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 0C6B3CFD317 for ; Mon, 24 Nov 2025 09:49:58 +0000 (UTC) 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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=e0Rfgj366tJxe1xsMBXGVrkz7jJATsofvCJET5b+Jts=; b=a79zhZ4hwqFoywR1JM4DqOUwQc p8goCMILOVBy8+VdoZIDHDv1uirAdRZGJLZaUrIphGLZqKPIQOoCQelgn3jc70YRosqS9A2i+Jn8l dXxxe4hFa7bVaQowieR2l6kmTPpeJLnUeFT5cQqvzp3mOiEY++9kQrKaTfzXEyiCJFssnkUhNrHcT HF3PQrzQ3SvFiZCj6fsQaeCdsaoQvHvr4cf5z3xreSvmQBOiIZyaFrmDPQUrSKMbb7YMFCb1DuD6p +WhhsOihV711pOX2/L16dzeUL+675Rqn+rKktdThUervHPCKbEuVxgCDv0J/hRpfEhlbZKMKFMO2C T6WKPGOA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vNTCl-0000000BNQE-0VNM; Mon, 24 Nov 2025 09:49:55 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vNTCi-0000000BNPW-2FWo; Mon, 24 Nov 2025 09:49:53 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 86F6443332; Mon, 24 Nov 2025 09:49:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 165A9C4CEF1; Mon, 24 Nov 2025 09:49:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763977791; bh=e0Rfgj366tJxe1xsMBXGVrkz7jJATsofvCJET5b+Jts=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=CZQpsh8tusQGHYy87IQbB12/uZyISK2efxLt05bMvy6mIeMUIC1mBpVhhUFerRFB+ 018dT15yOy/onqeQ6NsERRsh0KnxXLUt/WDGf2qYEchZoF4d36nj6pi6BzcexdSgHK 9Nj7vcHtBl7HieT4EBiuSEwooNsa6Xul+5g4gV+ZMshkEFu+BDKuaFLeJtH8clu+/O rtTTxpI+llZ3UZXD225zpleXnnVBGSqr13zMhFImf6b9YqKPkHgpxYuPcljEx3gXnB GLU1VtHBmF2V+ICTZWr/Qohw1/HQpts2pGKioMa6eKGGuvjUnBRE9DjwWJgBK8AIo7 EvWRO7s/T7T1Q== Date: Mon, 24 Nov 2025 10:49:44 +0100 From: Niklas Cassel To: Hans Zhang <18255117159@163.com> Cc: lpieralisi@kernel.org, kwilczynski@kernel.org, bhelgaas@google.com, helgaas@kernel.org, heiko@sntech.de, mani@kernel.org, yue.wang@amlogic.com, pali@kernel.org, neil.armstrong@linaro.org, robh@kernel.org, jingoohan1@gmail.com, khilman@baylibre.com, jbrunet@baylibre.com, martin.blumenstingl@googlemail.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-rockchip@lists.infradead.org Subject: Re: [PATCH v6 0/2] PCI: Configure Root Port MPS during host probing Message-ID: References: <20251104165125.174168-1-18255117159@163.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251104165125.174168-1-18255117159@163.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251124_014952_599949_DF9E87E6 X-CRM114-Status: UNSURE ( 7.66 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Nov 05, 2025 at 12:51:23AM +0800, Hans Zhang wrote: > Current PCIe initialization exhibits a key optimization gap: Root Ports > may operate with non-optimal Maximum Payload Size (MPS) settings. While > downstream device configuration is handled during bus enumeration, Root > Port MPS values inherited from firmware or hardware defaults often fail > to utilize the full capabilities supported by controller hardware. This > results in suboptimal data transfer efficiency throughout the PCIe > hierarchy. Hello PCI maintainers, Merge window is opening soon, what is the status of this series? Kind regards, Niklas