linux-kernel - Re: [PATCH v5 0/5] kdump: crashkernel reservation from CMA

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Message-ID: <airxp44zdyxskfwrhhveis7gd2vsz5m4f3ipidsghi2x55h64c@s37v5rkuoega>
Date: Wed, 20 Aug 2025 08:46:54 -0700
From: Breno Leitao <leitao@...ian.org>
To: Jiri Bohac <jbohac@...e.cz>
Cc: Baoquan He <bhe@...hat.com>, Vivek Goyal <vgoyal@...hat.com>, 
	Dave Young <dyoung@...hat.com>, kexec@...ts.infradead.org, akpm@...ux-foundation.org, 
	Philipp Rudo <prudo@...hat.com>, Donald Dutile <ddutile@...hat.com>, 
	Pingfan Liu <piliu@...hat.com>, Tao Liu <ltao@...hat.com>, linux-kernel@...r.kernel.org, 
	David Hildenbrand <dhildenb@...hat.com>, Michal Hocko <mhocko@...e.cz>
Subject: Re: [PATCH v5 0/5] kdump: crashkernel reservation from CMA

Hello Jiri,

On Thu, Jun 12, 2025 at 12:11:19PM +0200, Jiri Bohac wrote:
> The fifth patch enables the functionality for x86 as a proof of
> concept. There are just three things every arch needs to do:
> - call reserve_crashkernel_cma()
> - include the CMA-reserved ranges in the physical memory map
> - exclude the CMA-reserved ranges from the memory available
>   through /proc/vmcore by excluding them from the vmcoreinfo
>   PT_LOAD ranges.

First, thank you for making this change; it’s very helpful.
I haven’t come across anything regarding arm64 support. Is this on
anyone’s to-do list?

--breno