Re: [PATCH v2 1/7] genirq/msi: Add a new field in msi_desc to store an IOMMU cookie

2019-04-30 Thread Auger Eric
Hi On 4/29/19 4:44 PM, Julien Grall wrote: > When an MSI doorbell is located downstream of an IOMMU, it is required > to swizzle the physical address with an appropriately-mapped IOVA for any > device attached to one of our DMA ops domain. > > At the moment, the allocation of the mapping may be d

Re: [PATCH v2 1/7] genirq/msi: Add a new field in msi_desc to store an IOMMU cookie

2019-04-29 Thread Robin Murphy
On 29/04/2019 15:44, Julien Grall wrote: When an MSI doorbell is located downstream of an IOMMU, it is required to swizzle the physical address with an appropriately-mapped IOVA for any device attached to one of our DMA ops domain. At the moment, the allocation of the mapping may be done when co

[PATCH v2 1/7] genirq/msi: Add a new field in msi_desc to store an IOMMU cookie

2019-04-29 Thread Julien Grall
When an MSI doorbell is located downstream of an IOMMU, it is required to swizzle the physical address with an appropriately-mapped IOVA for any device attached to one of our DMA ops domain. At the moment, the allocation of the mapping may be done when composing the message. However, the composing