Re: [PATCH v5 4/5] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest

[Jacob Pan]

Hi Jason,

On Tue, 29 Sep 2026 17:04:47 -0300
Jason Gunthorpe <jgg@xxxxxxxxxx> wrote:

> > +config HYPERV_PVIOMMU
> > +	bool "Microsoft Hyper-V para-virtualized IOMMU driver for
> > Linux guests"
> > +	depends on X86_64 && HYPERV
> > +	select IOMMU_API
> > +	select GENERIC_PT
> > +	select IOMMU_PT
> > +	select IOMMU_PT_X86_64
> > +	select IOMMU_IOVA  
> 
> Should this be IOMMU_DMA ?

I agree. I guess we should also delete "select IOMMU_API", since
IOMMU_DMA selects both.

Noticed vt-d driver has the same option, maybe it should also
be changed. Baolu, is that due to historical reasons?

config INTEL_IOMMU
	bool "Support for Intel IOMMU using DMA Remapping Devices"
	depends on PCI_MSI && ACPI && X86
	select IOMMU_API
	select GENERIC_PT
	select IOMMU_PT
	select IOMMU_PT_X86_64
	select IOMMU_PT_VTDSS
	select IOMMU_IOVA