Re: [-mm patch] i386: enable REGPARM by default

[Andrew Morton]

Adrian Bunk <bunk@xxxxxxxxx> wrote:
>
> This patch:
> - removes the dependency of REGPARM on EXPERIMENTAL
> - let REGPARM default to y

hm, a compromise.

One other concern I have with this is that I expect -mregparm will make
kgdb (and now crashdump) less useful.  When incoming args are on the stack
you have a good chance of being able to see what their value is by walking
the stack slots.

When the incoming args are in registers I'd expect that it would be a lot
harder (or impossible) to work out their value.

Have the kdump guys thought about (or encountered) this?

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