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Date:   Wed, 20 Jan 2021 12:40:55 +0000
From:   Will Deacon <will@kernel.org>
To:     Chen Zhou <chenzhou10@huawei.com>
Cc:     catalin.marinas@arm.com, ardb@kernel.org,
        akpm@linux-foundation.org, rppt@kernel.org, nsaenzjulienne@suse.de,
        song.bao.hua@hisilicon.com, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, huawei.libin@huawei.com,
        xiexiuqi@huawei.com
Subject: Re: [PATCH 0/2] arm64: mm: fix kdump broken with ZONE_DMA
 reintroduced
Message-ID: <20210120124054.GA19504@willie-the-truck>
References: <20201226033557.116251-1-chenzhou10@huawei.com>
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On Sat, Dec 26, 2020 at 11:35:55AM +0800, Chen Zhou wrote:
> If the memory reserved for crash dump kernel falled in ZONE_DMA32,
> the devices in crash dump kernel need to use ZONE_DMA will alloc fail.
>            
> Fix this by reserving low memory in ZONE_DMA if CONFIG_ZONE_DMA is
> enabled, otherwise, reserving in ZONE_DMA32.
> 
> Patch 1 updates the comments about the ZONE_DMA.
> Patch 2 fix kdump broken.
> 
> Chen Zhou (2):
>   arm64: mm: update the comments about ZONE_DMA
>   arm64: mm: fix kdump broken with ZONE_DMA reintroduced

Please can you repost this if it is still needed after the changes that
landed in -rc4?

Will