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Date:   Fri, 14 Apr 2023 17:49:56 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     linux-kernel@...r.kernel.org, horms@...nel.org,
        thunder.leizhen@...wei.com, John.p.donnelly@...cle.com,
        will@...nel.org, kexec@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5] arm64: kdump: simplify the reservation behaviour of
 crashkernel=,high

On 04/13/23 at 03:30pm, Catalin Marinas wrote:
> On Thu, Apr 13, 2023 at 03:45:50PM +0800, Baoquan He wrote:
> > I am OK with this version, or the version with min(SZ_4G,
> > arm64_dma_phys_limit), or v4. Please help point out if I got your idea
> > correctly. Thanks a lot.
> 
> I think we should stick to this patch. The disabling of the ZONE_DMA(32)
> is fairly specialised and you are right that we should not introduce an
> artificial 4GB crashkernel boundary on such systems. The slight
> confusion may be that ,high triggers a search above 4GB where there's
> not such boundary but this would match the documentation anyway.

OK, sounds good to me. Thanks a lot for all those careful reviewing and
helpful suggestions.

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