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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Fri, 26 Jun 2020 11:47:36 +0300
Message-ID: <CAHp75VcO=pEOhuvwwVxDmkXYmgq+4KR-j0___sbQ4LQ4p=5MDg@mail.gmail.com>
Subject: Re: [Tee-dev] [PATCHv8 1/3] optee: use uuid for sysfs driver entry
To:     Sumit Garg <sumit.garg@linaro.org>
Cc:     Maxim Uvarov <maxim.uvarov@linaro.org>,
        Jerome Forissier <jerome@forissier.org>,
        James Bottomley <James.Bottomley@hansenpartnership.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
        Arnd Bergmann <arnd@linaro.org>,
        "tee-dev @ lists . linaro . org" <tee-dev@lists.linaro.org>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        linux-integrity <linux-integrity@vger.kernel.org>,
        peterhuewe@gmx.de
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On Fri, Jun 26, 2020 at 8:18 AM Sumit Garg <sumit.garg@linaro.org> wrote:
> On Thu, 25 Jun 2020 at 18:22, Maxim Uvarov <maxim.uvarov@linaro.org> wrote:

...

> I guess you missed the point that uuid_t is implemented in BE format
> in the kernel which is compliant as per RFC 4122.

I guess you missed the point. Kernel doesn't have anything special
about these types and does NOT compliant as per RFC.
The only things the kernel distinguishes are a) byte order (always),
and b) version bits when you get a random UUID (whatever you call it).

I guess this discussion takes too much time. The idea is that kernel
types are just for kernel use with as little intrusion as possible.
The main principle, we get something, we carry it w/o modifications
inside the kernel.

So, you may use whatever you want and LE/BE is purely based on a) and b) above.

-- 
With Best Regards,
Andy Shevchenko