linux-kernel - Re: [PATCH 4.19 36/54] tee: add tee_shm_alloc_kernel

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Message-ID: <20210811133427.GG5469@sequoia>
Date:   Wed, 11 Aug 2021 08:34:27 -0500
From:   Tyler Hicks <tyhicks@...ux.microsoft.com>
To:     Pavel Machek <pavel@...x.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Sumit Garg <sumit.garg@...aro.org>,
        Jens Wiklander <jens.wiklander@...aro.org>
Subject: Re: [PATCH 4.19 36/54] tee: add tee_shm_alloc_kernel_buf()

On 2021-08-11 09:24:34, Pavel Machek wrote:
> Hi!
> 
> > commit dc7019b7d0e188d4093b34bd0747ed0d668c63bf upstream.
> > 
> > Adds a new function tee_shm_alloc_kernel_buf() to allocate shared memory
> > from a kernel driver. This function can later be made more lightweight
> > by unnecessary dma-buf export.
> 
> 5.10 contains follow-up patches actually using the export, but 4.19
> does not. I believe it should be dropped from 4.19.

That's correct. Those follow-up patches that made use of this function
were only needed back to 5.4.

Tyler

> 
> Best regards,
> 								Pavel
> -- 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany