From: Jason Gunthorpe <jgg@ziepe.ca>
To: Vasant Hegde <vasant.hegde@amd.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
Baolu Lu <baolu.lu@linux.intel.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"joro@8bytes.org" <joro@8bytes.org>,
"will@kernel.org" <will@kernel.org>,
"robin.murphy@arm.com" <robin.murphy@arm.com>,
"suravee.suthikulpanit@amd.com" <suravee.suthikulpanit@amd.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
Alex Williamson <alex.williamson@redhat.com>
Subject: Re: [PATCH RFCv2] iommu: Add domain type and flag to domain_alloc_paging()
Date: Thu, 15 Aug 2024 10:05:07 -0300 [thread overview]
Message-ID: <20240815130507.GI3468552@ziepe.ca> (raw)
In-Reply-To: <ad009d03-9a38-4b0e-ac90-13bd8ea0b191@amd.com>
On Thu, Aug 15, 2024 at 08:58:14AM +0530, Vasant Hegde wrote:
> > I also know of no HW that would need it to be different on the RID
>
> Ok. Single macro with `IOMMU_HWPT_ALLOC_PASID` which allocates PASID capable
> domain if both IOMMU and device supports the feature. If not allocate normal
> domain -OR- return error?
I think fail if the IOMMU does not support PASID.
> Also I would assume we want to enhance iommufd_get_hw_info ioctl to get device
> PASID capability. Is that correct?
Yes. Some flag to indicate the device and iommu together are able to
support PASID.
Jason
next prev parent reply other threads:[~2024-08-15 13:05 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-01 14:45 [PATCH RFCv2] iommu: Add domain type and flag to domain_alloc_paging() Vasant Hegde
2024-08-02 0:44 ` Baolu Lu
2024-08-02 5:53 ` Vasant Hegde
2024-08-06 12:34 ` Jason Gunthorpe
2024-08-06 14:41 ` Vasant Hegde
2024-08-06 17:32 ` Jason Gunthorpe
2024-08-07 5:49 ` Baolu Lu
2024-08-07 9:32 ` Vasant Hegde
2024-08-07 12:33 ` Jason Gunthorpe
2024-08-07 9:30 ` Vasant Hegde
2024-08-07 13:59 ` Jason Gunthorpe
2024-08-07 16:52 ` Vasant Hegde
2024-08-07 18:29 ` Jason Gunthorpe
2024-08-08 1:16 ` Jason Gunthorpe
2024-08-08 13:08 ` Jason Gunthorpe
2024-08-09 6:43 ` Vasant Hegde
2024-08-09 13:44 ` Jason Gunthorpe
2024-08-12 9:21 ` Vasant Hegde
2024-08-13 16:22 ` Jason Gunthorpe
2024-08-14 10:54 ` Vasant Hegde
2024-08-09 5:36 ` Vasant Hegde
2024-08-12 12:07 ` Yi Liu
2024-08-13 9:40 ` Tian, Kevin
2024-08-13 16:20 ` Jason Gunthorpe
2024-08-14 2:38 ` Tian, Kevin
2024-08-14 22:40 ` Jason Gunthorpe
2024-08-15 3:28 ` Vasant Hegde
2024-08-15 4:58 ` Yi Liu
2024-08-15 13:06 ` Jason Gunthorpe
2024-08-16 11:59 ` Yi Liu
2024-08-15 4:59 ` Baolu Lu
2024-08-15 13:47 ` Jason Gunthorpe
2024-08-16 8:17 ` Vasant Hegde
2024-08-16 12:01 ` Yi Liu
2024-08-16 18:37 ` Jason Gunthorpe
2024-08-19 8:27 ` Vasant Hegde
2024-08-19 17:52 ` Jason Gunthorpe
2024-08-20 8:18 ` Vasant Hegde
2024-08-15 13:05 ` Jason Gunthorpe [this message]
2024-08-12 12:01 ` Yi Liu
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