On Tue, Mar 28, 2017 at 11:30:52AM -0500, David Young wrote: > What do you mean by "legitimately" use rdtsc? It seems to me that it > is legitimate for a user to use a high-resolution timer to profile some > code that's under development. They may want to avoid running that code > with root privileges under most circumstances.
In fact, one of the open project items is to make it possible to do gettimeofday and friends without a system call at all on x86. As usual, questionable gains in security complete defeat performance again... Joerg
