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Re: [Qemu-devel] Persistent Main Memory in QEmu

From: Artyom Tarasenko
Subject: Re: [Qemu-devel] Persistent Main Memory in QEmu
Date: Mon, 18 Apr 2016 22:19:34 +0200

Hi Tianyou,

On Mon, Apr 18, 2016 at 5:50 AM, Li, Tianyou <address@hidden> wrote:
> Currently we are trying to implement below functionalities in QEmu: main
> memory in guest can be logically viewed as persistent and its content can be
> survived through reboot or shutdown/powerup.
> I have looked into the QEmu memory management code include memory.c, exec.c
> and other related source, unfortunately I do not have the chance to get clue
> of how to make QEmu main memory persistent. I found that pmemsave could dump
> physical memory of guest, but I could not find how to restore the dump file
> before VM startup to execution.
> Could anyone provide some hints to me? Thanks in advance!

Is the option "-mem-path=/path/to/mem-file" what you are looking for?

Stefan wrote a nice post about QEMU RAM internals:


Artyom Tarasenko

SPARC and PPC PReP under qemu blog: http://tyom.blogspot.com/search/label/qemu

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