search for: gwalks

...above two operations are observed within the race window, it indicates possiblity that previous walk result may be inaccurate and re-check is requried. If mismatch, simply return to trigger another fault. I made some experiment to sample perfc count for kernel compile: <64bit guest> 3.7% of gwalks are re-checked For re-check, 68% comes from write permission removal <32bit pae guest> 7.2% of gwalks are re-checked For re-check, 54.9% comes from write permission removal Actually previous fast emulation optimization already skip lots of guest table walks, and thus above ratio can be small...