If this allows reading kernel memory, then your VMs could read the host kernel anyway & any security keys contained therein (& that’s assuming pinning cores lim

If this allows reading kernel memory, then your VMs could read the host kernel anyway & any security keys contained therein (& that’s assuming pinning cores limits the exploit to memory being accessed by other CPUs on the same core which generally has not been true of side channel attacks as far as I’m aware).