Incorrect RSP value? about kvm-kernel-example

[david942j]

Thanks for the finding!

You are right. Though it took me minutes to figure out what I was doing 😂.

ITOH I found the paging only needs 3 pages instead of 5, so guess I can modify 0x5000 to 0x3000 (surly I will give it a name instead of hardcode this time). Do you think this is right? It's been a long time so I'm not sure.

[mythilivutukuru]

No, you’ll need 5 pages, not 3. Initially, 3 pages are used. But two more pages are used later on in the kernel code to add mapping’s for high virtual addresses for kernel mappings. So 5 pages are required.

[david942j]

Thanks for the explanation 😂
I will add comment on this.

[mythilivutukuru]

Thanks.

I am teaching a course on virtualization and would like to use your code in one of my programming assignments, to get students to learn and implement systems calls and hypercalls. I’ll of course credit you and this GitHub repo. Please let me know if this is alright. Thanks.

[david942j]

Sure! It's my honor that this project can used in education purpose 😄