STRUCT EXECMEM_RANGE(9)

💅 NAME 💅

okay so bestie, welcome to the Kernel API Manual — this page is all about struct execmem_range, which is literally the definition of an address space suitable for code and related data allocations. yes, that's the whole vibe: it's the blueprint for where your code-adjacent stuff gets to live. 🎀

✨ SYNOPSIS ✨

here's the struct in all its glory, copy-paste energy, do not touch a single character:

struct execmem_range {
    unsigned long   start;
    unsigned long   end;
    unsigned long   fallback_start;
    unsigned long   fallback_end;
    pgprot_t pgprot;
    unsigned int    alignment;
    enum execmem_range_flags flags;
 };

🌸 Members 🌸

okay so let's meet the cast, one field at a time, main character energy only ✨

• start — the address space start. that's it, that's the beginning. 🫶
• end — the address space end, and ngl it's inclusive, so don't come for her boundaries. 💀
• fallback_start — start of the secondary address space range for fallback allocations, on architectures that require it. lowkey the backup plan. 🙈
• fallback_end — end of that secondary address space, also inclusive. symmetric queen. 👑
• pgprot — permissions for memory in this address space. she decides what you're allowed to do. 🔥
• alignment — alignment required for text allocations. everything lined up, no chaos, we love to see it. 🦋
• flags — options for memory allocations for this range. the little extras, the seasoning. 🍓

🧚 SEE ALSO 🧚

go read these next, i'm obsessed, it's giving "required reading" but make it cute:

• Kernel file ./include/linux/execmem.h
• enum execmem_type(9)
• enum execmem_range_flags(9)
• execmem_fill_trapping_insns(9)
• execmem_restore_rox(9)
• struct execmem_info(9)
• execmem_arch_setup(9)
• execmem_alloc(9)
• execmem_alloc_rw(9)
• execmem_free(9)
• execmem_vmap(9)
• execmem_is_rox(9)

aaaand that's the page, bestie 💖 this lil icon comes to you straight from ./include/linux, dated October 2026 — slay, periodt, go allocate responsibly 🌈⭐