On Jan 22, 2008 9:46 PM, Gu Zhongshu <gzs715@xxxxxxxxx> wrote:
Hi Mayank:
Thank you for you information.
At last I found it is the problem of forgetting to set permission of
kernel to write the page table that cause this problem. And the cr0_WP
set in cr0 is used to cause this issue.
Ah ok i remember that, i think.
Pay careful attention to the JOS kernel's organization, it matches the actual Linux kernel's implementation in many ways. Even some of the function names are the same, i realize that now as i get to know the Linux kernel more.
And make the Bochs assembly-level debugger your best friend!
Mayank
