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From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: Wed, 16 Nov 2016 01:56:35 +0100
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Subject: Re: [PATCH v7 16/16] drivers: acpi: iort: introduce iort_iommu_configure
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: "open list:AMD IOMMU (AMD-VI)" <iommu@lists.linux-foundation.org>,
        Hanjun Guo <hanjun.guo@linaro.org>, Tomasz Nowicki <tn@semihalf.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
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On Wed, Nov 9, 2016 at 3:19 PM, Lorenzo Pieralisi
<lorenzo.pieralisi@arm.com> wrote:
> DT based systems have a generic kernel API to configure IOMMUs
> for devices (ie of_iommu_configure()).
>
> On ARM based ACPI systems, the of_iommu_configure() equivalent can
> be implemented atop ACPI IORT kernel API, with the corresponding
> functions to map device identifiers to IOMMUs and retrieve the
> corresponding IOMMU operations necessary for DMA operations set-up.
>
> By relying on the iommu_fwspec generic kernel infrastructure,
> implement the IORT based IOMMU configuration for ARM ACPI systems
> and hook it up in the ACPI kernel layer that implements DMA
> configuration for a device.
>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
> Tested-by: Tomasz Nowicki <tn@semihalf.com>
> Cc: Hanjun Guo <hanjun.guo@linaro.org>
> Cc: Tomasz Nowicki <tn@semihalf.com>
> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>

For the ACPI core part:

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>