News for hackers. Stuff that matters.

A comment on Reading privileged memory with a side-channel. Parent comment

Re:Reading privileged memory with a side-channel by 314 on Thursday January 04, 2018 @10:04PM (#16076165)
The restricted room is the part of the machine behind the protection. Memory reads are not checked at the tine access. They are checked when the instruction retires.
[ Parent | on HN ]
Re:Reading privileged memory with a side-channel by AlphaSite on Saturday January 06, 2018 @11:44PM (#16089221)
On intel* this isn’t a property intrinsic to superscalar processors, other architectures check it in flight or while it’s in the issue queue, preventing this side channel.
[ Parent | on HN ]