linux-kernel - Re: [PATCH v17 05/10] x86: kdump: move reserve_crashkernel[_low]() into crash

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Message-ID: <097c6a8c-3b96-19b4-2bb9-bf2dcb4a6109@huawei.com>
Date:   Tue, 14 Dec 2021 20:38:41 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Baoquan He <bhe@...hat.com>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        <x86@...nel.org>, "H . Peter Anvin" <hpa@...or.com>,
        <linux-kernel@...r.kernel.org>, Dave Young <dyoung@...hat.com>,
        Vivek Goyal <vgoyal@...hat.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        <kexec@...ts.infradead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        <devicetree@...r.kernel.org>, "Jonathan Corbet" <corbet@....net>,
        <linux-doc@...r.kernel.org>, Randy Dunlap <rdunlap@...radead.org>,
        Feng Zhou <zhoufeng.zf@...edance.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Chen Zhou <dingguo.cz@...group.com>
Subject: Re: [PATCH v17 05/10] x86: kdump: move reserve_crashkernel[_low]()
 into crash_core.c



On 2021/12/14 18:45, Baoquan He wrote:
>> +		/* User specifies base address explicitly. */
> If you plan to repost, please take above sentence off either. Then we
> can say this patch is only doing code moving.
> 
>> +		unsigned long long start;
>> +
> OK, I can see that this patch is only moving code, and introducing
> CONFIG_ARCH_WANT_RESERVE_CRASH_KERNEL to wrap them appropriately, no
> extra functionality change added or removed, except of this place.
> An alignment checking is added for the user specified base address.
> I love this checking. While I have to say it will be more perfect if
> it's put in another small patch, that will be look much better from
> patch splitting and reviewing point of view.

Good eye. I will put it in a new patch.

> 
> This whole patch looks great to me, thanks for the effort.
> 
>