iosys_map_memset(9)

💖 iosys_map_memset 💖

hiii bestie 🫶 welcome to iosys_map_memset from the Kernel API Manual. This is the page for the helper that does a memset on an iosys_map, and we’re gonna break it down together — no cap ✨

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🌸 NAME 🌸

iosys_map_memset — Memset iosys_map 💅

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✨ SYNOPSIS ✨

okay so here’s the signature, exactly as it is, periodt:

void iosys_map_memset (struct iosys_map *dst , size_t offset , int value
, size_t len );

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🎀 ARGUMENTS 🎀

• dst — The iosys_map structure. That’s the map we’re working with 💖
• offset — Offset from dst where to start setting value.
• value — The value to set.
• len — The number of bytes to set in dst.

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🦋 DESCRIPTION 🦋

Set value in iosys_map ✨ Depending on the buffer’s location, the helper picks the correct method of accessing the memory. It’s giving “I know where the buffer lives, so I know how to access it” energy, and honestly? Iconic 💅

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🔥 SEE ALSO 🔥

• 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_is_set(9)
• iosys_map_clear(9)
• iosys_map_memcpy_to(9)
• iosys_map_memcpy_from(9)
• iosys_map_incr(9)
• iosys_map_rd(9)
• iosys_map_wr(9)
• iosys_map_rd_field(9)
• iosys_map_wr_field(9)

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xoxo, signed off from ./include/linux, dated October 2026, and this whole vibe is iosys_map_memset(9) 🫶💖🎀