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x86系统上idt_table是一个gate_desc idt_table[NR_VECTORS]或者gate_desc idt_table[IDT_ENTRIES]结构体数组,对其每项进行合法判定不能直接取idt[x],这样取到的是一个gate_desc结构体,需要进一步解析拿到关联的处理函数地址,这块内容有问题。
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