[Zenodeon]

What

Windows heap-mirror regressions in upstream #7647 do not both execute: agc_sparse_heap_mirror_budget lacks the DLL search path, and agc_driver_resident_heap_mirror uses the non-Windows write-watch availability probe and allocates heaps outside the Windows guest arena.

Register the budget test with the existing Windows DLL-path setup and 30-second timeout. Allocate and commit Windows resident-test heaps through GuestArena, reset/release them on destruction, preserve the explicit same-address reuse case, and check the arena's write-watch capability on Windows. The Linux allocation/probe paths and every existing assertion are retained. Production code is unchanged.

This contribution targets fma-rc:fix/agc-heap-mirror-resident, the source branch of upstream boykopovar#7647 at 0b9b519a5e72b3f807399541d6de5ce6b421bd9a. It addresses LeandroLP23's Windows report. The original branch is not owned by this account, so this is a two-file contribution for its author to merge or cherry-pick. Fix commit: 11e02f25438bcf809fcddad57f643ff73ca42f7e.

Tested

Windows 11 build 26200, Intel Core i7-13700, NVIDIA GeForce RTX 4070 / driver 610.88; WinLibs GCC 15.2.0, Release, SPIR-V Tools enabled. Focused targets rebuilt from source. Candidate: 11e02f25438bcf809fcddad57f643ff73ca42f7e on original boykopovar#7647 head 0b9b519a5e. Separate frozen main baseline: 275e8967978f489eb950b8cdb4d5b40ecf441934.

Reported regression	Original PR, unmodified	With this change
agc_sparse_heap_mirror_budget	Exit 0xc0000135; no DLL-path modification; effectively unlimited timeout	Pass, 0.22 s; CTest supplies DLL path and reports timeout 30
agc_driver_resident_heap_mirror	Skipped: no guest write watch	Executes and passes, 0.75 s

No manual unpatched-library PATH workaround is used for the passing budget test. The resident test retains its sparse held-byte checks, real GPU reads/stores and guest-byte checks, unchanged refresh, same-address allocation replacement, joined-import mirror cleanup, and whole-copy fallback when sparse address space is unavailable.

12 unique focused tests pass, zero skips. Seven shared graphics/mirror unit tests pass on main (9.12 s) and candidate (8.01 s). The same real Vulkan BDA-device and array-layer tests pass on main (4.78 s) and candidate (4.50 s). The three additional PR-specific tests are resident heap mirror, sparse mirror budget and queue plan; all pass. The four-test extended device group (including the shared BDA test) passes in 5.21 s. Every individual test finishes below 30 seconds.

All compared runs use ANYPS5_REQUIRE_VULKAN=1, ANYPS5_NO_SHADER_CACHE=1, VK_INSTANCE_LAYERS=VK_LAYER_KHRONOS_validation and the same RTX 4070. The shared graphics/mirror unit tests use mocked interfaces; hardware coverage comes from the real Vulkan controls and resident fixture. Loader logs confirm Khronos 1.4.304 loads for the hardware runs, with no missing-layer diagnostics. Matched hardware logs contain identical existing VUID-VkDeviceCreateInfo-pNext-pNext diagnostics for structure 1000574000 unknown to this older layer. The additional resident test reports the same known diagnostic; no new validation-error signatures are introduced. Zero total validation errors is not claimed.

Diff and conventions checks against the contribution's target branch pass. The required stale-fork origin/main check was attempted and fails with Windows WinError 206; the actual target check succeeds. tools/pr_overlap.py --branch codex/resident-windows-tests --repo fma-rc/AnyPS5 --base fix/agc-heap-mirror-resident reports no overlap.

This is Windows test coverage, not a new gameplay, memory saving or FPS measurement. Native AMD, Linux and other vendors were not rerun for this test-only contribution.

Checklist

• Based on current main; no other open PR implements the same functions (this contribution targets the current fix(agc): bind heap mirrors only where the guest holds bytes boykopovar/AnyPS5#7647 source branch; main is tested separately)
• One topic per PR; follow-ups go in a new PR
• No comments in code except technical debt
• Unimplemented paths throw (NotImplemented_nid_no_patch); silent stubs are listed under Silent stubs in their library's technical debt file
• No notes, investigation .md files or images added to the repository (attach them to this PR)
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none
• Fixes: none
• Unblocks: none
• GPUs tested: NVIDIA GeForce RTX 4070, driver 610.88, Windows 11 build 26200
• AI-assisted: yes, OpenAI Codex

[fma-rc]

Cherry-picked into fix/agc-heap-mirror-resident as 2d50c08 (you as author), thanks.