On Thu, Nov 17, 2016 at 02:24:54PM +1100, David Gibson wrote:
> On Mon, Nov 14, 2016 at 07:59:28PM -0500, Peter Xu wrote:
> > When one IOMMU memory region is splitted into multiple memory sections,
> > vfio will register multiple same notifiers to a vIOMMU for the same
> > region. That's not sensib
On Mon, Nov 14, 2016 at 07:59:28PM -0500, Peter Xu wrote:
> When one IOMMU memory region is splitted into multiple memory sections,
> vfio will register multiple same notifiers to a vIOMMU for the same
> region. That's not sensible. What we need is to register one IOMMU
> notifier for each IOMMU re
On Tue, Nov 15, 2016 at 04:11:57PM +1100, Alexey Kardashevskiy wrote:
> On 15/11/16 11:59, Peter Xu wrote:
> > When one IOMMU memory region is splitted into multiple memory sections,
>
>
> Out of curiosity - when does this happen?
My understanding: each PCI device will have one IOMMU region when
On 15/11/16 11:59, Peter Xu wrote:
> When one IOMMU memory region is splitted into multiple memory sections,
Out of curiosity - when does this happen?
> vfio will register multiple same notifiers to a vIOMMU for the same
> region. That's not sensible. What we need is to register one IOMMU
> not
On Mon, Nov 14, 2016 at 07:59:28PM -0500, Peter Xu wrote:
> When one IOMMU memory region is splitted into multiple memory sections,
> vfio will register multiple same notifiers to a vIOMMU for the same
> region. That's not sensible. What we need is to register one IOMMU
> notifier for each IOMMU re
When one IOMMU memory region is splitted into multiple memory sections,
vfio will register multiple same notifiers to a vIOMMU for the same
region. That's not sensible. What we need is to register one IOMMU
notifier for each IOMMU region, not per section.
Solution is simple - we traverse the conta
