isa_string_contains(9)

🌸 isa_string_contains (9) — from the Kernel API Manual, bestie 🌸

okay so real talk, this one is a lil function from the Kernel API Manual and it is so straightforward it's honestly kind of iconic for it. no cap.

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✨ NAME ✨

isa_string_contains — the vibe check that tells you whether an isa string contains an extension 💅

✨ SYNOPSIS ✨

bool isa_string_contains (const char *isa_str , const char *ext_name );

like. look at it. two const char *s and a bool. she's lowkey minimal and we respect her for it 🫶

✨ ARGUMENTS ✨

• isa_str — the isa string you want to search, bestie 🔍 this is the thing getting looked at
• ext_name — the extension you're hunting for 👑 this is the thing doing the looking-for

✨ DESCRIPTION ✨

so here's the whole tea ☕: this function returns true if the extension is in the given isa string, and false otherwise. that's it. that's the entire function. no plot twists, no hidden lore, fr fr 💀

like genuinely, returns true when the extension is in the given isa string, false otherwise. slay and simple. periodt.

✨ SEE ALSO ✨

go read these next, i'm obsessed with the whole friend group honestly 🦋

• the kernel file ./arch/riscv/kernel/pi/fdt_early.c 📁 (yes bestie, an actual file path in SEE ALSO, we love a crossover)
• fdt_device_is_available(9)
• early_cpu_isa_ext_available(9)
• fdt_early_match_extension_isa(9)
• set_satp_mode_from_fdt(9)

heads up! this is a <9> kernel API page, so if you're the kind of person who reads manpages for fun (no judgement, literally same) you already know what's up 😌

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okay that's the whole page, go forth and check your isa strings bestie 💖

this absolute gem lives over in ./arch/riscv/kernel/pi and the page is dated October 2026 — mwah, catch you in the next manpage, love you bye 🎀🧚✨