x86: AMD platforms miss the check for CLWB feature flag

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 25
    • Affects Version/s: 17, 21, 25
    • Component/s: hotspot
    • b19

      Noticed this when doing JDK-8353558. We only check for CLWB feature flag for Intel platforms. But AMD APM (Rev. 3.36—March 2024) tells me there is a CLWB flag in CPUID Fn0000_0007_EBX_x0 leaf as well. It is in the same place as the flag for Intel.

            Assignee:
            Aleksey Shipilev
            Reporter:
            Aleksey Shipilev
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              Created:
              Updated:
              Resolved: