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 F2C10C05027 for ; Wed, 1 Feb 2023 13:31:46 +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:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=K2LsTZEdJvNV0WXeP8yMcQNBbXtweAdR3lTBXaw7Rw8=; b=LyBiYCWZ1huMbb ugI38Fm284NOgSu1v89rmP1cp4i7RLZ255uVcc527p8/CnhKwEoGlZMb91TdBM6Yy8maAXYz+GAov k9aWskv0eYls1RFGP5VyUymx46DGmoeZr6+CuyRnK8oh02ygNgdavfLtGmurnOd3ZE5hCJLJ9rkOW gYkczjht52mbe/V1UjM07nqvoqdgyXh0jcJALCc1+dj0Wf9hkg4wp47V/iubf/OSICFY97PGybRhn IQOop6F8VIOjY+JN2Da7MTUdXeirIDdaYmm96eTtew4ASbjGsvSP945eipfzF1dVkSzgD56h2T8GE POJsy7AxLWBf9aqnmI6Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNDDA-00C50M-4U; Wed, 01 Feb 2023 13:31:40 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNDD5-00C4wR-7Y for linux-riscv@lists.infradead.org; Wed, 01 Feb 2023 13:31:38 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D32E3B82184; Wed, 1 Feb 2023 13:31:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2FD08C433D2; Wed, 1 Feb 2023 13:31:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675258292; bh=kd4WPoU9evsMcNwChABWzHebzvoWpWd1TGsGdrEabso=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=dphgVWlyyQ9/+CiOzWhauSG/G8ZtT2bbsdsmOzFhqOnHb6+r2MLYtyx6yXq5sbogI qdMdIWx1dIhz23KxahTP765pqEi05kH8ELR2PsiHqRyFSqWh3iwaLO3fiTj3ImGmIZ eNaIIi/Q6rpKxkMYG9wvHmLvvGG3O/gz8RLX16rT34MF5BM+0MjVd6nZDgZoAimd3y nPIPqUobUSj7Pik3DP4F8thvdpKBiEyO1FHqwH6lQ/O+ffU9Y3Syf6LTsGAZfritNX YlkBJ2OjengnI3qRZdB55OrLXp6OcXBvgJ+mcWTaUxgpW41dluwldZxgMFMDs77l+5 Zv7o4R9Y5OX8A== From: =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= To: Chen Guokai , paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, rostedt@goodmis.org, mingo@redhat.com, sfr@canb.auug.org.au Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, liaochang1@huawei.com, Chen Guokai Subject: Re: [PATCH v6 09/13] riscv/kprobe: Search free registers from unused caller-saved ones In-Reply-To: <20230127130541.1250865-10-chenguokai17@mails.ucas.ac.cn> References: <20230127130541.1250865-1-chenguokai17@mails.ucas.ac.cn> <20230127130541.1250865-10-chenguokai17@mails.ucas.ac.cn> Date: Wed, 01 Feb 2023 14:31:30 +0100 Message-ID: <87pmattsul.fsf@all.your.base.are.belong.to.us> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230201_053135_457599_68C64456 X-CRM114-Status: UNSURE ( 6.82 ) X-CRM114-Notice: Please train this message. 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 Q2hlbiBHdW9rYWkgPGNoZW5ndW9rYWkxN0BtYWlscy51Y2FzLmFjLmNuPiB3cml0ZXM6Cgo+IFRo aXMgcGF0Y2ggZnVydGhlciBhbGxvd3Mgb3B0cHJvYmUgdG8gdXNlIGNhbGxlci1zYXZlZCByZWdp c3RlcnMgdGhhdAo+IGlzIG5vdCB1c2VkIGFjcm9zcyB0aGUgZnVuY3Rpb24gYmVpbmcgb3B0aW1p emVkIGFzIGZyZWUgcmVnaXN0ZXJzLgo+Cj4gU2lnbmVkLW9mZi1ieTogQ2hlbiBHdW9rYWkgPGNo ZW5ndW9rYWkxN0BtYWlscy51Y2FzLmFjLmNuPgo+IENvLWRldmVsb3BlZC1ieTogTGlhbyBDaGFu ZyA8bGlhb2NoYW5nMUBodWF3ZWkuY29tPgo+IFNpZ25lZC1vZmYtYnk6IExpYW8gQ2hhbmcgPGxp YW9jaGFuZzFAaHVhd2VpLmNvbT4KPiBSZXBvcnRlZC1ieTogQmrDtnJuIFTDtnBlbCA8Ympvcm5A a2VybmVsLm9yZz4KClJlcG9ydGVkLWJ5OiBzaG91bGQgYmUgdXNlZCBmb3IgZml4ZXMuIFBsZWFz ZSBjaGFuZ2UgdG8gU3VnZ2VzdGVkLWJ5OiwKb3Igc2ltcGx5IHJlbW92ZS4KCgpCasO2cm4KCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2 IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0 cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcmlzY3YK 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36F96C636CD for ; Wed, 1 Feb 2023 13:32:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232470AbjBANcv (ORCPT ); Wed, 1 Feb 2023 08:32:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232418AbjBANcb (ORCPT ); Wed, 1 Feb 2023 08:32:31 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A0C565F15 for ; Wed, 1 Feb 2023 05:31:58 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1760E6179C for ; Wed, 1 Feb 2023 13:31:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2FD08C433D2; Wed, 1 Feb 2023 13:31:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675258292; bh=kd4WPoU9evsMcNwChABWzHebzvoWpWd1TGsGdrEabso=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=dphgVWlyyQ9/+CiOzWhauSG/G8ZtT2bbsdsmOzFhqOnHb6+r2MLYtyx6yXq5sbogI qdMdIWx1dIhz23KxahTP765pqEi05kH8ELR2PsiHqRyFSqWh3iwaLO3fiTj3ImGmIZ eNaIIi/Q6rpKxkMYG9wvHmLvvGG3O/gz8RLX16rT34MF5BM+0MjVd6nZDgZoAimd3y nPIPqUobUSj7Pik3DP4F8thvdpKBiEyO1FHqwH6lQ/O+ffU9Y3Syf6LTsGAZfritNX YlkBJ2OjengnI3qRZdB55OrLXp6OcXBvgJ+mcWTaUxgpW41dluwldZxgMFMDs77l+5 Zv7o4R9Y5OX8A== From: =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= To: Chen Guokai , paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, rostedt@goodmis.org, mingo@redhat.com, sfr@canb.auug.org.au Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, liaochang1@huawei.com, Chen Guokai Subject: Re: [PATCH v6 09/13] riscv/kprobe: Search free registers from unused caller-saved ones In-Reply-To: <20230127130541.1250865-10-chenguokai17@mails.ucas.ac.cn> References: <20230127130541.1250865-1-chenguokai17@mails.ucas.ac.cn> <20230127130541.1250865-10-chenguokai17@mails.ucas.ac.cn> Date: Wed, 01 Feb 2023 14:31:30 +0100 Message-ID: <87pmattsul.fsf@all.your.base.are.belong.to.us> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Chen Guokai writes: > This patch further allows optprobe to use caller-saved registers that > is not used across the function being optimized as free registers. > > Signed-off-by: Chen Guokai > Co-developed-by: Liao Chang > Signed-off-by: Liao Chang > Reported-by: Bj=C3=B6rn T=C3=B6pel Reported-by: should be used for fixes. Please change to Suggested-by:, or simply remove. Bj=C3=B6rn