The kernel can bypass any memory protection, it does not need to fake mseal. Controlling the memory protection is one of the most important functions of any OS

The kernel can bypass any memory protection, it does not need to fake mseal. Controlling the memory protection is one of the most important functions of any OS kernel and one of the few that could not be implemented in any other place. Some CPUs have special hardware means for protecting some memory region against the kernel ("secure enclaves", e.g. Intel SGX), and that is the feature that the supporters of DRM want. "Mseal" is only against attackers who do not control the kernel.