Re: [PATCH v2 6/8] PCI/TSM: Add pci_tsm_bind() helper for instantiating TDIs

[Jonathan Cameron <jonathan.cameron@huawei.com>]

On Wed, 12 Nov 2025 18:14:44 -0800
Dan Williams <dan.j.williams@intel.com> wrote:

> After a PCIe device has established a secure link and session between a TEE
> Security Manager (TSM) and its local Device Security Manager (DSM), the
> device or its subfunctions are candidates to be bound to a private memory
> context, a TVM. A PCIe device function interface assigned to a TVM is a TEE
> Device Interface (TDI).
> 
> The pci_tsm_bind() requests the low-level TSM driver to associate the
> device with private MMIO and private IOMMU context resources of a given TVM
> represented by a @kvm argument. A device in the bound state corresponds to
> the TDISP protocol LOCKED state and awaits validation by the TVM. It is a
> 'struct pci_tsm_link_ops' operation because, similar to IDE establishment,
> it involves host side resource establishment and context setup on behalf of
> the guest. It is also expected to be performed lazily to allow for
> operation of the device in non-confidential "shared" context for pre-lock
> configuration.
> 
> Co-developed-by: Xu Yilun <yilun.xu@linux.intel.com>
> Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
LGTM to me so
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
though I would like to here from Aneesh on whether the v1 discussion
answered all questions expressed.