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* sys/linux/test: add SYZOS tests for nested GPR persistenceAlexander Potapenko2026-02-091-0/+47
Add two new SYZOS test cases to verify the persistence of Guest Physical Registers (GPRs) in nested virtualization scenario. These tests ensure that the hypervisor correctly saves and restores L2 GPRs during nested VM-exits and VM-entries, preventing register state corruption.