open-iov.git - Open-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers

	Commit message (Collapse)	Author	Age
*	spdx: add BSD-3-Clause identifiers to userspace/tools/scripts sources	Arthur Hanson Rasmusson	4 days
\| \| \| \| \| \| \| \| \| \| \|	Sweep of the 155 tracked C/Python/shell files under userspace/ (excluding the MIT-licensed vendored userspace/extern/), tools/ and scripts/ that had no per-file license identifier. Each gains the minimal two-line header in the area's existing form: 'SPDX-License-Identifier: BSD-3-Clause' plus 'Copyright (c) 2026 Open-IOV contributors'; shebang and coding lines stay first. No other content touched. kernel/** is deliberately out of scope (recorded as a follow-up in CODESTD-REPORT-2026-10-08.md): its SPDX coverage and MODULE_LICENSE normalization need their own GPL-2.0 pass.
*	gsp-phys: P6a - real copy engine reads/writes guest RAM pages	Arthur Hanson Rasmusson	10 days
	- file-backed guest RAM (launcher memory-backend-file share=on) and in-kernel GPA->HPA translation through the shared file page cache (read_cache_page + page_to_phys + pfn_valid), opened O_LARGEFILE; new default-off gsp_phys_guest_mem parameter - debugfs gsp-phys-guest-ram (path + gpa/off/size ranges) and gsp-phys-guest-gpa (one pinned GPA per boot); rm-call triggers 6/7 run host->guest and guest->host 4 KiB CE copies; trigger 8 is a PTE self-test through a fresh slot - guest page-table slots are pre-built during ladder stage 3: runtime PTE writes into an already-walked page-table line are not observed without a TLB invalidate - guest RAM layout (q35 4.2, 4 GiB): below-4G GPA == file offset, above-4G offset = GPA - 0x80000000 (2 GiB PCI hole) - tests: tools/test/gpage_test.c guest probe; docs + STATE-CURRENT record the live green (G2H/W2G with semaphore release, guest observed the write, smoke ALL OK 64/64, clean latched release)