RESOLVED FIXED305676
[JSC] Tag StructureAlignedMemoryAllocator backing store with VM_MEMORY_JAVASCRIPT_CORE 
https://bugs.webkit.org/show_bug.cgi?id=305676
Summary [JSC] Tag StructureAlignedMemoryAllocator backing store with VM_MEMORY_JAVASC...
Marcus Plutowski
Reported 2026-01-16 16:32:16 PST
rdar://168019709 Prior to this commit, this tag has been used to identify Gigacage memory in particular. However, the Structure reservation has many of the same properties; both are - large, singular VA regions, - with special placement requirements, - from which 'special' objects are sub-allocated And so from the OS' perspective policies which might apply to one will tend to apply to the other. This is in contrast with the current tag, which is the same as what is used for libpas backing stores, despite not having much in common at all with that use-case.
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Marcus Plutowski
Comment 1 2026-01-16 16:33:20 PST
Pull request: https://github.com/WebKit/WebKit/pull/56746
EWS
Comment 2 2026-01-16 18:00:41 PST
Committed 305752@main (8e14da4a3ca4): <https://commits.webkit.org/305752@main> Reviewed commits have been landed. Closing PR #56746 and removing active labels.
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