Hi Lan,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on iommu/next]
[also build test ERROR on v5.0-rc4]
[cannot apply to next-20190204]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0da
From: lantianyu1...@gmail.com Sent: Saturday,
February 2, 2019 5:15 AM
I have a couple more comments
>
> +config HYPERV_IOMMU
> + bool "Hyper-V IRQ Remapping Support"
> + depends on HYPERV
> + select IOMMU_API
> + help
> + Hyper-V stub IOMMU driver provides IRQ Rem
From: lantianyu1...@gmail.com Sent: Saturday,
February 2, 2019 5:15 AM
>
> +/*
> + * According 82093AA IO-APIC spec , IO APIC has a 24-entry Interrupt
> + * Redirection Table.
> + */
> +#define IOAPIC_REMAPPING_ENTRY 24
The other unstated assumption here is that Hyper-v guest VMs
have only a si
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
