From: Jason Gunthorpe <jgg@nvidia.com>
To: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: nicolinc@nvidia.com, linux-kernel@vger.kernel.org,
robin.murphy@arm.com, will@kernel.org, joro@8bytes.org,
kevin.tian@intel.com, jsnitsel@redhat.com, vasant.hegde@amd.com,
iommu@lists.linux.dev, santosh.shukla@amd.com,
sairaj.arunkodilkar@amd.com, jon.grimm@amd.com,
prashanthpra@google.com, wvw@google.com, wnliu@google.com,
gptran@google.com, kpsingh@google.com, joao.m.martins@oracle.com,
alejandro.j.jimenez@oracle.com
Subject: Re: [PATCH v3 10/15] iommu/amd: Add support for nest parent domain allocation
Date: Fri, 10 Oct 2025 19:38:34 -0300 [thread overview]
Message-ID: <20251010223834.GK3901471@nvidia.com> (raw)
In-Reply-To: <20251009235755.4497-11-suravee.suthikulpanit@amd.com>
On Thu, Oct 09, 2025 at 11:57:50PM +0000, Suravee Suthikulpanit wrote:
> To support nested translation, the nest parent domain is allocated with
> IOMMU_HWPT_ALLOC_NEST_PARENT flag, and stores information of the v1 page
> table for stage 2 (i.e. GPA->SPA).
>
> Also, only support nest parent domain on AMD system, which can support
> the Guest CR3 Table (GCR3TRPMode) feature. This feature is required in
> order to program DTE[GCR3 Table Root Pointer] with the GPA.
>
> Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> ---
> drivers/iommu/amd/amd_iommu_types.h | 1 +
> drivers/iommu/amd/iommu.c | 26 +++++++++++++++++++++++---
> 2 files changed, 24 insertions(+), 3 deletions(-)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
next prev parent reply other threads:[~2025-10-10 22:38 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-09 23:57 [PATCH v3 00/15] iommu/amd: Introduce Nested Translation support Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 01/15] iommu/amd: Rename DEV_DOMID_MASK to DTE_DOMID_MASK Suravee Suthikulpanit
2025-10-13 10:51 ` Sairaj Kodilkar
2025-10-14 2:08 ` Suthikulpanit, Suravee
2025-10-09 23:57 ` [PATCH v3 02/15] iommu/amd: Make amd_iommu_pdom_id_alloc() non-static Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 03/15] iommu/amd: Make amd_iommu_pdom_id_free() non-static Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 04/15] iommu/amd: Make amd_iommu_device_flush_dte() non-static Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 05/15] iommu/amd: Make amd_iommu_update_dte256() non-static Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 06/15] iommu/amd: Make amd_iommu_make_clear_dte() non-static inline Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 07/15] iommu/amd: Make amd_iommu_completion_wait() non-static Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 08/15] iommufd: Introduce data struct for AMD nested domain allocation Suravee Suthikulpanit
2025-10-09 23:57 ` [PATCH v3 09/15] iommu/amd: Always enable GCR3TRPMode when supported Suravee Suthikulpanit
2025-10-10 22:37 ` Jason Gunthorpe
2025-10-09 23:57 ` [PATCH v3 10/15] iommu/amd: Add support for nest parent domain allocation Suravee Suthikulpanit
2025-10-10 22:38 ` Jason Gunthorpe [this message]
2025-10-09 23:57 ` [PATCH v3 11/15] iommu/amd: Add support for nested " Suravee Suthikulpanit
2025-10-10 22:54 ` Jason Gunthorpe
2025-10-09 23:57 ` [PATCH v3 12/15] iommu/amd: Validate guest DTE for nested translation Suravee Suthikulpanit
2025-10-10 22:55 ` Jason Gunthorpe
2025-10-09 23:57 ` [PATCH v3 13/15] iommu/amd: Refactor persistent DTE bits programming into amd_iommu_make_clear_dte() Suravee Suthikulpanit
2025-10-10 22:56 ` Jason Gunthorpe
2025-10-09 23:57 ` [PATCH v3 14/15] iommu/amd: Refactor logic to program the host page table in DTE Suravee Suthikulpanit
2025-10-10 23:09 ` Jason Gunthorpe
2025-10-21 1:26 ` Suthikulpanit, Suravee
2025-10-09 23:57 ` [PATCH v3 15/15] iommu/amd: Add support for nested domain attach/detach Suravee Suthikulpanit
2025-10-10 23:20 ` Jason Gunthorpe
2025-10-20 23:17 ` Suthikulpanit, Suravee
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