Re: [PATCH v13 03/15] iommu/dma: Allow MSI-only cookies

2016-10-10 Thread Robin Murphy
On 10/10/16 15:47, Auger Eric wrote: > Hi Robin, > > On 10/10/2016 16:26, Robin Murphy wrote: >> Hi Alex, Eric, >> >> On 06/10/16 21:17, Alex Williamson wrote: >>> On Thu, 6 Oct 2016 08:45:19 + >>> Eric Auger wrote: >>> From: Robin Murphy IOMMU domain users such as VFIO face

Re: [PATCH v13 03/15] iommu/dma: Allow MSI-only cookies

2016-10-10 Thread Auger Eric
Hi Robin, On 10/10/2016 16:26, Robin Murphy wrote: > Hi Alex, Eric, > > On 06/10/16 21:17, Alex Williamson wrote: >> On Thu, 6 Oct 2016 08:45:19 + >> Eric Auger wrote: >> >>> From: Robin Murphy >>> >>> IOMMU domain users such as VFIO face a similar problem to DMA API ops >>> with regard to

Re: [PATCH v13 03/15] iommu/dma: Allow MSI-only cookies

2016-10-10 Thread Robin Murphy
Hi Alex, Eric, On 06/10/16 21:17, Alex Williamson wrote: > On Thu, 6 Oct 2016 08:45:19 + > 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 >> subje

Re: [PATCH v13 03/15] iommu/dma: Allow MSI-only cookies

2016-10-07 Thread Auger Eric
Hi Alex, On 06/10/2016 22:17, Alex Williamson wrote: > On Thu, 6 Oct 2016 08:45:19 + > 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 t

Re: [PATCH v13 03/15] iommu/dma: Allow MSI-only cookies

2016-10-06 Thread Alex Williamson
On Thu, 6 Oct 2016 08:45:19 + 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 in > p

[PATCH v13 03/15] iommu/dma: Allow MSI-only cookies

2016-10-06 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 really simple for other