Hi All: During implementing lab2 for the memory management code In the function i386_vm_init, I have passed the check_boot_pgdir(). But then the bochs report Bochs is exiting with the following message: [CPU0 ] exception(): 3rd (13) exception with no resolution after the lcr0(cr0). Can you give me some suggestions about this issue? How can this happen and what will cause such panic? Thanks Gu, Zhongshu -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ