...@microchip.com; a...@arndb.de; linux-ker...@vger.kernel.org;
iommu@lists.linux-foundation.org; KY Srinivasan ; vkuznets
; alex.william...@redhat.com; sas...@kernel.org;
dan.carpen...@oracle.com; linux-hyp...@vger.kernel.org
Subject: RE: [PATCH V4 2/3] HYPERV/IOMMU: Add Hyper-V stub IOMMU driver
From: lantianyu1...@gmail.com Sent: Monday, February
11, 2019 6:20 AM
> + /*
> + * Hyper-V doesn't provide irq remapping function for
> + * IO-APIC and so IO-APIC only accepts 8-bit APIC ID.
> + * Cpu's APIC ID is read from ACPI MADT table and APIC IDs
> + * in the MADT ta
From: Lan Tianyu
On the bare metal, enabling X2APIC mode requires interrupt remapping
function which helps to deliver irq to cpu with 32-bit APIC ID.
Hyper-V doesn't provide interrupt remapping function so far and Hyper-V
MSI protocol already supports to deliver interrupt to the CPU whose
virtual
