Function run_pt_cache_bench 

pub fn run_pt_cache_bench(c: &mut Criterion, blob: &[u8], label: &str)

Run the page-table-cache criterion bench: endpoint 0 host_calls the resident B a swept number of times. Publishes the top once (the kernel stays warm), runs an n=1/2 sanity check, then sweeps {10, 100, 1000} CALLs with Throughput::Elements(n) so the reported figure is per-CALL.