From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4B27DC77B7C for ; Fri, 5 May 2023 11:55:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PMwRzIp+JPMhyWKeoWWlziATtWF3aow+A2vx5pCiNMk=; b=Diw+W2kax8QXLD yt3+GFKqHdBBdFWikTIuUCw0PqJ3HroH2Re0NdRmtcc0QrJdRjgG0w9cPqWbdr/5P76JUcU9NPuCr YLPOd2NQJq2DSDXtlLU9fDfxfBqYCPnUZAP7A8pTq/qGgv8RGHTikteebOB84h4hSN4Ia9YjVOeHQ A8/LpqmxwPE8sd/huPXS984tHpeECtSZv678jIQA+CppMGBi8+1IaZNGmDlJ2/JrD/2pmeO8o4bxO qpZAKg6t9ipuj9+mn0uhvBbo+gFtrJ7dKz/ojqVVDX6WnBrMyUTW50so1exXOrd9k9G+uFIa3xhMa 4iD07gPPGw+Y8iWzF7QA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1puu1g-00Anfg-20; Fri, 05 May 2023 11:55:04 +0000 Received: from mail-ed1-x52e.google.com ([2a00:1450:4864:20::52e]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1puu1b-00Anf3-1u for linux-riscv@lists.infradead.org; Fri, 05 May 2023 11:55:01 +0000 Received: by mail-ed1-x52e.google.com with SMTP id 4fb4d7f45d1cf-50bc075d6b2so3200152a12.0 for ; Fri, 05 May 2023 04:54:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1683287697; x=1685879697; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=zM/VTk0nCWAdXB8YnvYclgcFXMLvHHH3s1VUR5VWYms=; b=kpzLVpWiLNgD8K0vDvOI0wChk8sYz6Jg5YOpkRdakeQnYl5uTUIpadC5h+rG3oOs46 tuglgrTwcc+qYMWj0zdVSonEvt2SI8DSYsNo+xlNJsyb0//hTNTFrhrRc7ySOpnmaTFd tsFOh5KN9ZijtVV8RX7CSalDLYJyt55vQ7TEq6DQMKFqD6/Tl2pd3ConxCYMH8/1Igri erF+eCejob5ZwxkO+TTk2vfSSTBRKBdIWl95t5Ey3rh9joqCgoZk4Bvxf7GcFVHlX8MV rE0k7eoJoTkXI+7VTjh/87dbvsngLoxdO+QiNXBelqz3kRrmHu7L8oM6wemxHnfDmgMG 6d+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683287697; x=1685879697; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=zM/VTk0nCWAdXB8YnvYclgcFXMLvHHH3s1VUR5VWYms=; b=buqyuk+H71oPQDpOMhKJYHELXnwxSlhaF8ATNj4ynZNxq5vu2mPfI9VVjzsfG312eh pkebmW1M6RdlPhGczTf6FNthcOgmM5M6OZkU+3rrUWx9H8RyogNj1EsTsfI7kPAss8Hi ULPfKRhx3b2C1shtfrQ9cvN0kTKQNAZdFmB3qIEGC6hKr9gMsqtLABNWjawMIT0T4ppc f803J56nd0J0mlPZH6WhCIMBrgHfksRWXgHHcDTs1yGL4JSkawS6X9a7p/sB1JjdpqIR Eq2qJRYHYOFfDk+3MAK+Rb7J23rqjm9kIbyOCcKn8fJEbXu2/MOMjvpAAg4zYvde+iuh R8SA== X-Gm-Message-State: AC+VfDzhmAUB+EjL091Jw5emz7W/PzMQolZCtd4r6OA8AWS3GHYgf7m8 fI8inwyYvlDuh+8hoWYVo0g/eZ9S3poKGXckI8Q= X-Google-Smtp-Source: ACHHUZ7K1jQWPOENUU6Pnw2mq5kQVjdt+RFVfMhzxebmNSaWGppR+0kyH8oGgVJn58qEyTXeNW7Y3Q== X-Received: by 2002:aa7:ccc8:0:b0:508:3f06:8fd1 with SMTP id y8-20020aa7ccc8000000b005083f068fd1mr1120300edt.29.1683287697284; Fri, 05 May 2023 04:54:57 -0700 (PDT) Received: from localhost (2001-1ae9-1c2-4c00-20f-c6b4-1e57-7965.ip6.tmcz.cz. [2001:1ae9:1c2:4c00:20f:c6b4:1e57:7965]) by smtp.gmail.com with ESMTPSA id r5-20020aa7d585000000b0050696c2d2f6sm2888969edq.88.2023.05.05.04.54.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 May 2023 04:54:56 -0700 (PDT) Date: Fri, 5 May 2023 13:54:56 +0200 From: Andrew Jones To: =?utf-8?B?5byg6aOe?= Cc: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] riscv: Optimize memset Message-ID: <20230505-9ec599a36801972451e8b17f@orel> References: <6d1cbe2e.3c31d.187eb14d990.Coremail.zhangfei@nj.iscas.ac.cn> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <6d1cbe2e.3c31d.187eb14d990.Coremail.zhangfei@nj.iscas.ac.cn> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230505_045459_647732_F6D6C858 X-CRM114-Status: GOOD ( 18.63 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org ClBsZWFzZSBkb24ndCBwb3N0IHBhdGNoZXMgYXMgYXR0YWNobWVudHMuCgo+IEZyb206IHpoYW5n ZmVpIDx6aGFuZ2ZlaUBuai5pc2Nhcy5hYy5jbj4KPiBEYXRlOiBGcmksIDUgTWF5IDIwMjMgMTQ6 NTg6MzUgKzA4MDAKPiBTdWJqZWN0OiBbUEFUQ0hdIHJpc2N2OiBPcHRpbWl6ZSBtZW1zZXQKPiAK PiBUaGlzIHBhdGNoIGhhcyBiZWVuIG9wdGltaXplZCBmb3IgbWVtc2V0IGRhdGEgc2l6ZXMgbGVz cyB0aGFuIDE2IGJ5dGVzLgo+IENvbXBhcmVkIHRvIGJ5dGUgYnkgYnl0ZSBzdG9yYWdlLCBzaWdu aWZpY2FudCBwZXJmb3JtYW5jZSBpbXByb3ZlbWVudCBoYXMgYmVlbiBhY2hpZXZlZC4KPiAKPiBT aWduZWQtb2ZmLWJ5OiBGZWkgWmhhbmcgPHpoYW5nZmVpQG5qLmlzY2FzLmFjLmNuPgo+IC0tLQo+ ICBhcmNoL3Jpc2N2L2xpYi9tZW1zZXQuUyB8IDMzICsrKysrKysrKysrKysrKysrKysrKysrKysr KysrKy0tLQo+ICAxIGZpbGUgY2hhbmdlZCwgMzAgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMo LSkKPiAKPiBkaWZmIC0tZ2l0IGEvYXJjaC9yaXNjdi9saWIvbWVtc2V0LlMgYi9hcmNoL3Jpc2N2 L2xpYi9tZW1zZXQuUwo+IGluZGV4IDM0YzUzNjBjNjcwNS4uMDk2N2JkZjg2YmQ2IDEwMDY0NAo+ IC0tLSBhL2FyY2gvcmlzY3YvbGliL21lbXNldC5TCj4gKysrIGIvYXJjaC9yaXNjdi9saWIvbWVt c2V0LlMKPiBAQCAtMTA1LDkgKzEwNSwzNiBAQCBXRUFLKG1lbXNldCkKPiAgICAgICAgIGJlcXog YTIsIDZmCj4gICAgICAgICBhZGQgYTMsIHQwLCBhMgo+ICA1Ogo+IC0Jc2IgYTEsIDAodDApCj4g LQlhZGRpIHQwLCB0MCwgMQo+IC0JYmx0dSB0MCwgYTMsIDViCj4gKyAgICAgICAgc2IgYTEsIDAo dDApCj4gKyAgICAgICAgc2IgYTEsIC0xKGEzKQo+ICsgICAgICAgIGxpIGE0LCAyCj4gKyAgICAg ICAgYmdldSBhNCwgYTIsIDZmCj4gKwo+ICsgICAgICAgIHNiIGExLCAxKHQwKQo+ICsgICAgICAg IHNiIGExLCAyKHQwKQo+ICsgICAgICAgIHNiIGExLCAtMihhMykKPiArICAgICAgICBzYiBhMSwg LTMoYTMpCj4gKyAgICAgICAgbGkgYTQsIDYKPiArICAgICAgICBiZ2V1IGE0LCBhMiwgNmYKPiAr Cj4gKyAgICAgICAgc2IgYTEsIDModDApCj4gKyAgICAgICAgc2IgYTEsIC00KGEzKQo+ICsgICAg ICAgIGxpIGE0LCA4Cj4gKyAgICAgICAgYmdldSBhNCwgYTIsIDZmCgpXaHkgaXMgdGhpcyBjaGVj ayBoZXJlPwoKPiArCj4gKyAgICAgICAgc2IgYTEsIDQodDApCj4gKyAgICAgICAgc2IgYTEsIC01 KGEzKQo+ICsgICAgICAgIGxpIGE0LCAxMAo+ICsgICAgICAgIGJnZXUgYTQsIGEyLCA2ZgoKQW5k IHRoaXMgb25lPwoKQWZ0ZXIgdGhlIGNoZWNrIG9mIGEyIGFnYWluc3QgNiBhYm92ZSB3ZSBrbm93 IHRoYXQgb2Zmc2V0cyA2KHQwKQphbmQgLTcoYTMpIGFyZSBzYWZlLiBBcmUgd2UgdHJ5aW5nIHRv IGF2b2lkIHRvbyBtYXkgcmVkdW5kYW50CnN0b3JlcyB3aXRoIHRoZXNlIGFkZGl0aW9uYWwgY2hl Y2tzPwoKPiArCj4gKyAgICAgICAgc2IgYTEsIDUodDApCj4gKyAgICAgICAgc2IgYTEsIDYodDAp Cj4gKyAgICAgICAgc2IgYTEsIC02KGEzKQo+ICsgICAgICAgIHNiIGExLCAtNyhhMykKPiArICAg ICAgICBsaSBhNCwgMTQKPiArICAgICAgICBiZ2V1IGE0LCBhMiwgNmYKPiArCj4gKyAgICAgICAg c2IgYTEsIDcodDApCj4gIDY6Cj4gICAgCXJldAo+ICBFTkQoX19tZW1zZXQpCj4gLS0KPiAyLjMz LjAKClRoZSBpbmRlbnQgb2YgdGhlIG5ldyBjb2RlIGRvZXNuJ3QgbWF0Y2ggdGhlIG9sZC4gSSdk IHByZWZlciB3ZSBjbGVhbnVwCnRoZSBvbGQgZmlyc3QsIHRob3VnaC4gUGxlYXNlIHJlcG9zdCBb MV0gYXMgYSBmaXJzdCBwYXRjaCBvZiBhIHR3by1wYXRjaApwYXRjaCBzZXJpZXMsIHdoZXJlIHlv dXJzIGlzIHRoZSBzZWNvbmQgYW5kIG1hdGNoZXMgdGhlIG5ldyBmb3JtYXR0aW5nCnRoYXQgWzFd IHVzZXMuCgpbMV0gaHR0cHM6Ly9sb3JlLmtlcm5lbC5vcmcvYWxsLzIwMjIxMDI3MTMwMjQ3LjMx NjM0LTgtYWpvbmVzQHZlbnRhbmFtaWNyby5jb20vCgpUaGFua3MsCkRyZXcKCk9uIEZyaSwgTWF5 IDA1LCAyMDIzIGF0IDA0OjQzOjQ0UE0gKzA4MDAsIOW8oOmjniB3cm90ZToKPiAKCgo+IF9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gbGludXgtcmlzY3Yg bWFpbGluZyBsaXN0Cj4gbGludXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwo+IGh0dHA6Ly9s aXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcmlzY3YKCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWls aW5nIGxpc3QKbGludXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5m cmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg==