[webkit-changes] [WebKit/WebKit] 13e8ac: Remove broken unused jumbo page size support from ...

[Keith Miller]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 13e8ac36ac72bd9a351c06d38c153c26cd3a69c4
      https://github.com/WebKit/WebKit/commit/13e8ac36ac72bd9a351c06d38c153c26cd3a69c4
  Author: Keith Miller <keith_miller at apple.com>
  Date:   2025-01-18 (Sat, 18 Jan 2025)

  Changed paths:
    M Source/JavaScriptCore/heap/MarkedBlock.h

  Log Message:
  -----------
  Remove broken unused jumbo page size support from MarkedBlock
https://bugs.webkit.org/show_bug.cgi?id=286208
rdar://problem/143186605

Reviewed by Mark Lam.

Right now we switch to a 32 bit atom number size if we wouldn't be able to hold the
atom number in a 16 bit integer. But this doesn't happen since the system would need a
(2 ** 16) * 16 = 1MB page size. Additionally, even if some system did have a 1MB+ page
size then all our MarkCountBias logic would break anyway. Let's remove this logic for
now.

* Source/JavaScriptCore/heap/MarkedBlock.h:
(JSC::MarkedBlock::noteMarked):

Canonical link: https://commits.webkit.org/289129@main



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