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Message-ID: <ea19494d-8de6-e907-a735-7f2e5f98f9fb@linux.intel.com>
Date: Thu, 21 Sep 2023 09:31:27 +0800
From: Baolu Lu <baolu.lu@...ux.intel.com>
To: "Liu, Yi L" <yi.l.liu@...el.com>, Jason Gunthorpe <jgg@...dia.com>
Cc: baolu.lu@...ux.intel.com, "joro@...tes.org" <joro@...tes.org>,
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Subject: Re: [PATCH 6/6] iommu/vt-d: Add domain_alloc_user op
On 9/20/23 9:10 PM, Liu, Yi L wrote:
>>>> +
>>>> + domain = iommu_domain_alloc(dev->bus);
>>> No need to bounce between core and driver. Just,
>>>
>>> intel_iommu_domain_alloc(IOMMU_DOMAIN_UNMANAGED);
>>>
>>> and fully initialize it before return.
>> If you are going to do that then intel_iommu_domain_alloc() should
>> fully initialize the domain, not here.
> I've also considered what Baolu described, but it requires to do some
> extra initialization which is duplicated with iommu_domain_alloc().
> So I chose this simple way.
Okay, got you.
Once Jason's paging domain and Robin's bus->iommu_ops retirement series
have landed, the VT-d driver will need some refactoring. Therefore, I'm
fine with you using a simpler approach here. I'll refactor everything
later.
Best regards,
baolu
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