Re: [PATCH v3 03/19] crypto: cmh - add key provisioning and management

[Krzysztof Kozlowski <krzk@kernel.org>]

On Thu, Aug 06, 2026 at 12:55:02PM -0700, Saravanakrishnan Krishnamoorthy wrote:
> From: Alex Ousherovitch <aousherovitch@rambus.com>
> 
> Add the CMH key management subsystem:
> 
> - Key provisioning: create, import, derive, and destroy hardware keys
>   stored in the CMH datastore
> - System object management: allocate and free CMH system objects
> - Management ioctl interface (/dev/cmh_mgmt): ioctl commands
>   covering key lifecycle, KIC key derivation, PKE operations (RSA,
>   ECDSA, ECDH, EdDSA), PQC operations (ML-KEM, ML-DSA, SLH-DSA),
>   SM2, EAC, and DRBG reseeding
> - SM2 ioctl handlers: SM2 encrypt, decrypt, sign, and key exchange
>   -- operations that require multi-step protocol flows not
>   expressible through the standard crypto API sig interface
> - UAPI header: cmh_mgmt_ioctl.h (ioctl definitions and structures)

And we need custom IOCTL interface because existing kernel interfaces are ... ?

Say something useful in commit msg, e.g. WHY you are doing this, not
what you are doing.

Best regards,
Krzysztof