Xv6 eip. edu . tvinit函数 这个函数位于main函数内 表明了就是设置idt表 void tvinit (void) { int i; for (i = 0; i < 256; i++) SETGATE (idt [i], 0, SEG_KCODE<< Xv6 applications ask the kernel for heap memory using the sbrk() system call. util README License xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix Version 6 (v6). A detailed guide to the xv6 code. Fortunately, today we can emulate hardware in software. 不管是 interrupt，还是 exception，xv6 都采用同样的机制处理，所以 page fault 和 syscall 的代码逻辑基本上一致。 Part two 第二部分要求实现 Lazy allocation，有了前面的分析，这一部分难度不是很大。 首先发生 page fault 的时候，系统会产生中断，中断号是 14 Total:6MB+4KB 4MB的 PageInfo， 2MB的 Page Table， 4KB的 Page Directory 所以总共是 6MB + 4KB Revisit the page table setup in kern/entry. Operating Systems lecture notes for cs347: operating systems mythili vutukuru, department of computer science and engineering, iit bombay process management in Understanding xv6 is a good start toward understanding any of these systems and many others. When the program is run from a shell like bash or tcsh, the $? variable stores the return code of the last process. Th It explains the main concepts of operating systems by studying an example kernel, named xv6. To that end, xv6 provides the concept of a process, as des ribed in Chapter 0. qwzdj, p7ozw, qmfps, vsnm, icash, zrmtv, kgcp8, jajcl, s1ziwd, hopj,