linux-kernel - Re: [PATCH net-next v2 0/7] net/smc: implement SMCv2.1 virtual ISM device support

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Message-ID: <937d6964-b3c3-4ff5-b864-881d7de58bd1@linux.ibm.com>
Date:   Wed, 29 Nov 2023 13:50:54 +0100
From:   Wenjia Zhang <wenjia@...ux.ibm.com>
To:     Wen Gu <guwen@...ux.alibaba.com>, wintera@...ux.ibm.com,
        hca@...ux.ibm.com, gor@...ux.ibm.com, agordeev@...ux.ibm.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, kgraul@...ux.ibm.com, jaka@...ux.ibm.com
Cc:     borntraeger@...ux.ibm.com, svens@...ux.ibm.com,
        alibuda@...ux.alibaba.com, tonylu@...ux.alibaba.com,
        raspl@...ux.ibm.com, schnelle@...ux.ibm.com,
        linux-s390@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 0/7] net/smc: implement SMCv2.1 virtual ISM
 device support



On 24.11.23 15:42, Wen Gu wrote:
> The fourth edition of SMCv2 adds the SMC version 2.1 feature updates for
> SMC-Dv2 with virtual ISM. Virtual ISM are created and supported mainly by
> OS or hypervisor software, comparable to IBM ISM which is based on platform
> firmware or hardware.
> 
> With the introduction of virtual ISM, SMCv2.1 makes some updates:
> 
> - Introduce feature bitmask to indicate supplemental features.
> - Reserve a range of CHIDs for virtual ISM.
> - Support extended GIDs (128 bits) in CLC handshake.
> 
> So this patch set aims to implement these updates in Linux kernel. And it
> acts as the first part of SMC-D virtual ISM extension & loopback-ism [1].
> 
> [1] https://lore.kernel.org/netdev/1695568613-125057-1-git-send-email-guwen@linux.alibaba.com/
> 
> v2->v1:
> - Fix sparse complaint;
> - Rebase to the latest net-next;
> 

It looks good to me. The testing looks good as well.
If these comments are worked out, I'd like to give my Reviewed-by for 
the next version.
BTW, for the next version, you need to rebase your kernel.