Re: [PATCH v2] iommu/iova: Optimise attempts to allocate iova from 32bit address range

2018-08-13 Thread Robin Murphy
On 13/08/18 09:00, Ganapatrao Kulkarni wrote: As an optimisation for PCI devices, there is always first attempt been made to allocate iova from SAC address range. This will lead to unnecessary attempts, when there are no free ranges available. Adding fix to track recently failed iova address size

[PATCH v2] iommu/iova: Optimise attempts to allocate iova from 32bit address range

2018-08-13 Thread Ganapatrao Kulkarni
As an optimisation for PCI devices, there is always first attempt been made to allocate iova from SAC address range. This will lead to unnecessary attempts, when there are no free ranges available. Adding fix to track recently failed iova address size and allow further attempts, only if requested s