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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: John Ernberg <john.ernberg@actia.se>
Cc: "andreas@rammhold.de" <andreas@rammhold.de>,
	"davem@davemloft.net" <davem@davemloft.net>,
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Subject: Re: [PATCH v8 0/6] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys
Date: Thu, 5 May 2022 19:33:45 +0200	[thread overview]
Message-ID: <09e2552c-7392-e1da-926b-53c7db0b118d@pengutronix.de> (raw)
In-Reply-To: <20220505145756.2492566-1-john.ernberg@actia.se>

Hello John,

On 05.05.22 16:58, John Ernberg wrote:
> Gave this a go on iMX8QXP with Linux 5.17.5 and I can't quite get it working.
> 
> I get -ENODEV from add_key() via keyctl. When I traced it in dmesg I couldn't
> get an as clear picture as I would like but CAAM (and thus possibly JRs?)
> initialzing after trusted_key.
> 
> dmesg snips:
> [    1.296772] trusted_key: Job Ring Device allocation for transform failed
> ...
> [    1.799768] caam 31400000.crypto: device ID = 0x0a16040000000100 (Era 9)
> [    1.807142] caam 31400000.crypto: job rings = 2, qi = 0
> [    1.822667] caam algorithms registered in /proc/crypto
> [    1.830541] caam 31400000.crypto: caam pkc algorithms registered in /proc/crypto
> [    1.841807] caam 31400000.crypto: registering rng-caam
> 
> I didn't quite have the time to get a better trace than that.

I don't see a crypto@31400000 node upstream. Where can I see your device tree?
Initcall ordering does the right thing, but if CAAM device probe is deferred beyond
late_initcall, then it won't help.

This is a general limitation with trusted keys at the moment. Anything that's
not there by the time of the late_initcall won't be tried again. You can work
around it by having trusted keys as a module. We might be able to do something
with fw_devlinks in the future and a look into your device tree would help here,
but I think that should be separate from this patch series.

Please let me know if the module build improves the situation for you.

Cheers,
Ahmad

>
> Best regards // John Ernberg


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  reply	other threads:[~2022-05-05 17:34 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-28 14:21 [PATCH v8 0/6] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys Ahmad Fatoum
2022-04-28 14:01 ` [PATCH v8 1/6] KEYS: trusted: allow use of TEE as backend without TCG_TPM support Ahmad Fatoum
2022-04-28 14:01 ` [PATCH v8 2/6] KEYS: trusted: allow use of kernel RNG for key material Ahmad Fatoum
2022-04-28 14:01 ` [PATCH v8 3/6] crypto: caam - add in-kernel interface for blob generator Ahmad Fatoum
2022-05-03 18:24   ` Michael Walle
2022-05-04  6:39     ` Ahmad Fatoum
2022-04-28 14:01 ` [PATCH v8 4/6] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys Ahmad Fatoum
2022-04-28 14:01 ` [PATCH v8 5/6] doc: trusted-encrypted: describe new CAAM trust source Ahmad Fatoum
2022-05-04  4:15   ` Jarkko Sakkinen
2022-04-28 14:01 ` [PATCH v8 6/6] MAINTAINERS: add myself as CAAM trusted key maintainer Ahmad Fatoum
2022-05-04  4:24   ` Jarkko Sakkinen
2022-05-04  4:57     ` Ahmad Fatoum
2022-05-05 14:58 ` [PATCH v8 0/6] KEYS: trusted: Introduce support for NXP CAAM-based trusted keys John Ernberg
2022-05-05 17:33   ` Ahmad Fatoum [this message]
2022-05-07 21:30     ` John Ernberg
2022-05-11 10:44       ` Ahmad Fatoum

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