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Subject[patch 1/1] x86, UV: uv_hub_send_ipi Needs to set DELIVERY_MODE=4 for vector=NMI_VECTOR.
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@elte.hu>
To: tglx@linutronix.de
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Jack Steiner <steiner@sgi.com>
Cc: linux-kernel@vger.kernel.org
Cc: stable@kernel.org
Cc: Martin Hicks <mort@sgi.com>

---
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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