Optimizing memory sharing in a virtualized computer system with address space layout randomization (ASLR) enabled in guest operating systems wherein said ASLR is enable during initialization of a virtual machine, in a group, when no other virtual machines are active in said group
US10747563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2014 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Mar 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/657
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and techniques are described for optimizing memory sharing. A described technique includes grouping virtual machines (VMs) into groups including a first group; initializing a first VM in the first group, wherein initializing the first VM includes identifying, for each of one or more first memory pages for the first VM, a respective base address for storing the first memory page using an address randomization technique, and storing, for each of the one or more first memory pages, data associating the first memory page with the respective base address for the first group, and initializing a second VM while the first VM is active, wherein initializing the second VM includes determining that the second VM is a member of the first group, and in response, storing one or more second memory pages for the second VM using the respective base addresses stored for the first group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.