iosys_map_is_set(9)

💅 iosys_map_is_set — the "is this thing even on??" check ✨

okay bestie, welcome to iosys_map_is_set(9) from the Kernel API Manual — section 9, we're in kernel-land now 🧚

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🌸 NAME 🌸

iosys_map_is_set — literally just tests if the iosys mapping has been set 🫶

⭐ SYNOPSIS ⭐

bool iosys_map_is_set (const struct iosys_map *map );

🎀 ARGUMENTS 🎀

• map — the iosys_map structure, aka the lil guy we're vibe-checking 💅

🦋 DESCRIPTION 🦋

so here's the tea ☕ — depending on the state of struct iosys_map.is_iomem, this function tests if the mapping has been set. that's it. that's the whole function. it peeks at is_iomem and is like "mmhmm, okay, and is the mapping set tho?" 👑

no cap, that's the entire personality.

🔥 RETURN 🔥

• True if the mapping is been set ✨
• false otherwise 💀

(yes bestie, the manpage literally says "is been set" — we don't fix, we report 📋)

🌈 SEE ALSO 🌈

the whole friend group, fr fr — go read these too:

• Kernel file ./include/linux/iosys-map.h overview(9)
• struct iosys_map(9)
• IOSYS_MAP_INIT_VADDR(9)
• IOSYS_MAP_INIT_VADDR_IOMEM(9)
• IOSYS_MAP_INIT_OFFSET(9)
• iosys_map_set_vaddr(9)
• iosys_map_set_vaddr_iomem(9)
• iosys_map_is_equal(9)
• iosys_map_is_null(9)
• iosys_map_clear(9)
• iosys_map_memcpy_to(9)
• iosys_map_memcpy_from(9)
• iosys_map_incr(9)
• iosys_map_memset(9)
• iosys_map_rd(9)
• iosys_map_wr(9)
• iosys_map_rd_field(9)
• iosys_map_wr_field(9)

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lowkey important: this page lives in ./include/linux, and it's dated October 2026 📅 — so yeah, timestamped from the future, main character energy only 👑✨

k bye bestie, go check your mappings 💖🎀🦋