Hello, I was trying to understand how page fault is handled with ept enabled on host and I summarize what I understood as following - Suppose page fault happens for guest virtual address(gva) x, if gva->gpa mapping is not present then guest operating system handles page fault and allocates physical page frame(guest physical page frame). Then when guest tries to access memory with that gpa, ept violation occurs and control is transfered to hypervisor. If corresponding entry is not present in ept, hypervisor allocates actual physical page on host and updates ept entry. Is my understanding correct? If it is correct then in function handle_ept_violation() , gpa is obtained as gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); and gfn is obtained as gfn_t gfn = gpa >> PAGE_SHIFT in tdp_page_fault() Then let's assume for the sake of example that for gva x, if gfn inside guest is 10 then will it also be 10 in tdp_page_fault() ? Is there one to one correspondence between gfn obtained in tdp_page_fault and gfn allocated inside guest? Thanks, Siddhesh -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
