Re: [PATCH V5 1/4] ACPI: Support Generic Initiator only domains

From: Dan Williams
Date: Tue Nov 12 2019 - 12:55:31 EST


[ add Tao Xu ]

On Fri, Oct 4, 2019 at 4:45 AM Jonathan Cameron
<Jonathan.Cameron@xxxxxxxxxx> wrote:
>
> Generic Initiators are a new ACPI concept that allows for the
> description of proximity domains that contain a device which
> performs memory access (such as a network card) but neither
> host CPU nor Memory.
>
> This patch has the parsing code and provides the infrastructure
> for an architecture to associate these new domains with their
> nearest memory processing node.

Thanks for this Jonathan. May I ask how this was tested? Tao has been
working on qemu support for HMAT [1]. I have not checked if it already
supports generic initiator entries, but it would be helpful to include
an example of how the kernel sees these configurations in practice.

[1]: http://patchwork.ozlabs.org/cover/1096737/