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

Re:Reading privileged memory with a side-channel by lma21 on Thursday January 04, 2018 @04:57PM (#16074447)
What is the analogy behind being able to go into the restricted room?
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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.
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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.
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Re:Reading privileged memory with a side-channel by foota on Thursday January 04, 2018 @05:16PM (#16074598)
You can call into the kernel.

edit: s/call into/trigger a syscall/

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Re:Reading privileged memory with a side-channel by IshKebab on Saturday January 06, 2018 @11:31AM (#16085917)
You don't even need to do that for meltdown.
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