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Re: [Qemu-devel] [PATCH v7 kernel 5/5] This patch contains two parts:

From: David Hildenbrand
Subject: Re: [Qemu-devel] [PATCH v7 kernel 5/5] This patch contains two parts:
Date: Mon, 6 Mar 2017 14:23:02 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0

Am 03.03.2017 um 06:40 schrieb Wei Wang:
> From: Liang Li <address@hidden>

I'd prefer to split this into two parts then and to create proper subjects.

If I remember correctly, the general concept was accepted by most reviewers.

> One is to add a new API to mm go get the unused page information.
> The virtio balloon driver will use this new API added to get the
> unused page info and send it to hypervisor(QEMU) to speed up live
> migration. During sending the bitmap, some the pages may be modified
> and are used by the guest, this inaccuracy can be corrected by the
> dirty page logging mechanism.
> One is to add support the request for vm's unused page information,
> QEMU can make use of unused page information and the dirty page
> logging mechanism to skip the transportation of some of these unused
> pages, this is very helpful to reduce the network traffic and speed
> up the live migration process.



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