When VM=1, the protected-mode bit goes low and the Entry PLA selects real-mode entry points -- MOV ES, reg takes the one-line path. Meanwhile, CPL is hardwired to 3 whenever VM=1, so the V86 task always runs at the lowest privilege level, under full paging protection. The OS can use paging to virtualize the 8086's 1 MB address space, even simulating A20 address line wraparound by mapping pages to the same physical frames.
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。夫子对此有专业解读
Once the image is generated, we can do pretty much whatever we want with it: use it to generate a .qcow2 image for a VM, couple it with anaconda to do a bare-metal installation, store it in an image registry to deploy on cloud servers, etc.
On the other hand, “some groups are there for frivolity and here, more is more,” he added.
Four years ago, MLS Next Pro implemented a pair of rules geared towards eliminating time-wasting. Now, just months ahead of the 2026 World Cup, MLS’s experimentation is set to be adopted globally. The International Football Association Board (Ifab), the sport’s rule-making body, is set to meet this weekend and is widely expected to adopt both changes.