Open-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers https://git.vgpu.io/open-iov.git/atom?h=m33 2026-09-24T05:58:15+00:00 2026-09-24T05:58:15+00:00 Arthur Hanson Rasmusson arthur@vgpu.io 2026-09-24T05:58:15+00:00 urn:sha1:3b9432714a0515b89309ff2e6c1983690fb67761 - admit {GPU VA -> PA} pairs only when the preceding bytes form a valid client memory descriptor header (type 0/1, CPU+GPU mapped bits), prefer validated pairs over headerless candidates under first-wins dedup, and invalidate the translation cache on every rebuild; fixes stale identity entries shadowing live pool pages and lets the guest UVM channel bring-up complete on its own - capture OS event allocations (class 0x79) and post event records (function 0x1003) into the guest status queue when a channel's busy notification is consumed, with a broadcast fallback, serialized with replies via a queue lock - add BAR0 shadow introspection (dump_bar0/scan_bar0) and guest-side diagnostic scripts for the VM cycle