From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sgoci-sdnproxy-4.icoremail.net (sgoci-sdnproxy-4.icoremail.net [129.150.39.64]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 92EC423D7F2 for ; Thu, 18 Sep 2025 03:00:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=129.150.39.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758164417; cv=none; b=FobL71gHpMIro7c6+KPx+Dubjmu1vYaSh2AJsV6gWq3yo1mxF1hTnAipp9pw2HzKNc83UvZ5dny6yCUU2wbFpISFhDDJ+GQFz79fFtLE/xEaK9S6eXVsnuSMPh4WRZ0Cww+QeonYesWpPvQ3ODBg8bFA8f0W/M4Fd/DHwlF9xjI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758164417; c=relaxed/simple; bh=JbfbSy6QkKP4khdg5TxVNXJ11BySl0qlThcEVKdIqTs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CjEYOZlAZjWp5CLwmBKkW1D0KohDlbRul/eS6xylYtKp6K7YX0IimR1wlvS1dAKEfVD9W/3usga6SL6fkX3tft7jR4a3qa9LD0wd+bJ6eCScz7kiEBbzXXDldiAHAuhx6giPYJbAxkN2TLZwZ+pVyUvVHRv8sk+lwwQpBRkdM/Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=phytium.com.cn; spf=pass smtp.mailfrom=phytium.com.cn; arc=none smtp.client-ip=129.150.39.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=phytium.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=phytium.com.cn Received: from prodtpl.icoremail.net (unknown [10.12.1.20]) by hzbj-icmmx-6 (Coremail) with SMTP id AQAAfwCnPWGpdctoKlxXBw--.58550S2; Thu, 18 Sep 2025 10:59:53 +0800 (CST) Received: from localhost (unknown [123.150.8.50]) by mail (Coremail) with SMTP id AQAAfwAXe+ijdctoeTQUAA--.17109S2; Thu, 18 Sep 2025 10:59:48 +0800 (CST) Date: Thu, 18 Sep 2025 10:59:29 +0800 From: Yuquan Wang To: Jonathan Cameron Cc: fan.ni@samsung.com, mst@redhat.com, marcel.apfelbaum@gmail.com, rad@semihalf.com, peter.maydell@linaro.org, leif.lindholm@oss.qualcomm.com, graf@amazon.com, claudio.fontana@huawei.com, philmd@linaro.org, richard.henderson@linaro.org, chenbaozi@phytium.com.cn, qemu-devel@nongnu.org, linux-cxl@vger.kernel.org, ligen@phytium.com.cn Subject: Re: [RFC QEMU PATCH v4 2/2] pci-host/cxl: Support creation of a new CXL Host Bridge Message-ID: References: <20250807105910.240070-1-wangyuquan1236@phytium.com.cn> <20250807105910.240070-3-wangyuquan1236@phytium.com.cn> <20250917173742.000078cc@huawei.com> Precedence: bulk X-Mailing-List: linux-cxl@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: <20250917173742.000078cc@huawei.com> X-CM-TRANSID:AQAAfwAXe+ijdctoeTQUAA--.17109S2 X-CM-SenderInfo: 5zdqw5pxtxt0arstlqxsk13x1xpou0fpof0/1tbiAQAQAWjJu34I-gAwsy Authentication-Results: hzbj-icmmx-6; spf=neutral smtp.mail=wangyuquan 1236@phytium.com.cn; X-Coremail-Antispam: 1Uk129KBjvJXoW7Cry7Kw4DKry8tFy3GF45KFg_yoW8Gry3pF yIgF15CFWkJrW7G3y8ZwsxZ3WrCrZ5JF45Jry5KF98Z3Z8A3sIgrsrKa1a9a4DXr18Xw1v ya17Z3s5uan8ZrDanT9S1TB71UUUUjUqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj DUYxn0WfASr-VFAU7a7-sFnT9fnUUIcSsGvfJ3UbIYCTnIWIevJa73UjIFyTuYvj4RJUUU UUUUU Wed, Sep 17, 2025 at 05:37:42PM +0100, Jonathan Cameron wrote: > On Thu, 7 Aug 2025 18:59:10 +0800 > wangyuquan wrote: > > > From: Yuquan Wang > > > > Define a new CXL host bridge type (TYPE_CXL_HOST). This is an > > independent CXL host bridge which combined GPEX features (ECAM, MMIO > > windows and irq) and CXL Host Bridge Component Registers (CHBCR). > > > > The root bus path of CXL_HOST is "0001:00", that would not affect the > > original PCIe host topology on some platforms. In the previous, the > > pxb-cxl-host with any CXL root ports and CXL endpoint devices would > > share the resources (like BDF, MMIO space) of the original pcie > > domain, but it would cause some platforms like sbsa-ref are unable to > > support the original number of PCIe devices. The new type provides a > > solution to resolve the problem. > > > > Signed-off-by: Yuquan Wang > > Likewise, this looks fine to me. If the SBSA maintainers > are happy with the approach and PCI folk think the more generic parts > look fine then would be good to move this forwards. > > Acked-by: Jonathan Cameron > Thanks for reviewing! I am very much looking forward to the maintainer of PCI continuing to review this patch and providing relevant comments. Yuquan