Re: [PATCH v2 1/3] iommu/virtio: Add topology description to virtio-iommu config space

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On Wed, Mar 04, 2020 at 10:50:02PM +0100, Joerg Roedel wrote:
> On Wed, Mar 04, 2020 at 02:34:33PM -0500, Michael S. Tsirkin wrote:
> > All these extra levels of indirection is one of the reasons
> > hypervisors such as kata try to avoid ACPI.
> 
> Platforms that don't use ACPI need another hardware detection mechanism,
> which can also be supported. But the first step here is to enable the
> general case, and for x86 platforms this means ACPI.
> 
> Regards,
> 
> 	Joerg

Frankly since a portable way to do it is needed anyway I don't see why
we also need ACPI.

-- 
MST

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