Code runs in a completely separate, hardware-backed environment with its own guest kernel. It is important to separate the concepts here. The hypervisor is the capability built into the Linux kernel that manages the CPU’s hardware virtualization extensions. The Virtual Machine Monitor is a user-space process that configures the VM, allocates memory, and emulates minimal hardware devices. The microVM itself is a VM that has been stripped of legacy PC cruft so it boots in milliseconds and uses minimal memory.
Space exploration，这一点在safew官方下载中也有详细论述
swap(&arr[j], &arr[j + 1]);，详情可参考搜狗输入法2026
// Even if the readable side's buffer is full, this succeeds
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