Re:The mysterious case of the Linux Page Table Isolation pat...
by rocqua on Monday January 01, 2018 @02:48PM
(#16047668)
That's not how rowhammer works.
It's a hardware level thing. Essentially, when you start rapidly flipping a single bit, that starts to 'leak' some current to the adjacent physical bits. This then allows you to flip a single bit. Especially if you can control bits on both sides of your target.
It's like you are using the bits you can control to 'simulate' an actual stray cosmic ray.
It's a hardware level thing. Essentially, when you start rapidly flipping a single bit, that starts to 'leak' some current to the adjacent physical bits. This then allows you to flip a single bit. Especially if you can control bits on both sides of your target.
It's like you are using the bits you can control to 'simulate' an actual stray cosmic ray.