Messages in this thread Patch in this message | | | From | Robin Holt <> | Date | Mon, 19 Oct 2009 04:18:55 -0500 | Subject | [patch 1/1] x86, UV: uv_hub_send_ipi Needs to set DELIVERY_MODE=4 for vector=NMI_VECTOR. |
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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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