Commit 30ce0350 authored Jun 17, 2016 by Keith Busch Committed by Thomas Gleixner Jun 18, 2016

x86/PCI/VMD: Use untracked irq handler



There is no way to know which device in a VMD triggered an interrupt
without invoking every registered driver's actions. This uses the
untracked irq handler so that a less used device does not trigger
spurious interrupt.

We have been previously recommending users to enable "noirqdebug", but do
not want to force a system setting just to keep this domain functional.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Cc: Jon Derrick <jonathan.derrick@intel.com>
Link: http://lkml.kernel.org/r/1466200821-29159-2-git-send-email-keith.busch@intel.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent edd14cfe

arch/x86/pci/vmd.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -195,7 +195,7 @@ static int vmd_msi_init(struct irq_domain domain, struct msi_domain_info info,
		vmdirq->virq = virq;

		irq_domain_set_info(domain, virq, vmdirq->irq->vmd_vector, info->chip,
		vmdirq, handle_simple_irq, vmd, NULL);
		vmdirq, handle_untracked_irq, vmd, NULL);
		return 0;
		}