linux-kernel - Re: [PATCH v4 1/2] arm64: kdump: Provide default size when crashkernel=Y,low is not specified

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Message-ID: <Y3T9P7q8JgVV6Shq@arm.com>
Date:   Wed, 16 Nov 2022 15:09:51 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Zhen Lei <thunder.leizhen@...wei.com>
Cc:     Dave Young <dyoung@...hat.com>, Baoquan He <bhe@...hat.com>,
        Vivek Goyal <vgoyal@...hat.com>, kexec@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Feng Zhou <zhoufeng.zf@...edance.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Chen Zhou <dingguo.cz@...group.com>,
        John Donnelly <John.p.donnelly@...cle.com>,
        Dave Kleikamp <dave.kleikamp@...cle.com>
Subject: Re: [PATCH v4 1/2] arm64: kdump: Provide default size when
 crashkernel=Y,low is not specified

On Wed, Nov 16, 2022 at 08:10:43PM +0800, Zhen Lei wrote:
> Try to allocate at least 128 MiB low memory automatically for the case
> that crashkernel=,high is explicitly specified, while crashkenrel=,low
> is omitted. This allows users to focus more on the high memory
> requirements of their business rather than the low memory requirements
> of the crash kernel booting.
> 
> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
> Acked-by: Baoquan He <bhe@...hat.com>

Reviewed-by: Catalin Marinas <catalin.marinas@....com>