Constant Q4K_MMQ_SMEM 

pub const Q4K_MMQ_SMEM: u32 = 57856;

2026-09-25: Dynamic shared memory of the Q4_K MMQ kernel at mmq_x = mmq_y = 128: mmq_get_nbytes_shared in q4k_vendor/mmq.cuh with an x tile of 76 ints per row. Above 48 KiB, so the registry raises the kernel’s dynamic shared memory limit (registry.rs).