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

2013-04-24 Thread Joerg Roedel
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

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

2013-04-24 Thread Joerg Roedel
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

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

2013-03-25 Thread Don Dutile
On 03/25/2013 10:28 AM, Alex Williamson wrote: On Mon, 2013-03-25 at 10:23 +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

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

2013-03-25 Thread Alex Williamson
On Mon, 2013-03-25 at 10:23 +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

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

2013-03-25 Thread Alex Williamson
On Mon, 2013-03-25 at 10:23 +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

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

2013-03-25 Thread Don Dutile
On 03/25/2013 10:28 AM, Alex Williamson wrote: On Mon, 2013-03-25 at 10:23 +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

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

2013-03-24 Thread Alexey Kardashevskiy
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

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

2013-03-24 Thread Alexey Kardashevskiy
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

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

2013-03-22 Thread Alex Williamson
On Fri, 2013-03-22 at 17:49 +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

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

2013-03-22 Thread Alexey Kardashevskiy
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

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

2013-03-22 Thread Alexey Kardashevskiy
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

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

2013-03-22 Thread Alex Williamson
On Fri, 2013-03-22 at 17:49 +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

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

2013-03-21 Thread Alex Williamson
On Thu, 2013-03-21 at 18:48 +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

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

2013-03-21 Thread Alexey Kardashevskiy
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

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

2013-03-21 Thread Alexey Kardashevskiy
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

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

2013-03-21 Thread Alex Williamson
On Thu, 2013-03-21 at 18:48 +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