[PATCH 2/2] vmd: use untracked irq handler

From	Keith Busch <keith.busch@intel.com>
Newsgroups	linux.kernel
Subject	[PATCH 2/2] vmd: use untracked irq handler
Date	2016-06-18 00:10 +0200
Message-ID	<rLa7D-3SN-9@gated-at.bofh.it> (permalink)
References	<rLa7D-3SN-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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There is no way to know which device in a VMD tiggered 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 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>
---
 arch/x86/pci/vmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/pci/vmd.c b/arch/x86/pci/vmd.c
index 7792aba..613cac7 100644
--- a/arch/x86/pci/vmd.c
+++ b/arch/x86/pci/vmd.c
@@ -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;
 }
 
-- 
2.7.2

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[PATCH 2/2] vmd: use untracked irq handler Keith Busch <keith.busch@intel.com> - 2016-06-18 00:10 +0200
  Re: [PATCH 2/2] vmd: use untracked irq handler Bjorn Helgaas <helgaas@kernel.org> - 2016-06-18 01:10 +0200
  [tip:irq/core] x86/PCI/VMD: Use untracked irq handler tip-bot for Keith Busch <tipbot@zytor.com> - 2016-06-18 10:10 +0200

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