Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-16 Thread Leon Romanovsky
On Sat, Jan 16, 2021 at 04:47:40PM +0800, Lu Baolu wrote: > Hi Leon, > > On 2021/1/16 16:39, Leon Romanovsky wrote: > > On Sat, Jan 16, 2021 at 09:20:16AM +0800, Lu Baolu wrote: > > > Hi, > > > > > > On 2021/1/15 14:31, Leon Romanovsky wrote: > > > > On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Bao

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-16 Thread Lu Baolu
Hi Leon, On 2021/1/16 16:39, Leon Romanovsky wrote: On Sat, Jan 16, 2021 at 09:20:16AM +0800, Lu Baolu wrote: Hi, On 2021/1/15 14:31, Leon Romanovsky wrote: On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Baolu wrote: Hi Leon, On 1/14/21 9:26 PM, Leon Romanovsky wrote: On Thu, Jan 14, 2021 at

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-16 Thread Leon Romanovsky
On Sat, Jan 16, 2021 at 09:20:16AM +0800, Lu Baolu wrote: > Hi, > > On 2021/1/15 14:31, Leon Romanovsky wrote: > > On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Baolu wrote: > > > Hi Leon, > > > > > > On 1/14/21 9:26 PM, Leon Romanovsky wrote: > > > > On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Bao

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-15 Thread Lu Baolu
Hi, On 2021/1/15 14:31, Leon Romanovsky wrote: On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Baolu wrote: Hi Leon, On 1/14/21 9:26 PM, Leon Romanovsky wrote: On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Baolu wrote: Some vendor IOMMU drivers are able to declare that it is running in a VM cont

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-14 Thread Leon Romanovsky
On Fri, Jan 15, 2021 at 07:49:47AM +0800, Lu Baolu wrote: > Hi Leon, > > On 1/14/21 9:26 PM, Leon Romanovsky wrote: > > On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Baolu wrote: > > > Some vendor IOMMU drivers are able to declare that it is running in a VM > > > context. This is very valuable for t

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-14 Thread Jason Wang
On 2021/1/14 上午9:30, Lu Baolu wrote: Some vendor IOMMU drivers are able to declare that it is running in a VM context. This is very valuable for the features that only want to be supported on bare metal. Add a capability bit so that it could be used. Signed-off-by: Lu Baolu --- drivers/iomm

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-14 Thread Lu Baolu
Hi Leon, On 1/14/21 9:26 PM, Leon Romanovsky wrote: On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Baolu wrote: Some vendor IOMMU drivers are able to declare that it is running in a VM context. This is very valuable for the features that only want to be supported on bare metal. Add a capability b

Re: [RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-14 Thread Leon Romanovsky
On Thu, Jan 14, 2021 at 09:30:02AM +0800, Lu Baolu wrote: > Some vendor IOMMU drivers are able to declare that it is running in a VM > context. This is very valuable for the features that only want to be > supported on bare metal. Add a capability bit so that it could be used. And how is it used?

[RFC PATCH v3 1/2] iommu: Add capability IOMMU_CAP_VIOMMU

2021-01-13 Thread Lu Baolu
Some vendor IOMMU drivers are able to declare that it is running in a VM context. This is very valuable for the features that only want to be supported on bare metal. Add a capability bit so that it could be used. Signed-off-by: Lu Baolu --- drivers/iommu/intel/iommu.c | 20