Messages in this thread Patch in this message | | | Date | Sat, 18 Jun 2016 01:07:38 -0700 | From | tip-bot for Keith Busch <> | Subject | [tip:irq/core] x86/PCI/VMD: Use untracked irq handler |
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Commit-ID: 30ce0350381351646ef86b64e6d3840b3869833b Gitweb: http://git.kernel.org/tip/30ce0350381351646ef86b64e6d3840b3869833b Author: Keith Busch <keith.busch@intel.com> AuthorDate: Fri, 17 Jun 2016 16:00:21 -0600 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Sat, 18 Jun 2016 10:00:55 +0200
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>
--- 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; }
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