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authorHan, Weidong <weidong.han@intel.com>2009-04-03 17:15:50 +0800
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-04-04 10:42:28 +0100
commitd0b03bd1c6725a3463290d7f9626e4b583518a5a (patch)
treece4ef17315c5435a8a77cd8fdb47e17193093349 /drivers/pci
parent34aaaa948e3c9dd65b27fa499c5c9e8d8f1227cf (diff)
downloadblackbird-op-linux-d0b03bd1c6725a3463290d7f9626e4b583518a5a.tar.gz
blackbird-op-linux-d0b03bd1c6725a3463290d7f9626e4b583518a5a.zip
x2apic/intr-remap: decouple interrupt remapping from x2apic
interrupt remapping must be enabled before enabling x2apic, but interrupt remapping doesn't depend on x2apic, it can be used separately. Enable interrupt remapping in init_dmars even x2apic is not supported. [dwmw2: Update Kconfig accordingly, fix build with INTR_REMAP && !X2APIC] Signed-off-by: Weidong Han <weidong.han@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/intel-iommu.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index ef5795d0396b..f3eebd2b2d72 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1947,6 +1947,15 @@ static int __init init_dmars(void)
}
}
+#ifdef CONFIG_INTR_REMAP
+ if (!intr_remapping_enabled) {
+ ret = enable_intr_remapping(0);
+ if (ret)
+ printk(KERN_ERR
+ "IOMMU: enable interrupt remapping failed\n");
+ }
+#endif
+
/*
* For each rmrr
* for each dev attached to rmrr
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