linux-kernel - Re: libata: sysctl knob for enabling tpm/opal at runtime

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Date:   Thu, 6 Jun 2019 16:20:46 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Christoph Hellwig <hch@...radead.org>,
        "Enrico Weigelt, metux IT consult" <info@...ux.net>
Cc:     linux-kernel@...r.kernel.org, axboe@...nel.dk,
        linux-ide@...r.kernel.org
Subject: Re: libata: sysctl knob for enabling tpm/opal at runtime

On 05.06.19 21:23, Christoph Hellwig wrote:
> On Wed, Jun 05, 2019 at 01:36:25PM +0200, Enrico Weigelt, metux IT consult wrote:
>> Hello folks,
>>
>>
>> here's a patchset that allows enabling libata's tpm features (opal)
>> at runtime. Until now we need to boot with special kernel parameter,
>> in order to use OPAL - this patch also adds a sysctl knob for that.
> 
> Or you can use the block/sed-opal.c code which doesn't require the
> tweak, and really is the proper way forward to use OPAL.

You're referring to the OPAL ioctl()s ?

hmm, it seems that sed-util doesn't use them at all, but directly
sends raw ata commands.

Shall I use a different userland tool ?


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287