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Extend litebox context to include xsave state #485

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Extend litebox context to include xsave state#485
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enhancementNew feature or requestlayer-liteboxFocusing on the main litebox crate itself

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@jstarks
John Starks (jstarks)
opened on Nov 11, 2025

The current litebox context is effectively litebox_common_linux::PtRegs. This does not include xsave state, meaning that FP state could be trashed across an exception or interrupt.

To fix this, move PtRegs into litebox and extend it with xsave support. This should probably be lazily saved/restored in platforms where that's an option.

#482 (comment)

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  1. Jay Bosamiya (Microsoft) (jaybosamiya-ms)
    added
    enhancementNew feature or request
    layer-liteboxFocusing on the main litebox crate itself
    on Nov 11, 2025

  2. jaybosamiya-ms commented on Oct 16, 2026

    @jaybosamiya-ms
    Jay Bosamiya (Microsoft) (jaybosamiya-ms)
    on Oct 16, 2026
    Member

    Completed in #1537

  3. Jay Bosamiya (Microsoft) (jaybosamiya-ms)
    closed this as completedon Oct 16, 2026

  4. jaybosamiya-ms commented on Oct 16, 2026

    @jaybosamiya-ms
    Jay Bosamiya (Microsoft) (jaybosamiya-ms)
    on Oct 16, 2026
    Member

    Weiteng Chen (@CvvT) I have not looked through #1537 in detail, so I've re-opened this to track the lazy save/restore bit; please close if you think that's done too

  5. Jay Bosamiya (Microsoft) (jaybosamiya-ms)
    reopened this on Oct 16, 2026
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