Re: [PATCH v17 05/10] x86: kdump: move reserve_crashkernel[_low]() into crash_core.c

Borislav Petkov
2021-12-16T11:17:14Z

On Fri, Dec 10, 2021 at 02:55:28PM +0800, Zhen Lei wrote:
> + * reserve_crashkernel() - reserves memory for crash kernel
> + *
> + * This function reserves memory area given in "crashkernel=" kernel command
> + * line parameter. The memory reserved is used by dump capture kernel when
> + * primary kernel is crashing.
> + */
> +void __init reserve_crashkernel(void)

As I've already alluded to in another mail, ontop of this there should
be a patch or multiple patches which clean this up more and perhaps even
split it into separate functions doing stuff in this order:

1. Parse all crashkernel= cmdline options

2. Do all crash_base, crash_size etc checks

3. Do the memory reservations

And all that supplied with comments explaining why stuff is being done.

This set of functions is a mess and there's no better time for cleaning
it up and documenting it properly than when you move it to generic code.

Thx.

--
Regards/Gruss,
Boris.