[xXPBSXx]

What

Resonance: A Plague Tale Legacy (PPSA30601) stops at sceKernelGetPageTableStats not implemented once its imports are exported (#4067). The call now answers instead of throwing:

• Signature int sceKernelGetPageTableStats(int* cpuTotal, int* cpuAvailable, int* gpuTotal, int* gpuAvailable), as in OpenOrbis' libkernel.h, the Orbital type database and SharpProspero (KernelMemoryQuery.cs: "how many page-table entries the module was given for each side and how many are left").
• It reports 2048 entries on each side (a 4 GiB pool of 2 MiB entries, the constants of KytyPS5's KernelGetPageTableStats) and all of them available. KytyPS5 additionally counts the 2 MiB entries of the committed ranges as used; this PR does not. A null pointer returns SCE_KERNEL_ERROR_EFAULT, as in KytyPS5.
• The numbers are KytyPS5's, not measured on a console. Nothing in the SDK headers or the other sources I found says what the console reports; if a plausible value from another emulator is not acceptable here, the alternative is to keep the throwing stub, with the cost that PPSA30601 stays stopped at this call. The entry is in the TechnicalDebt silent-stub list with these limits.

CheckPageTableStats in GuestMemory.cpp covers the answer and the four null-pointer cases; without the change the call throws and the test aborts.

Tested

• Windows, MinGW GCC 15.2.0, on current main with fix(libkernel): restore Windows select build for Demons Souls testing #4021 applied (the Windows build of main is broken by HostPoll; unrelated to this change): ctest -R guest_memory passes; tools/check_conventions.py --base upstream/main passes. guest_memory_pool_stats was not built here.
• Not tested: running PPSA30601 with this change (its other imports are in fix(exports): export the calls PPSA30601 imports #3814, fix(exports): export the calls PPSA02530 imports #3799 and fix(exports): export the calls PPSA07411 imports #3773, so the title cannot reach the call from main alone), and what the title does with the numbers.

Checklist

• Based on current main; no other open PR implements the same functions
• 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 in TechnicalDebt
• 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
• AI-assisted: yes (Claude Code)

[github-actions]

Progress report (529f7bf → d283d48)

📈 System libraries: 87.39% (+0.02%, +1 implemented functions)

✅ 1 implemented

Library	Name
libkernel	sceKernelGetPageTableStats

[xXPBSXx]

Merged current main into the branch (conflict in core/libs/tests/GuestMemory.cpp only, both new test calls kept: CheckPageTableStats and CheckMunmapOverUnmappedPages). Windows, GCC: guest_memory tests pass, tools/check_conventions.py --base upstream/main passes. No code change.

AI-assisted (Claude Code).

[oneandonlydean]

Please rebase onto main instead of merging it in: 5cec557 is a merge commit, and branches here carry none. No code change needed.

[xXPBSXx]

Rebased onto current main (2a5eca11c) as requested: one commit, no merge commit, the branch was force-updated with a lease. Tests on this base (Windows, MinGW, no GPU tests): guest_memory_pool_stats and guest_memory pass, check_conventions passes.

AI-assisted (Claude Code).

[github-actions]

Other open pull requests touch the same code. Merging one will break the other, or both implement the same thing. If this one builds on them, list them in Depends on.

Pull request	Conflicting files (lines on main)	Same exports	Same new files
#4374	docs/dev/debt/libkernel.md L160
#4376	docs/dev/debt/libkernel.md L160
#4379	docs/dev/debt/libkernel.md L160
#4386	docs/dev/debt/libkernel.md L160
#4530	core/libs/tests/GuestMemory.cpp L115
#4651	docs/dev/debt/libkernel.md L160

[adriadam10]

Checked against KytyPS5 KernelGetPageTableStats (constants, EFAULT on null pointers), merged onto current main with a scoped build and ctest (141/141, guest_memory and guest_memory_pool_stats pass), and guest_memory fails without the change. The debt entry records the unmeasured values and the missing used-entry count; merging.