musl - Future plans for RISC-V Zicfiss/Zicfilp support?

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Message-ID: <97307c63-b97e-4231-9e61-090d50e56616@163.com>
Date: Thu, 13 Nov 2025 17:19:08 +0800
From: Da Xie <xxie_xd@....com>
To: musl@...ts.openwall.com
Cc: xxie_xd <xxie_xd@....com>
Subject: Future plans for RISC-V Zicfiss/Zicfilp support?

Hi everyone,

I'm new to the musl community and was exploring its support for RISC-V.

I was wondering if there are any plans to support the Zicfiss (shadow
stack) and/or Zicfilp (landing pads) extensions in the future. I
understand these are relatively new extensions aimed at improving
security (similar in spirit to Arm's GCS).

I did a search on the mailing list archive and found a discussion about
Arm64 GCS from last year, but nothing specific to RISC-V.

Any insights, comments, or pointers to existing discussions would be
greatly appreciated.

Thanks,
Da Xie

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