linux-kernel - Re: [PATCH v11 2/5] x86: kdump: move reserve_crashkernel_low() into crash

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Date:   Thu, 6 Aug 2020 15:36:27 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Chen Zhou <chenzhou10@...wei.com>
Cc:     catalin.marinas@....com, will@...nel.org, james.morse@....com,
        tglx@...utronix.de, mingo@...hat.com, dyoung@...hat.com,
        bhe@...hat.com, corbet@....net, John.P.donnelly@...cle.com,
        prabhakar.pkin@...il.com, bhsharma@...hat.com, horms@...ge.net.au,
        robh+dt@...nel.org, arnd@...db.de, nsaenzjulienne@...e.de,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kexec@...ts.infradead.org, linux-doc@...r.kernel.org,
        guohanjun@...wei.com, xiexiuqi@...wei.com, huawei.libin@...wei.com,
        wangkefeng.wang@...wei.com
Subject: Re: [PATCH v11 2/5] x86: kdump: move reserve_crashkernel_low() into
 crash_core.c


* Chen Zhou <chenzhou10@...wei.com> wrote:

> In preparation for supporting reserve_crashkernel_low in arm64 as
> x86_64 does, move reserve_crashkernel_low() into kernel/crash_core.c.
> 
> BTW, move x86_64 CRASH_ALIGN to 2M suggested by Dave. CONFIG_PHYSICAL_ALIGN
> can be selected from 2M to 16M, move to the same as arm64.
> 
> Signed-off-by: Chen Zhou <chenzhou10@...wei.com>
> ---
>  arch/x86/include/asm/kexec.h | 24 ++++++++++
>  arch/x86/kernel/setup.c      | 86 +++---------------------------------
>  include/linux/crash_core.h   |  3 ++
>  include/linux/kexec.h        |  2 -
>  kernel/crash_core.c          | 74 +++++++++++++++++++++++++++++++
>  kernel/kexec_core.c          | 17 -------
>  6 files changed, 107 insertions(+), 99 deletions(-)

Since the changes are centered around arm64, I suppose the arm64 tree 
will carry this patchset?

Assuming that this is a 100% invariant moving of code that doesn't 
regress on x86:

  Acked-by: Ingo Molnar <mingo@...nel.org>

Thanks,

	Ingo