Re: [PATCH v3 17/17] x86/hyperv: handle IO-APIC when running as root

Hi Wei, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/x86/core] [also build test WARNING on asm-generic/master iommu/next tip/timers/core pci/next linus/master v5.10-rc5] [cannot apply to next-20201124] [If your patch is applied to the wrong git tree, kindly

[PATCH v3 17/17] x86/hyperv: handle IO-APIC when running as root

Just like MSI/MSI-X, IO-APIC interrupts are remapped by Microsoft Hypervisor when Linux runs as the root partition. Implement an IRQ chip to handle mapping and unmapping of IO-APIC interrupts. Use custom functions for mapping and unmapping ACPI GSIs. They will issue Microsoft Hypervisor specific