Hi Jorge,

On Sun, 27 Sept 2026 at 00:09, Jorge Ramirez
<[email protected]> wrote:
>
> On 26/09/26 22:41:00, Jorge Ramirez wrote:
> > On 25/09/26 12:59:28, Ilias Apalodimas wrote:
> > > Thanks for the detailed analysis.
> > >
> > > I am pulling in Jens for OP-TEE and I'll have a closer look next week as 
> > > well.
> >
> > the concernt I read - please correct me if I am wrong - is that this code 
> > affects
> > downstream projects.
> >
> > This is just not acceptable to me - downstream implementations should have 
> > been
> > posted to prevent exactly these kind issues.
> >
> > We spent  time and effort doing an implementation and sharing it with the
> > community - it wouldnt be fair to us to block this merge on the basis of
> > downstream projects being impacted.
> >
> >
>
> in summary and to be very clear
>
> 1- the upstream CID derivation is the u-boot/op-tee contract that
> matches mainline linux's ufshcd_create_device_id(). The contract is an
> OP-TEE-defined ABI, not a Global Platform spec.
>
> 2. Moreover CID-key is OP-TEE's own HUK-based derivation, not GP, not JEDEC.
>
> 3- Nothing here blocks anyone from overriding the static ufs_rpmb_build_cid()
> downstream.
>
> 3- if downstream scheme differs, that's the cost of having kept it out of 
> tree,
> not a reason to hold this series for speculative plug-in infrastructure with a
> single backend.

+1. Macpaul is there anything else you can review apart from the
downstream breakage. TBH since you didn;t bother upstreaming that,
objecting to code that adds real support doesn't really stand as an
arguement.

Jorge, I did a quick pass and I don't see any big issues with the
series. I'll do another pass later this week and send a PR if the CI
agrees.

Cheers
/Ilias

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