Re: [PATCH v12 7/7] x86/crash: Add x86 crash hotplug support

[Borislav Petkov]

On Fri, Oct 28, 2022 at 04:22:54PM -0500, Eric DeVolder wrote:
> /*
>  * For the kexec_file_load() syscall path, specify the maximum number of
>  * memory regions that the elfcorehdr buffer/segment can accommodate.
>  * These regions are obtained via walk_system_ram_res(); eg. the
>  * 'System RAM' entries in /proc/iomem.
>  * This value is combined with NR_CPUS and multiplied by sizeof(Elf64_Phdr)

NR_CPUS_DEFAULT

>  * to determine the final elfcorehdr memory buffer/segment size.
>  * The value 8192, for example, covers a (sparsely populated) 1TiB system
>  * consisting of 128MiB memblock size, while resulting in an elfcorehdr
>  * memory buffer/segment size under 1MiB.

... and it is a sane choice trying to accomodate both actual baremetal
and VM configurations."

Yeah, it's a good start.

Thx.

-- 
Regards/Gruss,
    Boris.

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