From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Alexey Kardashevskiy <aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
Cc: Benjamin Herrenschmidt
<benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
David Gibson
<david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
Subject: Re: [PATCH] iommu: add a function to find an iommu group by id
Date: Wed, 24 Apr 2013 20:01:49 +0200 [thread overview]
Message-ID: <20130424180114.GB3167@8bytes.org> (raw)
In-Reply-To: <1364167429-6432-1-git-send-email-aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
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-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
Applied to core branch, thanks Alexey.
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Alex Williamson <alex.williamson@redhat.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [PATCH] iommu: add a function to find an iommu group by id
Date: Wed, 24 Apr 2013 20:01:49 +0200 [thread overview]
Message-ID: <20130424180114.GB3167@8bytes.org> (raw)
In-Reply-To: <1364167429-6432-1-git-send-email-aik@ozlabs.ru>
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@ozlabs.ru>
Applied to core branch, thanks Alexey.
next prev parent reply other threads:[~2013-04-24 18:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-24 23:23 [PATCH] iommu: add a function to find an iommu group by id Alexey Kardashevskiy
2013-03-24 23:23 ` Alexey Kardashevskiy
[not found] ` <1364167429-6432-1-git-send-email-aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2013-03-25 14:28 ` Alex Williamson
2013-03-25 14:28 ` Alex Williamson
[not found] ` <1364221712.24132.632.camel-xdHQ/5r00wBBDLzU/O5InQ@public.gmane.org>
2013-03-25 15:07 ` Don Dutile
2013-03-25 15:07 ` Don Dutile
2013-04-24 18:01 ` Joerg Roedel [this message]
2013-04-24 18:01 ` Joerg Roedel
-- strict thread matches above, loose matches on Subject: below --
2013-03-21 7:48 Alexey Kardashevskiy
[not found] ` <1363852122-17974-1-git-send-email-aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2013-03-21 16:35 ` Alex Williamson
2013-03-21 16:35 ` Alex Williamson
[not found] ` <1363883719.2747.13.camel-85EaTFmN5p//9pzu0YdTqQ@public.gmane.org>
2013-03-22 6:49 ` Alexey Kardashevskiy
2013-03-22 6:49 ` Alexey Kardashevskiy
[not found] ` <1363934941-21020-1-git-send-email-aik-sLpHqDYs0B2HXe+LvDLADg@public.gmane.org>
2013-03-22 16:07 ` Alex Williamson
2013-03-22 16:07 ` Alex Williamson
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