Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-10-07 Thread Kunkun Jiang
Hi Eric, On 2021/10/8 0:58, Eric Auger wrote: Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: On 2021/4/13 20:57, Auger Eric wrote: Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: Hi Eric, On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be u

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-10-07 Thread Eric Auger
Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: > On 2021/4/13 20:57, Auger Eric wrote: >> Hi Kunkun, >> >> On 4/13/21 2:10 PM, Kunkun Jiang wrote: >>> Hi Eric, >>> >>> On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be used as there is no "ca

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-29 Thread Auger Eric
Hi Kunkun, On 4/28/21 11:51 AM, Kunkun Jiang wrote: > Hi Eric, > > On 2021/4/27 3:16, Auger Eric wrote: >> Hi Kunkun, >> >> On 4/15/21 4:03 AM, Kunkun Jiang wrote: >>> Hi Eric, >>> >>> On 2021/4/14 16:05, Auger Eric wrote: Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: > On

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-28 Thread Kunkun Jiang
Hi Eric, On 2021/4/27 3:16, Auger Eric wrote: Hi Kunkun, On 4/15/21 4:03 AM, Kunkun Jiang wrote: Hi Eric, On 2021/4/14 16:05, Auger Eric wrote: Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: On 2021/4/13 20:57, Auger Eric wrote: Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: Hi

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-27 Thread Kunkun Jiang
Hi Eric, On 2021/4/26 20:30, Auger Eric wrote: Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: On 2021/4/13 20:57, Auger Eric wrote: Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: Hi Eric, On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-26 Thread Auger Eric
Hi Kunkun, On 4/15/21 4:03 AM, Kunkun Jiang wrote: > Hi Eric, > > On 2021/4/14 16:05, Auger Eric wrote: >> Hi Kunkun, >> >> On 4/14/21 3:45 AM, Kunkun Jiang wrote: >>> On 2021/4/13 20:57, Auger Eric wrote: Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: > Hi Eric, >

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-26 Thread Auger Eric
Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: > On 2021/4/13 20:57, Auger Eric wrote: >> Hi Kunkun, >> >> On 4/13/21 2:10 PM, Kunkun Jiang wrote: >>> Hi Eric, >>> >>> On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be used as there is no "ca

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-14 Thread Kunkun Jiang
Hi Eric, On 2021/4/14 16:05, Auger Eric wrote: Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: On 2021/4/13 20:57, Auger Eric wrote: Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: Hi Eric, On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-14 Thread Auger Eric
Hi Kunkun, On 4/14/21 3:45 AM, Kunkun Jiang wrote: > On 2021/4/13 20:57, Auger Eric wrote: >> Hi Kunkun, >> >> On 4/13/21 2:10 PM, Kunkun Jiang wrote: >>> Hi Eric, >>> >>> On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be used as there is no "ca

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-13 Thread Kunkun Jiang
On 2021/4/13 20:57, Auger Eric wrote: Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: Hi Eric, On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be used as there is no "caching" mode and we do not trap on map. On Intel, vfio_iommu_map_notify was use

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-13 Thread Auger Eric
Hi Kunkun, On 4/13/21 2:10 PM, Kunkun Jiang wrote: > Hi Eric, > > On 2021/4/11 20:08, Eric Auger wrote: >> In nested mode, legacy vfio_iommu_map_notify cannot be used as >> there is no "caching" mode and we do not trap on map. >> >> On Intel, vfio_iommu_map_notify was used to DMA map the RAM >> t

Re: [RFC v9 15/29] vfio: Set up nested stage mappings

2021-04-13 Thread Kunkun Jiang
Hi Eric, On 2021/4/11 20:08, Eric Auger wrote: In nested mode, legacy vfio_iommu_map_notify cannot be used as there is no "caching" mode and we do not trap on map. On Intel, vfio_iommu_map_notify was used to DMA map the RAM through the host single stage. With nested mode, we need to setup the