Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.
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01:35, 28 февраля 2026Россия
def run(self) - None:
Defense in depth on top of gVisorgVisor gives you the user-space kernel boundary. What it does not give you automatically is multi-job isolation within a single gVisor sandbox. If you are running multiple untrusted executions inside one runsc container, you still need to layer additional controls. Here is one pattern for doing that: