[PATCH] [92/139] x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode

[Andi Kleen]

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>

commit 086e8ced65d9bcc4a8e8f1cd39b09640f2883f90 upstream.

In x2apic mode, we need to set the upper address register of the fault
handling interrupt register of the vt-d hardware. Without this
irq migration of the vt-d fault handling interrupt is broken.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
LKML-Reference: <1291225233.2648.39.camel@sbsiddha-MOBL3>
Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Acked-by: Chris Wright <chrisw@xxxxxxxxxxxx>
Tested-by: Takao Indoh <indou.takao@xxxxxxxxxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/x86/kernel/apic/io_apic.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6.35.y/arch/x86/kernel/apic/io_apic.c
===================================================================
--- linux-2.6.35.y.orig/arch/x86/kernel/apic/io_apic.c
+++ linux-2.6.35.y/arch/x86/kernel/apic/io_apic.c
@@ -3626,6 +3626,7 @@ static int dmar_msi_set_affinity(unsigne
 	msg.data |= MSI_DATA_VECTOR(cfg->vector);
 	msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK;
 	msg.address_lo |= MSI_ADDR_DEST_ID(dest);
+	msg.address_hi = MSI_ADDR_BASE_HI | MSI_ADDR_EXT_DEST_ID(dest);
 
 	dmar_msi_write(irq, &msg);
 
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