[jdk21u-dev] RFR: 8309627: Incorrect sorting of DirtyCardQueue buffers

[duke]

On Mon, 9 Jun 2025 19:25:37 GMT, Daniel Hu <duke at openjdk.org> wrote:

> Clean backport. Fixes G1 DirtyCardQueue's sort from breaking on large heaps (8TB+ on default card size 512 bytes, 2TB+ for smallest card size 128 bytes). Ran on internal Amazon pipelines and passes jtreg tier1-4 + tck tests on the following platforms: linux x64, aarch64; macos x64, aarch64; windows x64. Also passes GHA.

@cost0much 
Your change (at version 29d2c0c93b07983787460349f71ac14223288094) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/1861#issuecomment-2977212474