powerpc/pseries: add definitions for new H_SIGNAL_SYS_RESET hcall

[Michael Ellerman]

On Tue, 2016-11-08 at 06:08:06 UTC, Nicholas Piggin wrote:
> This has not made its way to a PAPR release yet, but we have an hcall
> number assigned.
> 
>   H_SIGNAL_SYS_RESET = 0x380
> 
>   Syntax:
>   hcall(uint64 H_SIGNAL_SYS_RESET, /* generate a system reset NMI on   */
>                                    /* the threads indicated by target  */
>         int64 target); /* thread target selection */
>         /* -1 = target all online threads including the caller         */
>         /* -2 = target all online threads except for the caller        */
>         /* All other negative values: reserved                         */
>         /* Positive values: The thread to be targeted,                 */
>         /* obtained from the value of the "ibm,ppc-interrupt-server#s" */
>         /* property of the CPU in the OF device tree                   */
> 
>   Semantics:
>   - If the NMI handlers are not registered, terminate the partition.
>   - Invalid target: return H_Parameter.
>   - Otherwise: Generate a system reset NMI on target thread(s),
>     return H_Success.
> 
> This will be used by crash/debug code to get stuck CPUs into a known state.
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/53ce299615e587e900548eb6b384c3

cheers