i915_ttm_resource_mappable(9)

💖 NAME 💖

Hii bestie! Welcome to the Kernel API Manual 💖 This page is all about i915_ttm_resource_mappable — it returns true if the ttm resource is CPU accessible, periodt.

✨ SYNOPSIS ✨

bool i915_ttm_resource_mappable (struct ttm_resource *res );

🎀 ARGUMENTS 🎀

• res — the TTM resource you're checking, bestie. That's the one.

🦋 DESCRIPTION 🦋

Okay so here's the tea: this is interesting on small-BAR systems, where we may encounter lmem objects that can't be accessed via the CPU. That's the whole situation — no cap. 💅

🌸 SEE ALSO 🌸

• Kernel file: ./drivers/gpu/drm/i915/gem/i915_gem_ttm.c
• struct i915_ttm_tt(9)
• i915_ttm_sys_placement(9)
• i915_ttm_free_cached_io_rsgt(9)
• i915_ttm_purge(9)
• i915_ttm_resource_get_st(9)
• i915_ttm_driver(9)
• Migration vs eviction(9)
• i915_ttm_adjust_lru(9)

This lil page lives in ./drivers/gpu/drm/i915/gem, and it's stamped October 2026 — xoxo, mwah 💋✨