Hardware-assisted guest address space scanning in a virtualized computing system
US10642751B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2017 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45595
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An example method of scanning a guest virtual address (GVA) space generated by a guest operating system executing in a virtual machine of a virtualized computing system includes setting, in a scan of the GVA space by a hypervisor that manages the virtual machine, a current GVA to a first GVA in the GVA space; executing, on a processor allocated to the virtual machine, an address translation instruction, which is in an instruction set of the processor, to perform a first address translation of the current GVA; reading a register of the processor to determine a first error resulting from the first address translation; determining, in response to the first error, a level of a faulting page table in a first page table hierarchy generated by the guest operating system; and setting the current GVA to a second GVA based on the level of the faulting page table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.