Re: [PATCH v7 09/24] KVM: arm64: vgic-its: Introduce migration ABI infrastructure

Christoffer Dall
2017-05-08T12:23:34Z

On Sat, May 06, 2017 at 05:24:28PM +0200, Eric Auger wrote:
> We plan to support different migration ABIs, ie. characterizing
> the ITS table layout format in guest RAM. For example, a new ABI
> will be needed if vLPIs get supported for nested use case.
>
> So let's introduce an array of supported ABIs (at the moment a single
> ABI is supported though). The following characteristics are foreseen
> to vary with the ABI: size of table entries, save/restore operation,
> the way abi settings are applied.
>
> By default the MAX_ABI_REV is applied on its creation. In subsequent
> patches we will introduce a way for the userspace to change the ABI
> in use.
>
> The entry sizes now are set according to the ABI version and not
> hardcoded anymore.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>
Reviewed-by: Christoffer Dall <cdall@linaro.org>