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  1. JDK
  2. JDK-8155100

AArch64: Relax alignment requirement for byte_map_base

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Details

    • Bug
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • None
    • 9
    • hotspot
    • None
    • b120
    • aarch64

    Backports

      Description

        AArch64 expects the card table base to be page aligned, and asserts that. Unfortunately (because asserts are compiled out in release code) if this assumption is ever violated in production code we won't see it. Instead, we will see mysterious segfaults.

        We have seen this fail in OpenJDK 7.

        It makes more sense to allow the base to be unaligned.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8260775 AArch64: Relax alignment requirement for byte_map_base

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            relates to

            Enhancement - null JDK-8257192 Integrate AArch64 JIT port into 8u

            • P3 - Major loss of function.
            • Resolved

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                aph Andrew Haley
                aph Andrew Haley
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                Dates

                  Created:
                  Updated:
                  Resolved: