sgi-gru: add macros for using the UV hub to send interrupts
Add macros for using the UV hub to send interrupts. Change the IPI code to use these macros. These macros will also be used in additional patches that will follow. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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