Re: [Buildroot] [PATCH] package: fix builds with $(PKG)_FLAT_STACKSIZE

Hi Thomas,

在 2026/8/22 04:24, Thomas Petazzoni 写道:

>> I am working on a fork of Buildroot for HPMicro MCUs:
>> https://github.com/hpm-rs/buildroot
>>
>> I have ported Linux to a new RISC-V MCU called HPM6750 from HPMicro
>> Semiconductor Ltd., and I am adding board support for it to Buildroot.
>>
>> I ran into this problem when trying to run FFmpeg on it. Initially, it
>> failed with a "stack smashing detected" error. To resolve this, I
>> attempted to use FFMPEG_FLAT_STACKSIZE to allocate a larger FLAT stack,
>> which led me to discover the build failure caused by this bug.
>
> Nice! To be honest I had never heard of HPMicro, so it's nice to
> discover.
>
> Do not hesitate to send patches to add support for your
> platform(s). However, for this, we will require that the support for
> your platform is also in the upstream Linux kernel: we don't want to
> carry dozens/hundreds of platform-specific patches in Buildroot.
>
> But aside from your platform-specific support, do not hesitate to
> submit any noMMU fixes you might have, like the one you already
> submitted.

Since there is an ongoing discussion about removing noMMU support from
the Linux kernel[1], I do not plan to upstream the HPMicro platform
support there.

However, I will continue to submit any noMMU fixes to Buildroot whenever
I find them.

Thanks for your advice!

Best Regards,
Fengwei Tan

[1] https://lwn.net/Articles/1035727/
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