RE: [PATCH v6 16/16] iommu/hyperv: setup an IO-APIC IRQ remapping domain for root partition

[Michael Kelley]

From: Wei Liu <wei.liu@xxxxxxxxxx> Sent: Wednesday, February 3, 2021 7:05 AM
> 
> Just like MSI/MSI-X, IO-APIC interrupts are remapped by Microsoft
> Hypervisor when Linux runs as the root partition. Implement an IRQ
> domain to handle mapping and unmapping of IO-APIC interrupts.
> 
> Signed-off-by: Wei Liu <wei.liu@xxxxxxxxxx>
> ---
> v6:
> 1. Simplify code due to changes in a previous patch.
> ---
>  arch/x86/hyperv/irqdomain.c     |  25 +++++
>  arch/x86/include/asm/mshyperv.h |   4 +
>  drivers/iommu/hyperv-iommu.c    | 177 +++++++++++++++++++++++++++++++-
>  3 files changed, 203 insertions(+), 3 deletions(-)
> 

Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>