[099/152] x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode

From: Greg KH
Date: Wed Jan 05 2011 - 19:30:54 EST

2.6.36-stable review patch. If anyone has any objections, please let us 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>
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(+)

--- a/arch/x86/kernel/apic/io_apic.c
+++ b/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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