Ever since 2007/2008 GPUs and CPUs are converging, and it is inevitable that at a certain moment even some kernel computations are best left to the GPU. Regard

Ever since 2007/2008 GPUs and CPUs are converging, and it is inevitable that at a certain moment even some kernel computations are best left to the GPU. Regarding security, these days, GPUs have memory isolation and protection. This is how the drivers work: they give a process its own memory-mapped command queue, and only permissions to use part of the GPU memory which they've allocated. So although it does increase the attack service to GPU+CPU instead of just CPU, it is not a matter of 'simply stuffing everything into the privileged domain'.