2 ms·
I wonder if you can do some damage with scatter/gather ops within a VM, such that each fetch is a TLB miss inside the VM, and every table walk fetch is a TLB mi
by Retr0id 2mo ago
I wonder if you can do some damage with scatter/gather ops within a VM, such that each fetch is a TLB miss inside the VM, and every table walk fetch is a TLB miss outside of the VM (which gets you up to 24 "fetches per fetch").
- amluto 2mo agoI believe that many (all?) x86 CPUs will cheerfully load page tables from MMIO space. And at least some of the paging formats let you set the UC memory type for page tables. (And don’t forget MTRRs.)