/tbQz7tVX X-Received: by 2002:a17:902:7d8f:: with SMTP id a15mr344256plm.3.1554779038279; Mon, 08 Apr 2019 20:03:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1554779038; cv=none; d=google.com; s=arc-20160816; b=HukIdmBXwST679+toR/Vg5KdRZbgCuef6ADo+JaB6OUH8WtLG5gK2qpQnOYW6VodX+ BsGjFsuf9q81nsDCKMKDxdVfemDJalvSNTo3gpR3LYBSSckhUcmq+FKJtNDfzlVnV1UZ Sd+EyPzkBpTqPEFfmdxKGtB87YEjkvToMDB0+NbtGuJ84FMQj11hLLj17wfNua21gdqM lbXccvJ+RVx9lv8pevoIPoqBckGBsXTR1Qi1C/AoSXf80w/Pyxkr4Kxx7qGXB72/Wje/ YS/1LYVDTWOPkWRjWqw4htW7vw/kH7NEgyFcf2i0K1vKXKPwV5IUGFFR44rmvC/H0snt +kjA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=t5lw2qiEV7u1MtseXj9orZVuUVyZtBqwN7cNHwi+l4c=; b=w8W1eOXQm3j5IHDqStyokp0E8hrTDbOEjOEBu/+oNlxpQ8hzmiHvLIEjBI4FIMCQ9F k+Skjc/IYOA3eudP7WkZa5o9l3Ney/35l7iNcxhtNv5TFAnlmezxQHvKSTJ+WuXVNUGb E/KK7aI9KpU7gWnZ8vpvL6Vh/6hJ/U11EcOdLfxUZ47fGZGdXamVBYXo+Qp2b5Z+/0bO dEI2dCORwG+VuHRIgq5LuRR0HSg6G4z+UmIa2y6+8twkwTe75LjZlo1rLqnJ1g5NwP+C o2XLEtxIuRktOPmEmzA5/TVhzXgfm2JqXBx8KLojHfB2yfScByoSJcmCNXrLsxROBOhB KiRw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=2bhE8Sbj; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e5si7077357plb.249.2019.04.08.20.03.31; Mon, 08 Apr 2019 20:03:58 -0700 (PDT) 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; dkim=pass header.i=@kernel.org header.s=default header.b=2bhE8Sbj; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726497AbfDIDCv (ORCPT + 99 others); Mon, 8 Apr 2019 23:02:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:46714 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726081AbfDIDCv (ORCPT ); Mon, 8 Apr 2019 23:02:51 -0400 Received: from guoren-Inspiron-7460 (23.83.240.247.16clouds.com [23.83.240.247]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E7EB320883; Tue, 9 Apr 2019 03:02:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554778970; bh=t5lw2qiEV7u1MtseXj9orZVuUVyZtBqwN7cNHwi+l4c=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=2bhE8Sbjuk9jyJKrtShYLySVEYb5pQrGpE62ml0qxRkjLRO099Om7Qws+zEpmPRd4 tJrBRDWYaplPia1YS1Ujm0SWLMX2DpatrJaBnvkMW3KibxJi7RFJ+Nos3Zo97PpBN/ XU0sGymKChUEgBS/lVwKPHD/ZvHqGk4jxO8rHzNU= Date: Tue, 9 Apr 2019 11:02:31 +0800 From: Guo Ren To: Anup Patel Cc: Palmer Dabbelt , Albert Ou , "linux-kernel@vger.kernel.org" , Mike Rapoport , Christoph Hellwig , Atish Patra , Gary Guo , Paul Walmsley , "linux-riscv@lists.infradead.org" Subject: Re: [PATCH v2] RISC-V: Implement ASID allocator Message-ID: <20190409030231.GA14861@guoren-Inspiron-7460> References: <20190328063211.13052-1-anup.patel@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190328063211.13052-1-anup.patel@wdc.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Anup, On Thu, Mar 28, 2019 at 06:32:36AM +0000, Anup Patel wrote: > This patch is tested on QEMU/virt machine and SiFive Unleashed board. > On QEMU/virt machine, we see 10% (approx) performance improvement with > SW emulated TLBs provided by QEMU. Unfortunately, ASID bits of SATP CSR > are not implemented on SiFive Unleashed board so we don't see any change > in performance. Can you tell me what is the test case ? Best Regards Guo Ren