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Re: [PATCH v11 4/7] xen/arm: smmuv3: Add PCI devices support for SMMUv3
- To: Julien Grall <julien@xxxxxxx>, Demi Marie Obenour <demiobenour@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Tue, 10 Jun 2025 13:13:05 +0000
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- Cc: Bertrand Marquis <bertrand.marquis@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Delivery-date: Tue, 10 Jun 2025 13:13:10 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHbz7Cb+Z/yNKbLOEOjir1VN7bH5LPo3kyAgAogQYCACXTdAA==
- Thread-topic: [PATCH v11 4/7] xen/arm: smmuv3: Add PCI devices support for SMMUv3
On 29/05/2025 03:10, Demi Marie Obenour wrote:
>> On 5/28/25 05:12, Mykyta Poturai wrote:
>>> From: Rahul Singh <rahul.singh@xxxxxxx>
>>>
>>> Implement support for PCI devices in the SMMU driver. Trigger iommu-map
>>> parsing when new PCI device is added. Add checks to assign/deassign
>>> functions to ensure PCI devices are handled correctly. Implement basic
>>> quarantining.
>>>
>>> All pci devices are automatically assigned to hardware domain if it
>>> exists
>>> to ensure it can probe them.
>> This is only safe for devices present at boot time. It’s not safe for
>> hotplugged devices, which should be quarantined.
>
Hi Demi,
Could you please explain a little more in detail what do you think the
issues will be here? As far as I understand quarantining is only
relevant for transitioning devices between domains. Maybe I am missing
something here.
--
Mykyta
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