Re: [RFC v2 3/8] iommu/dma: Allow MSI-only cookies

2016-11-15 Thread Robin Murphy
On 14/11/16 23:23, Auger Eric wrote: > Hi Robin, > > On 14/11/2016 13:36, Robin Murphy wrote: >> On 04/11/16 11:24, Eric Auger wrote: >>> From: Robin Murphy >>> >>> IOMMU domain users such as VFIO face a similar problem to DMA API ops >>> with regard to mapping MSI messages

Re: [RFC v2 3/8] iommu/dma: Allow MSI-only cookies

2016-11-14 Thread Auger Eric
Hi Robin, On 14/11/2016 13:36, Robin Murphy wrote: > On 04/11/16 11:24, Eric Auger wrote: >> From: Robin Murphy >> >> IOMMU domain users such as VFIO face a similar problem to DMA API ops >> with regard to mapping MSI messages in systems where the MSI write is >> subject to

Re: [RFC v2 3/8] iommu/dma: Allow MSI-only cookies

2016-11-14 Thread Robin Murphy
On 04/11/16 11:24, Eric Auger wrote: > From: Robin Murphy > > IOMMU domain users such as VFIO face a similar problem to DMA API ops > with regard to mapping MSI messages in systems where the MSI write is > subject to IOMMU translation. With the relevant infrastructure now

[RFC v2 3/8] iommu/dma: Allow MSI-only cookies

2016-11-04 Thread Eric Auger
From: Robin Murphy IOMMU domain users such as VFIO face a similar problem to DMA API ops with regard to mapping MSI messages in systems where the MSI write is subject to IOMMU translation. With the relevant infrastructure now in place for managed DMA domains, it's actually