[Cryptography] Speculation considered harmful?

[John Gilmore]

> Yes, but in order to check the permissions, you might have to first load something into the TLB cache.  But then this TLB cache leaks information, albeit at a reduced resolution and hence bandwidth.

The TLB cache doesn't leak any information.  The address you are
accessing is not secret; you supplied it.  What is secret (and
protected by the permission bits) is the data that resides at that
address.

	John