Re: [Bugfix 1/2] ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ

2015-09-28 Thread Rafael J. Wysocki
On Friday, September 25, 2015 06:40:40 PM Bjorn Helgaas wrote: > On Thu, Sep 17, 2015 at 02:02:45PM +0800, Jiang Liu wrote: > > Avoid IRQs occupied by ISA IRQs when allocating IRQs for PCI link devices, > > otherwise it may cause interrupt storm due to incompatible pin attributes. > > > > This iss

Re: [Bugfix 1/2] ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ

2015-09-25 Thread Bjorn Helgaas
On Thu, Sep 17, 2015 at 02:02:45PM +0800, Jiang Liu wrote: > Avoid IRQs occupied by ISA IRQs when allocating IRQs for PCI link devices, > otherwise it may cause interrupt storm due to incompatible pin attributes. > > This issue was triggered on a KVM virtual machine, which > 1) uses IRQ9 for SCI i

[Bugfix 1/2] ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ

2015-09-16 Thread Jiang Liu
Avoid IRQs occupied by ISA IRQs when allocating IRQs for PCI link devices, otherwise it may cause interrupt storm due to incompatible pin attributes. This issue was triggered on a KVM virtual machine, which 1) uses IRQ9 for SCI in high level mode. 2) defines an PCI interrupt link device (LNKS) wit