linux-kernel - Re: [RFC 1/7] tee: optee: allow kernel pages to register as shm

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Message-ID: <20190613151257.GA18488@linux.intel.com>
Date:   Thu, 13 Jun 2019 18:12:57 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Sumit Garg <sumit.garg@...aro.org>
Cc:     keyrings@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org, jens.wiklander@...aro.org,
        corbet@....net, dhowells@...hat.com, jejb@...ux.ibm.com,
        zohar@...ux.ibm.com, jmorris@...ei.org, serge@...lyn.com,
        ard.biesheuvel@...aro.org, daniel.thompson@...aro.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        tee-dev@...ts.linaro.org
Subject: Re: [RFC 1/7] tee: optee: allow kernel pages to register as shm

On Thu, Jun 13, 2019 at 04:00:27PM +0530, Sumit Garg wrote:
> Kernel pages are marked as normal type memory only so allow kernel pages
> to be registered as shared memory with OP-TEE.
> 
> Signed-off-by: Sumit Garg <sumit.garg@...aro.org>

Just out of pure interest why this was not allowed before?

/Jarkko