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Date:   Wed, 7 Dec 2022 21:57:48 +0800
From:   Baoquan He <bhe@redhat.com>
To:     Borislav Petkov <bp@alien8.de>
Cc:     Eric DeVolder <eric.devolder@oracle.com>,
        linux-kernel@vger.kernel.org, x86@kernel.org,
        kexec@lists.infradead.org, ebiederm@xmission.com,
        dyoung@redhat.com, vgoyal@redhat.com, tglx@linutronix.de,
        mingo@redhat.com, dave.hansen@linux.intel.com, hpa@zytor.com,
        nramas@linux.microsoft.com, thomas.lendacky@amd.com,
        robh@kernel.org, efault@gmx.de, rppt@kernel.org, david@redhat.com,
        sourabhjain@linux.ibm.com, konrad.wilk@oracle.com,
        boris.ostrovsky@oracle.com
Subject: Re: [PATCH v14 3/7] crash: add generic infrastructure for crash
 hotplug support
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On 12/07/22 at 01:42pm, Borislav Petkov wrote:
> On Wed, Dec 07, 2022 at 08:36:13PM +0800, Baoquan He wrote:
> > Below is my last reply to Eric about my thinking on this.
> 
> Yes, I saw that.
> 
> So think about it: if a CONFIG_ item is not present, what does that mean
> for the code which is enclosed around it?

Ignored by compiler.

I thought we usually need to introduce the kernel config option, then
add code related to it, so that is a wrong idea. It would be helpful to
tell this somewhere in document.