From: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Date: Wed, 1 Dec 2010 17:40:32 +0000 (-0800)
Subject: x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode
X-Git-Tag: v2.6.33.8~251
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0b480c14fdaa8d8113daf586ba351ae036934bbb;p=karo-tx-linux.git

x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode

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@jp.fujitsu.com>
LKML-Reference: <1291225233.2648.39.camel@sbsiddha-MOBL3>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Tested-by: Takao Indoh <indou.takao@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index aa2909b077fd..974faf96026d 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3636,6 +3636,7 @@ static int dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
 	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);