STRUCT I915_TTM_MEMCPY_ARG(9)

✨ struct i915_ttm_memcpy_arg(9) ✨

Welcome to the Kernel API Manual page for struct i915_ttm_memcpy_arg(9), bestie. This is giving “tiny struct, big memcpy responsibilities,” and we’re gonna go through every single field together. 🫶

🎀 NAME 🎀

struct i915_ttm_memcpy_arg — the argument for the bo memcpy functionality. Periodt. 💅

🦋 SYNOPSIS 🦋

Here’s the whole struct, exactly as it is, no edits because we respect the source:

       struct i915_ttm_memcpy_arg {
           union {
             struct ttm_kmap_iter_tt tt;
             struct ttm_kmap_iter_iomap io;
           } _dst_iter, _src_iter;
           struct ttm_kmap_iter *dst_iter;
           struct ttm_kmap_iter *src_iter;
           unsigned long num_pages;
           bool clear;
           struct i915_refct_sgt *src_rsgt;
           struct i915_refct_sgt *dst_rsgt;
        };

🧚 Members 🧚

• _dst_iter — the storage space for the destination kmap iterator. She’s the reserved spot, okay? 💖
• _src_iter — the storage space for the source kmap iterator. Matching energy. ✨
• dst_iter — a pointer to the destination kmap iterator. Very “where we’re going” of it. 🎀
• src_iter — a pointer to the source kmap iterator. Very “where we came from” of it. 🦋
• num_pages — the number of pages. Literally the page count, no cap. 🌸
• clear — whether to clear instead of copy. That’s the whole vibe check right there. 💅
• src_rsgt — refcounted scatter-gather list of source memory. Fancy list, refcounted and everything. 🔥
• dst_rsgt — refcounted scatter-gather list of destination memory. Same energy, destination edition. 👑

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c
• Selftest failure modes for failsafe migration:(9)
• i915_ttm_adjust_domains_after_move(9)
• i915_ttm_adjust_gem_after_move(9)
• i915_ttm_move_notify(9)
• struct i915_ttm_memcpy_work(9)
• i915_ttm_move(9)
• i915_gem_obj_copy_ttm(9)

Okay bestie, cute sign-off time 💖: this one comes from ./drivers/gpu/drm/i915/gem, dated October 2026, and it’s still out here being struct i915_ttm_memcpy_arg(9). Slay. 🎀🫶