Microsoft Technology Licensing, LLC

Osama M Salem

Eric P Traut

Andrew Ernest Nicholas

Idan Avraham

Xiongjian Fu

Aaron Sebastian Giles

Kevin Michael Broas

Andrey Shedel

Mohamed Bouchet

Techniques for adjusting memory in virtual machines are disclosed. According to aspects, memory status is obtained for a guest operating system. Based on the obtained memory status, an amount of guest physical addresses is reported to a memory manager of the guest operating system. Moreover, the amount memory assigned to the guest operating system may be adjusted during the runtime operation of the guest operating system.

Dynamic virtual machine memory management

Various mechanisms are disclosed herein for the saving and restoring of virtual machine environment state. For example, virtual machine state can be either be saved or (multiple) snapshots can be taken of the virtual machine state. In the latter case, virtual processors can be allowed to run while the memory of the virtual machine state is being saved. In either case, virtual devices associated with the virtual machine environment can be quiesced such that these devices can prepare themselves to be saved. Once such virtual devices and memory are saved, they can also be restored. For example, restoration of memory can occur while virtual processors are running at the same time. And, moreover, restoration can occur in batches of pages, thus optimizing the response time for restoring saved data.

Concurrent virtual machine snapshots and restore

Growing community of inventors

Sammamish, WA, United States of America

Osama M Salem