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SubjectRe: [PATCH v2 1/7] driver core: Add iommu_group tracking to struct device
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On Wed, 2012-05-30 at 14:18 -0600, Alex Williamson wrote:
> IOMMU groups allow IOMMU drivers to represent DMA visibility
> and isolation of devices. Multiple devices may be grouped
> together for the purposes of DMA. Placing a pointer on
> struct device enable easy access for things like streaming
> DMA programming and drivers like VFIO.
>
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

> ---
>
> include/linux/device.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/include/linux/device.h b/include/linux/device.h
> index 161d962..d0e4d99 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -36,6 +36,7 @@ struct subsys_private;
> struct bus_type;
> struct device_node;
> struct iommu_ops;
> +struct iommu_group;
>
> struct bus_attribute {
> struct attribute attr;
> @@ -687,6 +688,7 @@ struct device {
> const struct attribute_group **groups; /* optional groups */
>
> void (*release)(struct device *dev);
> + struct iommu_group *iommu_group;
> };
>
> /* Get the wakeup routines, which depend on struct device */
>
> --
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