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Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to bui
From: |
Li, Liang Z |
Subject: |
Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap |
Date: |
Tue, 19 Apr 2016 15:02:09 +0000 |
> On Tue, 2016-04-19 at 22:34 +0800, Liang Li wrote:
> > The free page bitmap will be sent to QEMU through virtio interface and
> > used for live migration optimization.
> > Drop the cache before building the free page bitmap can get more free
> > pages. Whether dropping the cache is decided by user.
> >
>
> How do you prevent the guest from using those recently-freed pages for
> something else, between when you build the bitmap and the live migration
> completes?
Because the dirty page logging is enabled before building the bitmap, there is
no need
to prevent the guest from using the recently-freed pages ...
Liang
- [Qemu-devel] [PATCH kernel 0/2] speed up live migration by skipping free pages, Liang Li, 2016/04/19
- [Qemu-devel] [PATCH kernel 2/2] virtio-balloon: extend balloon driver to support the new feature, Liang Li, 2016/04/19
- [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Liang Li, 2016/04/19
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Rik van Riel, 2016/04/19
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Michael S. Tsirkin, 2016/04/19
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Li, Liang Z, 2016/04/19
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Michael S. Tsirkin, 2016/04/21
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Li, Liang Z, 2016/04/21
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Dr. David Alan Gilbert, 2016/04/22
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Michael S. Tsirkin, 2016/04/22
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Li, Liang Z, 2016/04/24
- Re: [Qemu-devel] [PATCH kernel 1/2] mm: add the related functions to build the free page bitmap, Michael S. Tsirkin, 2016/04/25