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Date:   Tue, 21 Feb 2023 08:30:22 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Tong Tiangen <tongtiangen@huawei.com>
Cc:     peterz@infradead.org, keescook@chromium.org,
        sethjenkins@google.com, Dave Hansen <dave.hansen@linux.intel.com>,
        bp@suse.de, stable@vger.kernel.org
Subject: Re: Consultation on backport 97e3d26b5e5f("x86/mm: Randomize per-cpu
 entry area") to stable
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References: <2b814e48-d304-e48a-e4b4-c39a10d2dbf4@huawei.com>
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On Tue, Feb 21, 2023 at 03:19:05PM +0800, Tong Tiangen wrote:
> Hi peter:
> 
> Do you have any plans to backport this patch[1] to the stable branch of the
> lower version, such as 4.19.y ?

Why?  That is a new feature for 6.2 why would it be needed to fix
anything in really old kernels?

> When I try to backport this patch to 5.10.y, I met some KASAN[2] and
> KASLR[3] related issues. Although they were finally solved, there were still
> some detours in the process.

Send your series of backports to the list for review please if they
match the stable kernel rules.

But why can't you just use the 6.2 kernel instead of something obsolete
like 4.19?

thanks,

greg k-h