linux-hardening - Re: [PATCH net-next v4 00/14] Add PPE driver for Qualcomm IPQ9574 SoC

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Message-ID: <27cf4b47-2ded-4a37-9717-1ede521d8639@quicinc.com>
Date: Thu, 15 May 2025 22:19:11 +0800
From: Luo Jie <quic_luoj@...cinc.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: Andrew Lunn <andrew+netdev@...n.ch>,
        "David S. Miller"
	<davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
	<pabeni@...hat.com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Lei Wei
	<quic_leiwei@...cinc.com>,
        Suruchi Agarwal <quic_suruchia@...cinc.com>,
        Pavithra R <quic_pavir@...cinc.com>, Simon Horman <horms@...nel.org>,
        Jonathan Corbet <corbet@....net>, Kees Cook <kees@...nel.org>,
        "Gustavo A. R.
 Silva" <gustavoars@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        <linux-arm-msm@...r.kernel.org>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
        <quic_kkumarcs@...cinc.com>, <quic_linchen@...cinc.com>,
        <srinivas.kandagatla@...aro.org>, <bartosz.golaszewski@...aro.org>,
        <john@...ozen.org>
Subject: Re: [PATCH net-next v4 00/14] Add PPE driver for Qualcomm IPQ9574 SoC



On 5/15/2025 10:58 AM, Jakub Kicinski wrote:
> On Tue, 13 May 2025 17:58:20 +0800 Luo Jie wrote:
>> The PPE (packet process engine) hardware block is available in Qualcomm
>> IPQ chipsets that support PPE architecture, such as IPQ9574 and IPQ5332.
>> The PPE in the IPQ9574 SoC includes six ethernet ports (6 GMAC and 6
>> XGMAC), which are used to connect with external PHY devices by PCS. The
>> PPE also includes packet processing offload capabilities for various
>> networking functions such as route and bridge flows, VLANs, different
>> tunnel protocols and VPN. It also includes an L2 switch function for
>> bridging packets among the 6 ethernet ports and the CPU port. The CPU
>> port enables packet transfer between the ethernet ports and the ARM
>> cores in the SoC, using the ethernet DMA.
> 
> Please make sure the code builds cleanly with W=1.

Yes, the patch series is successfully built with W=1 for ARM and ARM64
on my local workspace.
make CROSS_COMPILE=arm-linux-gnueabi- ARCH=arm W=1
make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 W=1

However, from the patchwork result as below, it seems the dependent
patch series (for FIELD_MODIFY() macro) did not get picked to validate
the PPE driver patch series together. This dependency is mentioned in
the cover letter. Could you advise what could be wrong here, which is
preventing the dependent patch to be picked up? Thanks.

https://netdev.bots.linux.dev/static/nipa/962354/14086331/build_32bit/stderr