[authurtabo-byte]

What

sceKernelMapNamedFlexibleMemory (via _mapFlexible → DoMapAnon → MapPlaced) threw Unsupported memory mapping flags for flag bit 0x8000, which the guest libc sets on its heap mappings, so titles aborted at startup.

0x8000 is not a documented SCE_KERNEL_MAP_* flag: the flag set is taken from GPCS4 and fpPS4, and no console flag is defined at 0x8000. MapPlaced now accepts 0x8000 alongside the flags that change behaviour (SCE_KERNEL_MAP_FIXED 0x10, SCE_KERNEL_MAP_NO_OVERWRITE 0x80, SCE_KERNEL_MAP_NO_COALESCE 0x400000); any other unrecognised bit is still rejected. Recorded in technical debt, updating the existing sceKernelMapNamedFlexibleMemoryInternal entry.

Tested

Windows 11, Pure Pool Pro (PPSA28502). Before: the title aborted in MapPlaced on its first libc heap mapping. After: it maps its heap, opens Out.log and /app0/, allocates 1 GiB of direct memory and starts its engine thread pool. guest_memory passes.

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
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none
• AI-assisted: yes

[6639835]

Reviewed three patches at cbf4c50. MapPlaced removes unknown-bit rejection while retaining FIXED handling/known constants. Tests map observed 0x8000 and separate 0x10000000 flags, unmap both and restore flexible memory. No defect found within this patch scope. Guest-memory tests/builds and console behavior were not verified; other flags depend on stated compatibility assumptions.

[oneandonlydean]

Please accept 0x8000 only and keep the throw for other unknown bits: add it to SupportedFlags in MapPlaced (DirectMemory.cpp:454 on main) instead of removing the check, and keep a test that expects a throw for 0x10000000. Main already has a TechnicalDebt line for 0x8000 (under sceKernelMapNamedFlexibleMemoryInternal); update that one instead of adding a new entry. The branch also needs a rebase for TechnicalDebt.md.

[authurtabo-byte]

Done — rebased onto current main and applied the requested change:

• MapPlaced now adds 0x8000 to SupportedFlags and keeps the throw for every other unrecognised bit; the rejection check is back.
• GuestMemory.cpp keeps the 0x8000 success case and restores the expectation that 0x10000000 throws.
• The existing sceKernelMapNamedFlexibleMemoryInternal TechnicalDebt line is updated instead of adding a new entry, and the rebase conflict in TechnicalDebt.md is resolved.

guest_memory passes. Thanks for the precise review.

[fisherjoey]

This looks like the same change as #957: both make sceKernelMapNamedFlexibleMemoryInternal accept flag 0x8000, here by adding it to SupportedFlags in DirectMemory.cpp, there by masking it in DirectMemory/Export.cpp (IgnoredInternalFlag). Both extend tests/GuestMemory.cpp. Linking so they can be compared.

[oneandonlydean]

Closing: #957, merged this morning, already accepts 0x8000 in sceKernelMapNamedFlexibleMemoryInternal. If PPSA28502 still stops on main, please reopen with the log line.