Re: [PATCH] iommu: add a function to find an iommu group by id

From: Joerg Roedel
Date: Wed Apr 24 2013 - 14:01:56 EST

On Mon, Mar 25, 2013 at 10:23:49AM +1100, Alexey Kardashevskiy wrote:
> As IOMMU groups are exposed to the user space by their numbers,
> the user space can use them in various kernel APIs so the kernel
> might need an API to find a group by its ID.
> As an example, QEMU VFIO on PPC64 platform needs it to associate
> a logical bus number (LIOBN) with a specific IOMMU group in order
> to support in-kernel handling of DMA map/unmap requests.
> The patch adds the iommu_group_get_by_id(id) function which performs
> such search.
> v2: fixed reference counting.
> Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>

Applied to core branch, thanks Alexey.

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