From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 31ACA606A320 for ; Tue, 27 Oct 2026 22:30:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=YdOQQ3ky; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=N2xcgAJs DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Date:Message-Id:From:Subject:Content-Transfer-Encoding:MIME-Version: Content-Type:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Unsubscribe-Post: List-Owner; bh=xuq66sDnBhsAplEkzYm7QcixWPor8L5zRdirUDF98Vs=; b=YdOQQ3ky2Hts02 wUqC4hb/eWw7XAXmYBwC33iunbFZzpfy7ZBzisPqZ0JCoa3ZVRPQBhj5o/D0oPJsxDiHEXPgeogvb qrXNHy8howBrH++vfHosvHkZAC9JtONbjjgx5STvFx0uKJ51eAUjWHRRmnrBxy6VnY7m7XtVQK5R5 VJipQLpqxEN/ZHaNmWp8bJMeouFxK1yJwyq7HHwEwe6MognQR78cUadzvZfK722iT8e3dFAqhjbhb tvUlYZioPGR+iLdETZAtU7hDQwLQU85iB35yaxKH/a8HcaJxqFl8V8iosOm58Abvr9C99Pmr1k8ib 87DT1aTDXz48f7R+6uwg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xLpgI-00000005qYs-165F; Tue, 27 Oct 2026 22:30:10 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xLpgG-00000005qYj-3SL8 for linux-arm-kernel@lists.infradead.org; Tue, 27 Oct 2026 22:30:08 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 4186A601F6; Tue, 27 Oct 2026 22:30:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E8F321F01829; Tue, 27 Oct 2026 22:30:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793140207; bh=xuq66sDnBhsAplEkzYm7QcixWPor8L5zRdirUDF98Vs=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=N2xcgAJsVvjA2GHoiyQcvdzZae2VtjCmB4UvxqHSPhnRgRBOwbvmrlS8vSBjyimZN K7ObJX/nInju5WgC+Ku08Ga/uyeu5S4ODHA5/PWHUrfU/tb5TECyrzIC6GTPiv2Nx0 0tnRq4OXP0DP2V2ULVsqAinECK5qDmannYVKExh8nFCI9OsvKOS260KSt4pUIAZvMH kP0dsojOAXad0PIdPBtwa6oif4UdvTnq52MtwFxvxmnslByR4qEFo/s1w2K4BcFffk Q/+cziWsGEY9LAPRYrpgD+meGk5FbFF6QabkkTsc5VajyhrUkOsxHBGpQeN/zCfX7A uqC7yFlb7UVGA== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id DC5943AA940C; Tue, 27 Oct 2026 22:30:06 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] net: microchip: fdma: fix DCB corruption under sustained load From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179314020569.360855.3209955034452568131.git-patchwork-notify@kernel.org> Date: Tue, 27 Oct 2026 22:30:05 +0000 References: <20261026-microchip-fdma-dcb-corruption-v1-1-36dab6caca07@microchip.com> In-Reply-To: <20261026-microchip-fdma-dcb-corruption-v1-1-36dab6caca07@microchip.com> To: Daniel Machon Cc: Steen.Hegelund@microchip.com, UNGLinuxDriver@microchip.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@kernel.org, kuba@kernel.org, pabeni@redhat.com, horatiu.vultur@microchip.com, jensemil.schulzostergaard@microchip.com, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-11.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Mon, 26 Oct 2026 14:47:05 +0100 you wrote: > __fdma_dcb_add() prepares a DCB and links it into a channel's chain by > writing its address to the NEXT_PTR of the current last DCB. The FDMA > may be processing the chain while this happens. > > Before this patch, the link is written before the new DCB's own nextptr > and info fields, so the FDMA can follow it to a DCB that hasn't been fully > prepared yet. Under sustained load this stalls the FDMA. > > [...] Here is the summary with links: - [net] net: microchip: fdma: fix DCB corruption under sustained load https://git.kernel.org/netdev/net/c/573a6d4c7a21 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html