[PATCH linux-next 1/3] x86, crash: don't nest CONFIG_CRASH_DUMP ifdef inside CONFIG_KEXEC_CODE ifdef scope

[Baoquan He]

On 01/29/24 at 06:27pm, Michael Kelley wrote:
> From: Baoquan He <bhe at redhat.com> Sent: Monday, January 29, 2024 5:51 AM
> > 
> > Michael pointed out that the #ifdef CONFIG_CRASH_DUMP is nested inside
> > arch/x86/xen/enlighten_hvm.c.
> 
> Did some words get left out in the above sentence?  It mentions the Xen
> case, but not the Hyper-V case.  I'm not sure what you intended.

Thanks a lot for your careful reviewing.

Yeah, I tried to list all affected file names, seems my vim editor threw
away some words. And I forgot mentioning the change in reboot.c.

I adjusted log as below according to your comments, do you think it's OK
now?

===
Michael pointed out that the #ifdef CONFIG_CRASH_DUMP is nested inside
CONFIG_KEXEC_CODE ifdef scope in some XEN, HyperV codes. 

Although the nesting works well too since CONFIG_CRASH_DUMP has
dependency on CONFIG_KEXEC_CORE, it may cause confusion because there
are places where it's not nested, and people may think it needs be nested
even though it doesn't have to.

Fix that by moving  CONFIG_CRASH_DUMP ifdeffery of codes out of
CONFIG_KEXEC_CODE ifdeffery scope.

And also put function machine_crash_shutdown() definition inside
CONFIG_CRASH_DUMP ifdef scope instead of CONFIG_KEXEC_CORE ifdef.

And also fix a building error Nathan reported as below by replacing
CONFIG_KEXEC_CORE ifdef with CONFIG_VMCORE_INFO ifdef.
......
===

Thanks
Baoquan