open-iov.git/tools/guest-diag/invd.py, branch reg-probeOpen-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers
https://git.vgpu.io/open-iov.git/atom?h=reg-probe2026-09-30T05:52:57+00:00guest-diag: bpz7 - split membar hook failure into lookup vs ucode load2026-09-30T05:52:57+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-09-30T05:52:57+00:00urn:sha1:2506625803f1fe4c65df059ae82342efdfa7decc
Host oracle (real TU104, 570.211): FUN_0035a4d0(0x13,7,5) succeeds because
the 3-entry remap table at 0x3dc5b80 maps (7,5)->(7,0); the guest has the
same table. bpz7 breaks before/after the lookup and the FUN_00e21850 ucode
load in FUN_005d7e70 to see which one fails in the guest. Also fix invd.py's
lookup address (0x25a4d0, not 0x35a4d0).
guest-diag: bpz6/invd - read the live arch/impl and test the WAR-ucode lookup2026-09-30T05:38:27+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-09-30T05:38:27+00:00urn:sha1:7cc6c6dbc409ef3b7901dc803ff5656833623e34
Run #5 named the failing hook: idx=3 FUN_005d7e70 ('membar_war_bug2022401')
returned 999; its only source is FUN_0035a4d0(0x13, dev+0xc50, dev+0xc54)
returning NULL or the ucode load failing. bpz6 reads the live device state
arch/impl at the failure and evaluates the lookup in-process, scanning
(arch,rev) pairs to show which WAR-ucode descriptors exist; invd.py is the
standalone same-probe for a parked cdt.