open-iov.git/tools/guest-diag/wall2/fasttick.py, branch masterOpen-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers
https://git.vgpu.io/open-iov.git/atom?h=master2026-10-25T21:53:37+00:00vgsp-sema/wall2: host-triggered VAS pdb discovery (sema_pdb_discover va,pa -> verify the parked COPY_SERVER_PDES candidates against a content-verified ring pair, then fall back to the vidmem walk-root sweep) and a runtime-tunable candidate age-out (sema_vas_cand_ms; the default 15 s ages the client's candidate out exactly when its channels first register); tools: fasttick.py (triggers on the GR0 ring resolution line) and pdbtick.py (content-locates the ring page and triggers) - r706/r707 evidence: three parked candidates (0x11cd3d000/0x11cd48000/0x11cd50000 entries=4), the ring pair appears only at channel registration (the same second as the age-out), ring resolution is racy across runs (r706 rc=0 / r707 rc=-2), the skip starts 145-194 rescues (~8-10 s) after the submit; next run: keep candidates parked + trigger within the window2026-10-25T21:53:37+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-10-25T21:53:37+00:00urn:sha1:4ae5090563a3e1ab5277eb949eed36fe47316410