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Diffstat (limited to 'drivers/iommu/intel_irq_remapping.c')
-rw-r--r--drivers/iommu/intel_irq_remapping.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index f3b8f23b5d8f..5b19b2d6ec2d 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -524,6 +524,16 @@ static int __init intel_irq_remapping_supported(void)
if (disable_irq_remap)
return 0;
+ if (irq_remap_broken) {
+ WARN_TAINT(1, TAINT_FIRMWARE_WORKAROUND,
+ "This system BIOS has enabled interrupt remapping\n"
+ "on a chipset that contains an erratum making that\n"
+ "feature unstable. To maintain system stability\n"
+ "interrupt remapping is being disabled. Please\n"
+ "contact your BIOS vendor for an update\n");
+ disable_irq_remap = 1;
+ return 0;
+ }
if (!dmar_ir_support())
return 0;