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Date:   Fri, 19 Feb 2021 10:08:33 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Hanjun Guo <guohanjun@huawei.com>
Cc:     Scott Branden <scott.branden@broadcom.com>,
        BCM Kernel Feedback <bcm-kernel-feedback-list@broadcom.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        PEIXIN HOU <PEIXIN.HOU@huawei.com>,
        Yanjin <yanjin.yan@huawei.com>,
        "Zhangdianfang (Dianfang, OS Lab)" <zhangdianfang@huawei.com>,
        Zhaohongjiang <zhaohongjiang@huawei.com>,
        Huxinwei <huxinwei@huawei.com>
Subject: Re: 5.10 LTS Kernel: 2 or 6 years?
Message-ID: <YC+AEcuXhPXXtmRB@kroah.com>
References: <ef30af4d-2081-305d-cd63-cb74da819a6d@broadcom.com>
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 <595affb4-36e8-0a63-ebb3-a4fd0e3c243a@huawei.com>
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On Fri, Feb 19, 2021 at 04:54:24PM +0800, Hanjun Guo wrote:
> Hi Greg,
> 
> On 2021/1/26 15:29, Greg Kroah-Hartman wrote:
> [...]
> > 
> > I want to see companies _using_ the kernel, and most importantly,
> > _updating_ their devices with it, to know if it is worth to keep around
> > for longer than 2 years.  I also, hopefully, want to see how those
> > companies will help me out in the testing and maintenance of that kernel
> > version in order to make supporting it for 6 years actually possible.
> > 
> > So, are you planning on using 5.10?  Will you will be willing to help
> > out in testing the -rc releases I make to let me know if there are any
> > problems, and to help in pointing out and backporting any specific
> > patches that your platforms need for that kernel release?
> 
> We(Huawei) are willing to commit resources to help out in testing the
> stable -rc releases, and to help to backport patches for stable kernels.

Wonderful!

> 5.10 stable kernel will be used for openEuler [1] kernel and also inside
> Huawei. From customer's feedback, it's very important to see the stable
> kernel we used to be maintained for 6 years in the community, and we
> will use 5.10 kernel for at least 6 years, so we are willing to help
> you and help ourselves :)
> 
> In specific, we will start from the testing work, using HULK robot
> (reports lots of bugs to mainline kernel) testing framework to test
> compile, reboot, functional testing, and will extend to basic
> performance regression testing in the future.

Great!  Do you all need an email notification when the -rc releases come
out for the stable trees, or can you trigger off of the -rc stable git
tree?  Different CI systems work in different ways :)

And if you can reply to the -rc release emails with a "Tested-by:" tag,
I will be glad to add that to the release commit when that happens to
show that you all have tested the release.

> And we will start from ARM64 and X86 architecture first, and then extend
> to other platforms.

That's a good start, the useful ones :)

> For patch backporting, will send the bugfix patches (from mainline)
> we spotted, but I think this work may not doing in regular but will
> be triggered as needed.

That's fine, it is not something that happens at a regular interval.

> Does this sound good to you?

Yes it does, thank you so much.

greg k-h