On 2022/4/13 7:32, Tian, Kevin wrote:
From: Lu Baolu
Sent: Tuesday, April 12, 2022 9:03 PM
On 2022/4/12 15:37, Tian, Kevin wrote:
From: Lu Baolu
Sent: Tuesday, April 12, 2022 1:09 PM
On 2022/4/12 11:15, Tian, Kevin wrote:
From: Lu Baolu
Sent: Sunday, April 10, 2022 6:25 PM
This adds a
> From: Lu Baolu
> Sent: Tuesday, April 12, 2022 9:03 PM
>
> On 2022/4/12 15:37, Tian, Kevin wrote:
> >> From: Lu Baolu
> >> Sent: Tuesday, April 12, 2022 1:09 PM
> >> On 2022/4/12 11:15, Tian, Kevin wrote:
> From: Lu Baolu
> Sent: Sunday, April 10, 2022 6:25 PM
> >>>
>
>
On 2022/4/12 15:39, Tian, Kevin wrote:
From: Lu Baolu
Sent: Sunday, April 10, 2022 6:25 PM
@@ -898,6 +941,20 @@ int iommu_group_add_device(struct iommu_group
*group, struct device *dev)
list_add_tail(>list, >devices);
if (group->domain && !iommu_is_attach_deferred(dev))
On 2022/4/12 15:37, Tian, Kevin wrote:
From: Lu Baolu
Sent: Tuesday, April 12, 2022 1:09 PM
On 2022/4/12 11:15, Tian, Kevin wrote:
From: Lu Baolu
Sent: Sunday, April 10, 2022 6:25 PM
This adds a flag in the iommu_group struct to indicate an immutable
singleton group, and uses standard PCI
Hi Yi,
On 2022/4/12 14:34, Yi Liu wrote:
This adds a flag in the iommu_group struct to indicate an immutable
singleton group, and uses standard PCI bus topology, isolation
features,
and DMA alias quirks to set the flag. If the device came from DT,
assume
it is static and then the
> From: Lu Baolu
> Sent: Sunday, April 10, 2022 6:25 PM
> @@ -898,6 +941,20 @@ int iommu_group_add_device(struct iommu_group
> *group, struct device *dev)
> list_add_tail(>list, >devices);
> if (group->domain && !iommu_is_attach_deferred(dev))
> ret =
> From: Lu Baolu
> Sent: Tuesday, April 12, 2022 1:09 PM
> On 2022/4/12 11:15, Tian, Kevin wrote:
> >> From: Lu Baolu
> >> Sent: Sunday, April 10, 2022 6:25 PM
> >
> >>
> >> This adds a flag in the iommu_group struct to indicate an immutable
> >> singleton group, and uses standard PCI bus
Hi Baolu,
On 2022/4/12 13:08, Lu Baolu wrote:
Hi Kevin,
Thanks for your time.
On 2022/4/12 11:15, Tian, Kevin wrote:
From: Lu Baolu
Sent: Sunday, April 10, 2022 6:25 PM
Some features require that a single device must be immutably isolated,
even when hot plug is supported.
This reads
Hi Kevin,
Thanks for your time.
On 2022/4/12 11:15, Tian, Kevin wrote:
From: Lu Baolu
Sent: Sunday, April 10, 2022 6:25 PM
Some features require that a single device must be immutably isolated,
even when hot plug is supported.
This reads confusing, as hotplug cannot be allowed in a
> From: Lu Baolu
> Sent: Sunday, April 10, 2022 6:25 PM
>
> Some features require that a single device must be immutably isolated,
> even when hot plug is supported.
This reads confusing, as hotplug cannot be allowed in a singleton group.
What you actually meant suppose to be:
"Enabling
Some features require that a single device must be immutably isolated,
even when hot plug is supported. For example, the SVA bind()/unbind()
interfaces require that the device exists in a singleton group. If we
have a singleton group that doesn't have ACS (or similar technologies)
and someone
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