sbi_fwft_set(9)

💅 sbi_fwft_set(9) — like, the Kernel API Manual one, bestie

okay so. welcome to the page for sbi_fwft_set 💖 this is from the Kernel API Manual, and it's about setting a feature on the local hart. yes, local, as in the hart you're literally on right now. main character hart energy only ✨

---

🌸 NAME 🌸

sbi_fwft_set — set a feature on the local hart 🎀

like... that's it. that's the whole job. set the feature. on this hart. slay.

---

✨ SYNOPSIS ✨

int sbi_fwft_set (u32 feature , unsigned long value , unsigned long flags );

three args, returns an int, we move. 🦋

---

🫶 ARGUMENTS 🫶

• feature — the feature ID you wanna set 👑 this is which feature, bestie, choose wisely.
• value — the feature value you're setting it to 🌈 this is what you're setting it to.
• flags — the FWFT feature set flags 🎀 the lil extra vibes that go with the set.

---

🔥 RETURN 🔥

0 on success, and an appropriate linux error code otherwise 😭 so like... check it. fr fr. zero means we ate, anything else means something went sideways and it's giving error.

---

👑 SEE ALSO 👑

kernel file: ./arch/riscv/kernel/sbi.c — go read the source, iykyk 💅

and the whole friend group:

• sbi_console_putchar(9)
• sbi_console_getchar(9)
• sbi_shutdown(9)
• __sbi_set_timer_v01(9)
• sbi_fwft_set_cpumask(9)
• sbi_set_timer(9)
• sbi_send_ipi(9)
• sbi_remote_fence_i(9)
• sbi_remote_sfence_vma_asid(9)
• sbi_remote_hfence_gvma(9)
• sbi_remote_hfence_gvma_vmid(9)
• sbi_remote_hfence_vvma(9)
• sbi_remote_hfence_vvma_asid(9)
• sbi_probe_extension(9)

---

💀 reminder that this all lives under ./arch/riscv/kernel, dated October 2026, and the page itself is sbi_fwft_set(9). don't @ me.

okay that's the whole page, go set some features responsibly, ily, bye 🧚‍♀️💜