[RFC Patch 4/6] PANIC_MCE: Introduce a new panic flag for fatal MCE, capture related information

[Eric W. Biederman]

"K.Prasad" <prasad at linux.vnet.ibm.com> writes:

> PANIC_MCE: Introduce a new panic flag for fatal MCE, capture related information
>
> Fatal machine check exceptions (caused due to hardware memory errors) will now
> result in a 'slim' coredump that captures vital information about the MCE. This
> patch introduces a new panic flag, and new parameters to *panic functions
> that can capture more information pertaining to the cause of crash.
>
> Enable a new elf-notes section to store additional information about the crash.
> For MCE, enable a new notes section that captures relevant register status
> (struct mce) to be later read during coredump analysis.

There may be a reason to pass everything struct mce through 5 layers of
code but right now it looks like it just makes everything uglier to no
real purpose.

Eric