Hello,

I am trying to understand the page fault handling and MMU. These are my queries

1) What is the exact difference between the protection flags in vm_area_struct and pte's protection flags of the page.

Does the field "pgprot_t vm_page_prot" in vm_area_struct contain the protection flags of all the pages in that vm_area? If so how to set these for individual pages?

But could not find any answer to this post.

2) Does MMU (x86 arch) check the vm_area prot flags or the page's pte flags to cause the page fault?

Please help !!

Thanks,

Ravali