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 923E6C07E8E for ; Mon, 22 Apr 2024 15:30:55 +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:Cc:To:In-Reply-To:References:Date: Message-Id:From:Subject:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WOXCdaq/J5DN4R60D3UI2Ey72YVV0J79TWMtkN+fK5w=; b=KXYB5qB2QE7Kja PK2gvNOBgt+ir8CcmAEA+pBi1sJcHHPb6A2FtPprdInrVP6WP6muIUnC06IDfPOJNkwJLPUyQMmgY edUD+mYSV6sr9S/FH3maQ05wijm2xtfVROxKgwwxDqZOkDA/zkxvtsu6h+a4G9KqvEoFZ8fSPmcab heawmVtUkBbPDS+3LCdblzZZF2kPDNyX7vi9lc5NLPr3vCYihTtEIniw2Sm6t0nwuLMSW+ql1qQ5t 1xac6NlMtybpTYIdwQw7i/9tHfjlZPgo+4FVGfUrKnKhUk8XdxYXV3yvapkwS2BbtbPy9a1LAZXE1 RGw/31+i3uD2orVA+o2g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1ryvcp-0000000E7fP-0pgv; Mon, 22 Apr 2024 15:30:35 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1ryvcl-0000000E7dt-33nL for linux-arm-kernel@lists.infradead.org; Mon, 22 Apr 2024 15:30:33 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 08430CE0B97; Mon, 22 Apr 2024 15:30:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 10284C32783; Mon, 22 Apr 2024 15:30:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713799828; bh=DRpsO/qGwpqtZ9SV8MS4vlbsva1SoUOzG48RE15A66c=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=I9jd0kXnqUj3o/guOVp7OnJKoWVTeteiOD6qcYTnTBQdQ6+raRGu/f8wfgILAygl1 wXFwt4bQdMXbeHQk/qHV56Ta1tuLkDo+//o+YB01qVWFA+JlFvaD1c1wTiKFVTBQqT rDgzPq0Lgp0LfH7qod7BhJGqi8zUlfjwYN+jonUN9JQFwASZSWdq5p0QaejENMfdph NMpmW93e/zpWgH2/REJ7IzkqCSYNO9+3TLkfKVqLo7yvXMm/llciYTCmcyMVBK8Bde +y18nhLemaH5wH3xxr+9VGOfgmArZgXAsQzjpSXI/c96OSf2rb5DGnrt73G7rZtxGO Ss0PKgNME1VpA== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 05B91C4339F; Mon, 22 Apr 2024 15:30:28 +0000 (UTC) MIME-Version: 1.0 Subject: Re: [PATCH bpf] arm32, bpf: reimplement sign-extension mov instruction From: patchwork-bot+netdevbpf@kernel.org Message-Id: <171379982802.28518.11875355744954376996.git-patchwork-notify@kernel.org> Date: Mon, 22 Apr 2024 15:30:28 +0000 References: <20240419182832.27707-1-puranjay@kernel.org> In-Reply-To: <20240419182832.27707-1-puranjay@kernel.org> To: Puranjay Mohan Cc: 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@armlinux.org.uk, rmk+kernel@armlinux.org.uk, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, puranjay12@gmail.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240422_083031_996308_B1DB14DC X-CRM114-Status: GOOD ( 12.69 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello: This patch was applied to bpf/bpf.git (master) by Daniel Borkmann : On Fri, 19 Apr 2024 18:28:32 +0000 you wrote: > The current implementation of the mov instruction with sign extension > has the following problems: > > 1. It clobbers the source register if it is not stacked because it > sign extends the source and then moves it to the destination. > 2. If the dst_reg is stacked, the current code doesn't write the value > back in case of 64-bit mov. > 3. There is room for improvement by emitting fewer instructions. > > [...] Here is the summary with links: - [bpf] arm32, bpf: reimplement sign-extension mov instruction https://git.kernel.org/bpf/bpf/c/c6f48506ba30 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel