Messages in this thread Patch in this message | | | From | Paul Gortmaker <> | Subject | [34-longterm 180/209] x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode | Date | Thu, 14 Apr 2011 13:55:38 -0400 |
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From: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
===================================================================== | This is a commit scheduled for the next v2.6.34 longterm release. | | If you see a problem with using this for longterm, please comment.| =====================================================================
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: Paul Gortmaker <paul.gortmaker@windriver.com> --- arch/x86/kernel/apic/io_apic.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 38128cc..4a809bf 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3642,6 +3642,7 @@ 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); -- 1.7.4.4
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