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What are the backwards compatibility guarantees for guest binaries? #845

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#1252
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What are the backwards compatibility guarantees for guest binaries?#845
#1252
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area/documentationRelated to documentationlifecycle/blocked-on-authorThe issue requires an action by the author
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@jprendes
jprendes
opened on Sep 1, 2025

If I have a guest binary compiled with an older hyperlight_guest, will it run in a newer hyperlight_host?
In particular, I see there have been a few changes in outb.rs in the last few months.

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  1. github-actions
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    lifecycle/needs-reviewThe issue has not yet been reviewed.
    on Sep 1, 2025

  2. simongdavies commented on Sep 1, 2025

    @simongdavies
    simongdavies
    on Sep 1, 2025
    Member

    I don't think we ever made any promises here, we should maybe think about allowing/enforcing this.

  3. danbugs
    added
    area/documentationRelated to documentation
    lifecycle/blocked-on-authorThe issue requires an action by the author
    and removed
    lifecycle/needs-reviewThe issue has not yet been reviewed.
    on Oct 1, 2025
  4. danbugs
    added this to the Upcoming milestone on Oct 1, 2025
  5. jsturtevant
    closed this as completedin #1252on Mar 11, 2026
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