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[31.30.173.78]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a5a17b17d10sm974132366b.198.2024.05.16.05.38.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 May 2024 05:38:29 -0700 (PDT) Date: Thu, 16 May 2024 14:38:28 +0200 From: Andrew Jones To: Xiao Wang Cc: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, luke.r.nels@gmail.com, xi.wang@gmail.com, bjorn@kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, pulehui@huawei.com, haicheng.li@intel.com, conor@kernel.org, ben.dooks@codethink.co.uk Subject: Re: [PATCH v3] riscv, bpf: Optimize zextw insn with Zba extension Message-ID: <20240516-0ec6ff4ad0e23302003be51a@orel> References: <20240516090430.493122-1-xiao.w.wang@intel.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240516090430.493122-1-xiao.w.wang@intel.com> On Thu, May 16, 2024 at 05:04:30PM GMT, Xiao Wang wrote: > The Zba extension provides add.uw insn which can be used to implement > zext.w with rs2 set as ZERO. > > Signed-off-by: Xiao Wang > --- > v3: > * Remove the Kconfig dependencies on TOOLCHAIN_HAS_ZBA and > RISCV_ALTERNATIVE. (Andrew) > v2: > * Add Zba description in the Kconfig. (Lehui) > * Reword the Kconfig help message to make it clearer. (Conor) > --- > arch/riscv/Kconfig | 12 ++++++++++++ > arch/riscv/net/bpf_jit.h | 18 ++++++++++++++++++ > 2 files changed, 30 insertions(+) > Reviewed-by: Andrew Jones 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 8A2A2C25B74 for ; Thu, 16 May 2024 12:38:44 +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=PTdAAznB4Ozh5cWBB6md2Zi+CK0Kh0/80seqvNR6vK0=; b=S3+BtaKYOK89bY 3HwOxb0NXp0NOR3xnV7Nqrv0lVarvjXzoApwekZ2V1JPURLzCZK9qP91oh6D2EOygS2Hx7aIZ9Uol GyDsf6vf3yIV/milFzLEate16OF6QLxgJNIcB73xE5tQ+8RfjPpmwQpsUoZTTrDATp0nzzcjBid6h TZGUqudwKnbatwj0eqySGY+2xfbfVnWVcTiZJUw/688GOWRMDlCmBVih0z7em/B/QRZRxnVAHI4wa j7jQMgrTsRGfdmXr1qXOYOhJRNK+DIAry9nhmr/pfuDQYXoU7f2GUWEdKSV/dxFZ6BNGwPlCU/Cmd CyLOeZt03zk+iEUH0yfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7aNX-00000004qYH-3c7W; Thu, 16 May 2024 12:38:35 +0000 Received: from mail-lf1-x12e.google.com ([2a00:1450:4864:20::12e]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7aNU-00000004qX7-3bG3 for linux-riscv@lists.infradead.org; Thu, 16 May 2024 12:38:34 +0000 Received: by mail-lf1-x12e.google.com with SMTP id 2adb3069b0e04-523b017a5c6so1135698e87.1 for ; Thu, 16 May 2024 05:38:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1715863110; x=1716467910; darn=lists.infradead.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=9iWXDNZutTCQXyK7swK+WhdATWJeoIgfasLnh7IMyXI=; b=PZRLtlNgyu1RXs/y0VgTvpV5KwspsGJmBLSspdtfOPAxjW8q4PPFydRUqGw1fyXbFl KqZImK1iJckPtYgW+PFmqh/EXCRDDIZuF/aiSZFqJ02uFLQ6Z4+Og6ncqXkpTjhJRVQs B7V6FASZp50kN+E5kVG/5lmwh3ogMQzO0rvl58l6jNWJf3Ilb5KVhrXvB44sgh0Llmog YrAWT0KaAzWwHgusEsivcdhUbAoU7p2bXGPUToJeYbKpTJ4NBAz4djq2OMUn4pf3E4oX 7eQwbZDgt0q9ha2idgW65AOTefqiUx2J7ahBwTrZ5qbgawljOyGQgLXQ11Nj2ycbEHG5 AwIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715863110; x=1716467910; h=in-reply-to: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=9iWXDNZutTCQXyK7swK+WhdATWJeoIgfasLnh7IMyXI=; b=C1CAem8JLefPREFZVDH6qivhiB8EMjrMn2UUeNnVZ8MXIsbU0z8DP2NvPwVg5wgXGc JOawTf2qJFG1MbBIn1VmQAE8FtPBxupGQZVLo1MpstJ/W8GngR4KR/AVuF1VV/0tYtLy 4UejY6WY9E2P8XyaYICEbgFAS6QBSrqKw0slIjWkz2OuvgObJ4osFyYmypJKxdh172hn kJtZ7hQDO8QNNfRSDUFaFvAIulMt7n9zk78kEi02o4TYzmcZoSKHl1YF/wz0eNFRdv5j Kbh+CvHfdhvNlwN1HfF2iorZH93kLLjZpODXKZXN6wR1CLdquuPTxrS3Wnci1VtSpudR Fk1Q== X-Forwarded-Encrypted: i=1; AJvYcCWtrZcVX6Lig6hUfbm4ejF4lonk5Fj9wiDAUHCoWHzKL478Go3e8qbSBYSOcacJxxtoEAevK7T1S30Wg8ItHxslzQyfvsJ5ccVr8B6t37cM X-Gm-Message-State: AOJu0Yzywh/tIQjf2ZMQhUhrKKBEA6P3CIAZlp90KMVjKSavh/OPO8mC ffmg5MC0kTnkcbF7HZW5RgqDUH0jHVQHwtGjkKcKmPKL/wUOqatAFwXGXSQ4b6g= X-Google-Smtp-Source: AGHT+IFvaxKFOv8LilzEoxtWuNaiQB4YOLRJwVRKx1QLhx9shrtK6ID4rKRb2vM0K66NfrbiVweSbA== X-Received: by 2002:a05:6512:238a:b0:51a:c7d0:9e84 with SMTP id 2adb3069b0e04-5220fc7c57bmr21204513e87.12.1715863109765; Thu, 16 May 2024 05:38:29 -0700 (PDT) Received: from localhost (cst2-173-78.cust.vodafone.cz. [31.30.173.78]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a5a17b17d10sm974132366b.198.2024.05.16.05.38.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 May 2024 05:38:29 -0700 (PDT) Date: Thu, 16 May 2024 14:38:28 +0200 From: Andrew Jones To: Xiao Wang Cc: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, luke.r.nels@gmail.com, xi.wang@gmail.com, bjorn@kernel.org, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, pulehui@huawei.com, haicheng.li@intel.com, conor@kernel.org, ben.dooks@codethink.co.uk Subject: Re: [PATCH v3] riscv, bpf: Optimize zextw insn with Zba extension Message-ID: <20240516-0ec6ff4ad0e23302003be51a@orel> References: <20240516090430.493122-1-xiao.w.wang@intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240516090430.493122-1-xiao.w.wang@intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240516_053832_920412_3023AB1F X-CRM114-Status: GOOD ( 10.59 ) 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="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Thu, May 16, 2024 at 05:04:30PM GMT, Xiao Wang wrote: > The Zba extension provides add.uw insn which can be used to implement > zext.w with rs2 set as ZERO. > > Signed-off-by: Xiao Wang > --- > v3: > * Remove the Kconfig dependencies on TOOLCHAIN_HAS_ZBA and > RISCV_ALTERNATIVE. (Andrew) > v2: > * Add Zba description in the Kconfig. (Lehui) > * Reword the Kconfig help message to make it clearer. (Conor) > --- > arch/riscv/Kconfig | 12 ++++++++++++ > arch/riscv/net/bpf_jit.h | 18 ++++++++++++++++++ > 2 files changed, 30 insertions(+) > Reviewed-by: Andrew Jones _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv