[Skiboot] [PATCH v2] System reset IPI facility and Mambo implementation

[Stewart Smith]

Nicholas Piggin <npiggin at gmail.com> writes:
> Add an opal call OPAL_SIGNAL_SYSTEM_RESET which allows system reset
> exceptions to be raised on other CPUs and act as an NMI IPI. There
> is an initial simple Mambo implementation, but allowances are made
> for a more complex hardware implementation.
>
> This API is based on the POWER8 implementation from Alistair Popple.
>
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>

merged to master as of 139e32d139103fc7fcb2121146c89edb9f40c55f.

my crappy little test of the OPAL call also merged as of
dd694b530c7b2c28efcae018bca8ad7910f845d8, which I think has been about
enough to convince me to make it easier to run random tests as a
payload.

I know we're currently a bit off in having a solid P8 implementation (or
at least want to test it a little bit more), but the OPAL API itself
looks good at this point, and we should be good for including this as to
get the Linux bits upstream.

-- 
Stewart Smith
OPAL Architect, IBM.