Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: ea798e7c558574fe9060ebbfdbb6bb7284423272
https://github.com/WebKit/WebKit/commit/ea798e7c558574fe9060ebbfdbb6bb7284423272
Author: Marcus Plutowski <[email protected]>
Date: 2025-08-13 (Wed, 13 Aug 2025)
Changed paths:
M Source/bmalloc/bmalloc/VMAllocate.h
M Source/bmalloc/bmalloc/bmalloc.cpp
Log Message:
-----------
[bmalloc] Return to manually re-zeroing wasm memory
https://bugs.webkit.org/show_bug.cgi?id=297292
rdar://158164635
Reviewed by Yusuke Suzuki.
Surprisingly, this patch still causes a performance regression on JS3,
albeit smaller than before. Revert for the time being, as this
will require a novel strategy.
* Source/bmalloc/bmalloc/VMAllocate.h: Also turn off MADV_ZERO usage,
revert to using mmap to zero the range.
* Source/bmalloc/bmalloc/bmalloc.cpp:
(bmalloc::api::tryLargeZeroedMemalignVirtual): Return to using
tryMemalign and then zeroing ourselves.
Canonical link: https://commits.webkit.org/298632@main
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