[PING][PATCH v3] x86: Use `get_random_u8' for kernel stack offset randomization

[Maciej W. Rozycki]

On Mon, 30 Jan 2023, Maciej W. Rozycki wrote:

> For x86 kernel stack offset randomization uses the RDTSC instruction, 
> which according to H. Peter Anvin is not a secure source of entropy:
> 
> "RDTSC isn't a super fast instruction either, but what is *way* more
> significant is that this use of RDTSC is NOT safe: in certain power states
> it may very well be that stone number of lower bits of TSC contain no
> entropy at all."

 Ping for:
<https://lore.kernel.org/all/alpine.DEB.2.21.2301302011150.55843@xxxxxxxxxxxxxxxxx/>.

  Maciej