Gsharp的博客

CPU初始化CPU加电, RESET重重寄存器数据 CS:0xffff IP:0进入实地址模式(0-0xfffff) seg(16bit)+offset(16bit): seg<<4 + offset (0~1MB)执行第一条指令(线性地址 0xffff0 EPROM映射)进入初始引导程序(可用空间0x0C0000-0xfffff)初始引导程序: 从磁盘读入引导扇区的程序. 由于EPROM的空间发展, 后逐渐增加硬件检测, 设备驱动(Linux未采用)等一起组成BIOS.

Livepatch Related WorkFrom KShot1Existing live patching focuses on open-source operating systems, mainly Linux.For example, Ksplice 2, kpatch 3, and kGraft 4 can effectively patch security vulnerabilities without causing a significant downtime.Kpatch

Compile-time stack validationoriginalIn order to get their code upstream, they must first invest considerable effort intofixing a related subsystem. Live patching is exactly a case in point.Live patch’s dilemmaConsistecy Model“Consistecy model” rem