AArch64: MacOS lazy JIT "write xor execute" switching

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    • Type: Enhancement
    • Resolution: Unresolved
    • Priority: P4
    • tbd
    • Affects Version/s: 26
    • Component/s: hotspot
    • None

      W^X adds a substantial overhead, up to 50ns in some cases, even on a fast CPU. By only changing W^X mode when it is necessary, we can remove 90% of the W^X switches.

            Assignee:
            Unassigned
            Reporter:
            Andrew Haley
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              Created:
              Updated: