Tag
nested-paging
- Feb 12, 2026 The Anatomy of a Virtual Instance: vCPU Threads, Guest Memory, and Device Models What an instance is composed of beneath the API: a set of host threads, a second-level page table, and a set of emulated or shared devices. cloud infrastructure
- Feb 1, 2026 Nested Paging: Two-Dimensional Translation for Virtual Machines How a guest physical address becomes a host physical address, why the walk cost multiplies, and which workloads suffer most from the second level of tables. memory systems
- May 6, 2025 Second-Level Address Translation: Composing Two Page Walks in Hardware How EPT and nested paging remove the shadow-table trap per guest page-table write, what the extra walk costs in memory references, and why accessed and dirty bits become a virtualization problem. virtualization
- Jan 3, 2025 Nested Paging: The Two-Dimensional Walk and the Cost of a Single Guest Access How EPT and NPT turn every guest memory access into two page walks, what an EPT violation reports, and why the hardware page-walk cache decides whether nested paging is cheap or ruinous. virtualization
- Sep 25, 2024 Hardware Dirty-Bit Tracking for Guest Memory How second-level page tables record which guest pages changed, why the first pass needs write protection, and what the bitmap costs in exits when the CPU cannot set the bit itself. virtualization
- Dec 15, 2023 Shadow Page Tables: Keeping Two Guest Mappings Consistent With One Hardware Walk Why a hypervisor must build its own page tables from the guest's, which guest writes force a rebuild, and how the reverse-map and write-protection machinery bounds the cost of keeping them honest. virtualization
- Dec 8, 2022 TLB Tagging and Nested Invalidation: Keeping Translations Alive Across a VM Boundary Why guest translations must survive an exit, how address-space identifiers make that possible, and why invalidating the second level is coarser and more expensive than the first. virtualization