On 03/01/2018 10:24 AM, Brian Gerst wrote: > One thing that I am not certain about is whether debug exception can > happen even if the IF flag is cleared. If it can, debug exception should > be handled like NMI as the state of the CR3 can be indeterminate if the > exception happens in the entry/exit code.
It can happen with IF cleared. I ran into it during PTI development more than once. That's why the debug fault code uses paranoid_entry on 64-bit just like the NMI code.
