xe_device_assert_mem_access(9)

📦 version 7.3.1, in nixpkgs unstable

💖 xe_device_assert_mem_access(9) 💖

okay bestie, so this is a page from the Kernel API Manual — yes, that Kernel API Manual — and it's about xe_device_assert_mem_access. it's short, it's sweet, it's giving "tiny function, big feelings" energy. let's get into it 🫶

✨ NAME ✨

xe_device_assert_mem_access — literally just: go look at the current runtime_pm state. that's the whole vibe check. 💅

🌸 SYNOPSIS 🌸

void xe_device_assert_mem_access (struct xe_device *xe );

like, that's it. that's the whole signature. no cap. 🎀

🦋 ARGUMENTS 🦋

  • xe — the xe device instance. your lil device buddy. the one you're checking on. 🥺

💀 DESCRIPTION 💀

okay so here's the tea ☕ — you're supposed to call this before any kind of memory access. it'll splat a debug warning if the device happens to be sleeping at that exact moment. like, "girl wake UP" but in kernel-speak. 😭

but — and this is the important part, bestie, don't skip this — it does not guarantee in any way that the device is going to remain awake. it's a snapshot, not a leash. 📸

the Xe PM runtime get and put functions might get added to the outer bound of the memory access, while this check is intended for inner usage — to splat some warning if the worst case has just happened. so it's the "oop, that already went sideways huh" detector, not the "this definitely won't go sideways" guarantee. 💀

fr fr tho: this is a diagnostic, not a lock. it tells you the vibe at this instant and nothing about the next instant. 🙈

⭐ SEE ALSO ⭐

go read these next, i'm obsessed with how many there are:

🧚 cute lil sign-off 🧚

and that's the whole page, bestie!! this one lives over in ./drivers/gpu/drm/xe and the version on the tin is dated October 2026, all about xe_device_assert_mem_access(9). slay. go check your runtime_pm before you touch memory, i'm begging you 💜🌈👑

📦 where this page comes from