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Date:   Thu, 4 Mar 2021 14:46:02 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Jing Xiangfeng <jingxiangfeng@huawei.com>
Cc:     catalin.marinas@arm.com, will@kernel.org,
        akpm@linux-foundation.org, nsaenzjulienne@suse.de,
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        wangkefeng.wang@huawei.com
Subject: Re: [PATCH stable v5.10 0/7] arm64: Default to 32-bit wide ZONE_DMA
Message-ID: <YEDkmj6cchMPAq2h@kroah.com>
References: <20210303073319.2215839-1-jingxiangfeng@huawei.com>
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On Wed, Mar 03, 2021 at 03:33:12PM +0800, Jing Xiangfeng wrote:
> Using two distinct DMA zones turned out to be problematic. Here's an
> attempt go back to a saner default.

What problem does this solve?  How does this fit into the stable kernel
rules?

thanks,

greg k-h