No, only some of the side channel magic doesn't matter if you live in a different virtual memory space. Other past attacks didn't use virtual memory pointers an

No, only some of the side channel magic doesn't matter if you live in a different virtual memory space. Other past attacks didn't use virtual memory pointers and used physical memory pointers or didn't use any pointers at all - one could read data from another process, the kernel, another VM, the SGX enclaves or even proprietary CPU manufacturer code that runs on the CPU, like the CPU signing keys used for remote attestation.