From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AFE7C22333B; Wed, 5 Nov 2025 01:30:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762306241; cv=none; b=pdYtRDpiqe2EXdX4ZDrGFrVcyL8C27ZU4CNnw5RPpvzWUibd44V6gRN08NrdBAnVwFLJRB4ZLmVUM1kStLPxV/VI20ErplcFNUu0NfPpl6ATxFOQ6IKF0DaoHHKTCWzlteXuwh3n8Aqe0rqxsNQzCcrHa52ONgFUnLFNY3Sit+Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762306241; c=relaxed/simple; bh=m9CPZcYZOOI/nQBexZwcz/64lD79NljFqckfJOXcEjc=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=ffpx1cliqJse+DMN9DYfCRTc5+8gKdQRawkqgcrDeH25Fh1FBDgjTzoy0DYv5FoFLQpBw4mdC0vQr0/5iwpWJr7F36IZeaG5gDd/+BCviLk1RLdE+aiKH+JSxt2A1PV2g6YWLaOJx4LwP7YMUQMzndMRWOwVsaomD25taFgWKNo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=I30xFna2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="I30xFna2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D69DC4CEF7; Wed, 5 Nov 2025 01:30:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762306241; bh=m9CPZcYZOOI/nQBexZwcz/64lD79NljFqckfJOXcEjc=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=I30xFna2DPSgdjczbL7e+ZdHQuM16VQfE3M3AS9DOOPrKbnTbCOp+2L223TWSl+4P WxtLNcE1fXma4eQRQWIdyLCJIfV4JeMAz97dNFc/8l4SSyQhMFdrIH0jSOd6ftWSch ZoACrXqSvGohdS/qOpw91p4KQ6PcEp80Aaw8ItAyBcvsPhSEgNRDEi0sIT8wBRItlG 1ygXwb6HyaUBxbZOVt3XlmXJZV6DcrM8LFngL/KZdTEH2yv264K22S99mHiehnd5ZO IFB9WUYhGFinU5a65kWuTfRWHlbEhlnctZl1PfYeQhOEFRSngw8Iu/QGQj2sWxe41X VsvAD+lWao6tg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3412B380AA54; Wed, 5 Nov 2025 01:30:16 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net V2] virtio_net: fix alignment for virtio_net_hdr_v1_hash From: patchwork-bot+netdevbpf@kernel.org Message-Id: <176230621499.3052151.14134188371623590372.git-patchwork-notify@kernel.org> Date: Wed, 05 Nov 2025 01:30:14 +0000 References: <20251031060551.126-1-jasowang@redhat.com> In-Reply-To: <20251031060551.126-1-jasowang@redhat.com> To: Jason Wang Cc: mst@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Fri, 31 Oct 2025 14:05:51 +0800 you wrote: > From: "Michael S. Tsirkin" > > Changing alignment of header would mean it's no longer safe to cast a > 2 byte aligned pointer between formats. Use two 16 bit fields to make > it 2 byte aligned as previously. > > This fixes the performance regression since > commit ("virtio_net: enable gso over UDP tunnel support.") as it uses > virtio_net_hdr_v1_hash_tunnel which embeds > virtio_net_hdr_v1_hash. Pktgen in guest + XDP_DROP on TAP + vhost_net > shows the TX PPS is recovered from 2.4Mpps to 4.45Mpps. > > [...] Here is the summary with links: - [net,V2] virtio_net: fix alignment for virtio_net_hdr_v1_hash https://git.kernel.org/netdev/net/c/c3838262b824 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html