linux-kernel - [PATCH 0/2] arm64: mm: fix kdump broken with ZONE

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Message-ID: <20201226033557.116251-1-chenzhou10@huawei.com>
Date:   Sat, 26 Dec 2020 11:35:55 +0800
From:   Chen Zhou <chenzhou10@...wei.com>
To:     <catalin.marinas@....com>, <will@...nel.org>
CC:     <ardb@...nel.org>, <akpm@...ux-foundation.org>, <rppt@...nel.org>,
        <nsaenzjulienne@...e.de>, <song.bao.hua@...ilicon.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <chenzhou10@...wei.com>,
        <huawei.libin@...wei.com>, <xiexiuqi@...wei.com>
Subject: [PATCH 0/2] arm64: mm: fix kdump broken with ZONE_DMA reintroduced

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

 arch/arm64/mm/init.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

-- 
2.20.1