On Fri, May 16, 2014 at 1:05 AM, Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx> wrote: > On x86 platforms, IRQ number are statically allocated to IOAPIC pins at boot. > There are two issues with this design. First it causes trouble to IOAPIC > hotplug because we need to allocate a block of IRQ numbers for each IOAPIC. > Second it may waste IRQ nubmers even if some IOAPIC pins are not used because > IRQ numbers are statically assigned. > > This patchset tries to enable dynamic IRQ number allocation for IOAPIC > by adopting the irqdomain framework, it solves the two issues mentioned > above. It also simplifies the IOAPIC driver by consolidating ways to > program IOAPIC pins with the irqdomain map interface. > > We will enhance the IOAPIC driver core to support ACPI based IOAPIC hotplug > once the IOAPIC driver has been converted to irqdomain. > > This patchset applies to v3.15-rc4-260-g38583f095c5a and has been tested > on a two socket 64 bit Intel platforms with: > 1) ACPI and mpparse enabled (boot successfully) > 2) Mpparse enabled with ACPI disabled (boot successfully) > 3) ACPI enabled with Mpparse disabled (boot successfully) Great. I don't need to look into using irqdomain for x86 by myself. Thomas put some irq clean up patches in tip irq branch. Can you rebase your irqdomain/for x86 on top of that? Also would be better if you can put your patches in git branch. Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
