On 2014/5/16 23:01, Yinghai Lu wrote: > 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. Hi Yinghai, I have rebased to tip/irq/core branch and will send out new patch set after basic tests. I have no account at kernel.org, so will try to setup a gate on github next time. Thanks! > > Thanks > > Yinghai > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
