STRUCT RPROC_MEM_ENTRY(9)

💅 struct rproc_mem_entry(9) 💅

okay bestie, welcome to the Kernel API Manual — literally the group chat where the kernel explains its own data structures. today's main character is struct rproc_mem_entry, no cap. ✨

---

🌸 NAME 🌸

struct rproc_mem_entry — it's a memory entry descriptor. that's the whole vibe. one lil' struct holding all the deets about a memory entry. iconic.

---

🦋 SYNOPSIS 🦋

like, this is the shape of it. copy-paste exactly, don't you dare touch a semicolon:

struct rproc_mem_entry {
    void *va;
    bool is_iomem;
    dma_addr_t dma;
    size_t len;
    u32 da;
    void *priv;
    char name[32];
    struct list_head node;
    u32 rsc_offset;
    u32 flags;
    u32 of_resm_idx;
    int (*alloc)(struct rproc *rproc, struct rproc_mem_entry *mem);
    int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);
 };

---

🎀 Members 🎀

okay so each of these fields has a job, and honestly they all ate:

• va — the virtual address. the address you actually see. main character energy fr.
• is_iomem — a bool that says whether this is io memory. that's it. that's the whole field.
• dma — the dma address, type dma_addr_t. the DMA's address, obviously 💅
• len — the length, measured in bytes. bytes!! not kilobytes, not vibes.
• da — device address. different address, different lane, same energy.
• priv — associated data. it's giving "miscellaneous stuff we're carrying around" 🫶
• name — the associated memory region name, and it's optional. it's a char name[32] so like... 32 chars max, bestie, know your limits.
• node — a struct list_head list node. it's how this struct links up with its friends 🔗
• rsc_offset — the offset in the resource table. gotta know where you sit in the table, periodt.
• flags — iommu protection flags. protection = self care, honestly.
• of_resm_idx — the reserved memory phandle index. yes that's a real thing. no I will not explain the name better, that's literally what it is.
• alloc — a function pointer, the specific memory allocator function. signature: int (*alloc)(struct rproc *rproc, struct rproc_mem_entry *mem);
• release — also a function pointer, and it releases the associated memory. cleanup queen. signature: int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);

💀 reminder that alloc and release are pointers — if they're not set up right, that's a you problem, and the kernel will absolutely let you know.

---

⭐ SEE ALSO ⭐

go read these next, iykyk. all of them live in the kernel file ./include/linux/remoteproc.h:

• enum rsc_handling_status(9)
• struct rproc_ops(9)
• enum rproc_state(9)
• enum rproc_crash_type(9)
• enum rproc_dump_mechanism(9)
• struct rproc_dump_segment(9)
• enum rproc_features(9)
• struct rproc(9)
• struct rproc_subdev(9)
• struct rproc_vring(9)
• struct rproc_vdev(9)

---

and that's the whole page, bestie 🧚 no notes, absolute slay.

source: ./include/linux · date: October 2026 — mwah, catch you in the next manpage 💖🎀🦋