On Thu, 14 May 2020 15:53:52 -0400
Tom Horsley <horsley1953(a)gmail.com> wrote:
On Thu, 14 May 2020 12:33:59 -0700
stan via users wrote:
> These are meant to
> be silos, but this attack would allow someone on one virtual
> machine to capture data of another virtual machine running on the
> same core.
Reminds me of the very early days of KVM virtualization where I
discovered that the debug registers weren't being properly
context switched and you could set a watch on a memory address in a
program running in one VM and get programs in other VMs to be
interrupted as though they hit the watch (they fixed it :-).
Yes, meltdown is much more sophisticated, but the same idea. When I
first read the description, I was astonished that someone had the
ingenuity to come up with it.