gmc_v9_0_flush_gpu_tlb(9)

💅 gmc_v9_0_flush_gpu_tlb(9) — like, the kernel API manual bestie ✨

okay so first things first: this is a page from the Kernel API Manual, section 9, and the star of the show is gmc_v9_0_flush_gpu_tlb — say that three times fast, i dare you 😭. it's a function that does a TLB flush with a certain type, and honestly? she ate. let's get into it 🎀

✨ NAME ✨

gmc_v9_0_flush_gpu_tlb — tlb flush with certain type 🦋

🌸 SYNOPSIS 🌸

void gmc_v9_0_flush_gpu_tlb (struct amdgpu_device *adev , uint32_t vmid
, uint32_t vmhub , uint32_t flush_type );

like yes, that's the whole signature, no cap. four args, returns nothing (void), it's giving "i just do my job and leave" 💅

🫶 ARGUMENTS 🫶

• adev — an amdgpu_device pointer. it's literally the device, the main character of the whole amdgpu situation 👑
• vmid — the vm instance to flush. uint32_t, and yes it's the specific VM you're targeting, not a vibe in general 💖
• vmhub — which hub to flush. like, which one, bestie, you gotta pick 🌀
• flush_type — the flush type. that's the type. of the flush. the certain type from the NAME section, we love a callback 🎀

🔥 DESCRIPTION 🔥

so what does she actually do? she flushes the TLB for the requested page table, using a certain type ✨ that's it, that's the whole thing. flush_type decides the how, the page table decides the what, and vmhub decides the where. trio energy fr fr 💜

ngl this one's short and sweet — the docs keep it minimal on purpose, so don't go reading extra behaviour into it that isn't written here 🙈

👀 SEE ALSO 👀

• the kernel file itself: ./drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c — go read the source, iykyk 📖
• gmc_v9_0_use_invalidate_semaphore(9)
• gmc_v9_0_flush_gpu_tlb_pasid(9)
• gmc_v9_0_mc_init(9)
• gmc_v9_0_save_registers(9)
• gmc_v9_0_restore_registers(9)
• gmc_v9_0_gart_enable(9)
• gmc_v9_0_gart_disable(9)

like, the whole gmc_v9_0 friend group showed up to the party 🌈🫶

and that's the page!! 💖 brought to you by the source dir ./drivers/gpu/drm/amd/amdgpu, dated October 2026, living in section 9 of the Kernel API Manual. mwah, go flush something responsibly bestie 😭💅