From: Jason Gunthorpe <jgg@ziepe.ca>
To: Vasant Hegde <vasant.hegde@amd.com>
Cc: iommu@lists.linux.dev, joro@8bytes.org,
suravee.suthikulpanit@amd.com, wei.huang2@amd.com,
jsnitsel@redhat.com
Subject: Re: [PATCH v3 02/12] iommu/amd: Do not override PASID entry in GCR3 table
Date: Mon, 6 Nov 2023 13:51:30 -0400 [thread overview]
Message-ID: <20231106175130.GR4634@ziepe.ca> (raw)
In-Reply-To: <20231016104351.5749-3-vasant.hegde@amd.com>
On Mon, Oct 16, 2023 at 10:43:41AM +0000, Vasant Hegde wrote:
> Return error if PASID is already exists.
>
> Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
> ---
> drivers/iommu/amd/iommu.c | 3 +++
> 1 file changed, 3 insertions(+)
Why is this an error?
ops->set_dev_pasid() should replace any current translation at any
PASID with the requested new translation. It is not an error to call
it while the PASID already has a translation.
Jason
next prev parent reply other threads:[~2023-11-06 17:51 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-16 10:43 [PATCH v3 00/12] iommu/amd: SVA Support (Part 4) - SVA and IOPF Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 01/12] iommu/amd: Rename amd_iommu_v2_supported() as amd_iommu_pasid_supported() Vasant Hegde
2023-11-06 17:50 ` Jason Gunthorpe
2023-10-16 10:43 ` [PATCH v3 02/12] iommu/amd: Do not override PASID entry in GCR3 table Vasant Hegde
2023-11-06 17:51 ` Jason Gunthorpe [this message]
2023-11-07 6:26 ` Vasant Hegde
2023-11-07 13:34 ` Jason Gunthorpe
2023-10-16 10:43 ` [PATCH v3 03/12] iommu/amd: Introduce per device DTE update function Vasant Hegde
2023-11-06 17:54 ` Jason Gunthorpe
2023-11-07 6:47 ` Vasant Hegde
2023-11-07 13:36 ` Jason Gunthorpe
2023-10-16 10:43 ` [PATCH v3 04/12] iommu/amd: Add support for enabling/disabling IOMMU features Vasant Hegde
2023-11-06 17:55 ` Jason Gunthorpe
2023-10-16 10:43 ` [PATCH v3 05/12] iommu/amd: Initial SVA support for AMD IOMMU Vasant Hegde
2023-11-06 23:18 ` Jason Gunthorpe
2023-12-20 11:00 ` Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 06/12] iommu/amd: Add support to enable/disable PASID feature Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 07/12] iommu/amd: Move PPR-related functions into ppr.c Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 08/12] iommu/amd: Define per-IOMMU iopf_queue Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 09/12] iommu/amd: Add support for page response Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 10/12] iommu/amd: Add support for add/remove device for IOPF Vasant Hegde
2023-10-16 10:43 ` [PATCH v3 11/12] iommu/amd: Add IO page fault notifier handler Vasant Hegde
2023-11-06 23:20 ` Jason Gunthorpe
2023-11-07 6:42 ` Vasant Hegde
2023-11-07 13:35 ` Jason Gunthorpe
2023-10-16 10:43 ` [PATCH v3 12/12] iommu/amd: Introduce logic to enable/disable IOPF Vasant Hegde
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