From afcc8a40a090f7a65d3b72bac1a26fc6dbb63b10 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 26 Sep 2012 12:44:36 +0200 Subject: x86, io_apic: Introduce x86_io_apic_ops.print_entries for debugging This call-back is used to dump IO-APIC entries for debugging purposes into the kernel log. VT-d needs a special routine for this and will overwrite the default. Signed-off-by: Joerg Roedel Acked-by: Sebastian Andrzej Siewior Reviewed-by: Konrad Rzeszutek Wilk --- drivers/iommu/intel_irq_remapping.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/iommu') diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index af8904de1d44..cb9a72d4cc09 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -617,6 +617,14 @@ static int __init intel_enable_irq_remapping(void) goto error; irq_remapping_enabled = 1; + + /* + * VT-d has a different layout for IO-APIC entries when + * interrupt remapping is enabled. So it needs a special routine + * to print IO-APIC entries for debugging purposes too. + */ + x86_io_apic_ops.print_entries = intel_ir_io_apic_print_entries; + pr_info("Enabled IRQ remapping in %s mode\n", eim ? "x2apic" : "xapic"); return eim ? IRQ_REMAP_X2APIC_MODE : IRQ_REMAP_XAPIC_MODE; -- cgit v1.2.3-55-g7522