Fix: xstate load and restore now checks cpuid to avoid #GP or #UD on older CPUs
#15
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Pull Request Overview
This PR enhances the handling of extended processor state management in the VM by checking CPU support using CPUID before reading or writing XSAVE/XSAVES registers, thereby avoiding potential #GP or #UD exceptions on older CPUs. Key changes include:
- Adding boolean fields to track XSAVE and XSAVES support.
- Introducing helper functions (xsave_available, xsaves_available) for CPUID-based feature detection.
- Refactoring host and guest state switching to use the new helper functions.
Thx.🙏 |
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