Re: [meta-freescale] Mismatch between linux-imx-headers version and toradex kernel in current git master

Em ter., 29 de mar. de 2022 às 15:03, Carlos Rafael Giani via
lists.yoctoproject.org <[email protected]>
escreveu:

> When building code with support for DMA-BUF heaps (
> https://github.com/torvalds/linux/blob/master/include/uapi/linux/dma-heap.h
> ), I noticed that my code was detecting the dma-heap.h userspace API header
> in the Yocto SDK, while on the running system, no dma-heap was found.
>
> It turns out that the linux-imx-headers (which contain the dma-heap.h
> header) are from linux-imx 5.10, while the Toradex kernel is at 5.4.
>
> This makes me wonder how to address this. I can think of two options:
>
> 1. Recipes of software that supports DMA-BUF heaps needs to have a
> "dma-heap" packageconfig that is explicitly disabled on systems with
> pre-5.6 kernels (5.6 is when DMA-BUF heaps were added as part of the
> userspace API).
>
> 2. Somehow check for the actual kernel version in the recipe and turn off
> DMA-BUF heaps if the version is <5.6.
>
> Furthermore, I am concerned that such version mismatches between these two
> recipes could lead to other subtle errors.
>
> Is a linux-toradex upgrade to 5.10 planned? Or is there a smarter way to
> address such version discrepancies?
>
Carlos, please open an issue about this in meta-freescale so we can do the
discussion there.

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