[patch 1/1] x86, UV: uv_hub_send_ipi Needs to set DELIVERY_MODE=4 for vector=NMI_VECTOR.

[Robin Holt]

When sending a NMI_VECTOR IPI using the UV_HUB_IPI_INT register,
we need to ensure the delivery mode field of that register has NMI
delivery selected.

To: Ingo Molnar <mingo@xxxxxxx>
To: tglx@xxxxxxxxxxxxx
Signed-off-by: Robin Holt <holt@xxxxxxx>
Acked-by: Jack Steiner <steiner@xxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxx
Cc: Martin Hicks <mort@xxxxxxx>

---
 arch/x86/include/asm/uv/uv_hub.h |    6 ++++++
 1 file changed, 6 insertions(+)
Index: linux-x86/arch/x86/include/asm/uv/uv_hub.h
===================================================================
--- linux-x86.orig/arch/x86/include/asm/uv/uv_hub.h	2009-10-19 04:07:07.000000000 -0500
+++ linux-x86/arch/x86/include/asm/uv/uv_hub.h	2009-10-19 04:07:09.000000000 -0500
@@ -19,6 +19,7 @@
 #include <asm/types.h>
 #include <asm/percpu.h>
 #include <asm/uv/uv_mmrs.h>
+#include <asm/irq_vectors.h>
 
 
 /*
@@ -435,9 +436,14 @@ static inline void uv_set_cpu_scir_bits(
 static inline void uv_hub_send_ipi(int pnode, int apicid, int vector)
 {
 	unsigned long val;
+	unsigned long dmode = 0; /* Directed Delivery */
+
+	if (vector == NMI_VECTOR)
+		dmode = 4; /* NMI Delivery */
 
 	val = (1UL << UVH_IPI_INT_SEND_SHFT) |
 			((apicid) << UVH_IPI_INT_APIC_ID_SHFT) |
+			(dmode << UVH_IPI_INT_DELIVERY_MODE_SHFT) |
 			(vector << UVH_IPI_INT_VECTOR_SHFT);
 	uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
 }

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