From: Matthew Wilcox <willy@infradead.org>
To: Wei Wang <wei.w.wang@intel.com>
Cc: virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org,
qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org,
kvm@vger.kernel.org, linux-mm@kvack.org, mst@redhat.com,
david@redhat.com, dave.hansen@intel.com,
cornelia.huck@de.ibm.com, akpm@linux-foundation.org,
mgorman@techsingularity.net, aarcange@redhat.com,
amit.shah@redhat.com, pbonzini@redhat.com,
liliang.opensource@gmail.com
Subject: Re: [Qemu-devel] [PATCH v9 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
Date: Thu, 13 Apr 2017 13:44:11 -0700 [thread overview]
Message-ID: <20170413204411.GJ784@bombadil.infradead.org> (raw)
In-Reply-To: <1492076108-117229-1-git-send-email-wei.w.wang@intel.com>
On Thu, Apr 13, 2017 at 05:35:03PM +0800, Wei Wang wrote:
> 2) transfer the guest unused pages to the host so that they
> can be skipped to migrate in live migration.
I don't understand this second bit. You leave the pages on the free list,
and tell the host they're free. What's preventing somebody else from
allocating them and using them for something? Is the guest semi-frozen
at this point with just enough of it running to ask the balloon driver
to do things?
next prev parent reply other threads:[~2017-04-13 20:44 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-13 9:35 [Qemu-devel] [PATCH v9 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration Wei Wang
2017-04-13 9:35 ` [Qemu-devel] [PATCH v9 1/5] virtio-balloon: deflate via a page list Wei Wang
2017-04-13 9:35 ` [Qemu-devel] [PATCH v9 2/5] virtio-balloon: VIRTIO_BALLOON_F_BALLOON_CHUNKS Wei Wang
2017-04-13 16:34 ` Michael S. Tsirkin
2017-04-13 17:03 ` Matthew Wilcox
2017-04-14 8:37 ` [Qemu-devel] [virtio-dev] " Wei Wang
2017-04-14 21:38 ` Michael S. Tsirkin
2017-04-17 3:35 ` Wei Wang
2017-04-26 11:03 ` Wang, Wei W
2017-04-26 23:20 ` Michael S. Tsirkin
2017-04-27 6:31 ` Wei Wang
2017-05-05 22:25 ` Michael S. Tsirkin
2017-05-07 4:19 ` Wang, Wei W
2017-05-08 17:40 ` Michael S. Tsirkin
2017-05-09 2:45 ` Wei Wang
2017-04-13 9:35 ` [Qemu-devel] [PATCH v9 3/5] mm: function to offer a page block on the free list Wei Wang
2017-04-13 20:02 ` Andrew Morton
2017-04-14 2:30 ` Wei Wang
2017-04-14 2:58 ` Matthew Wilcox
2017-04-14 8:58 ` Wei Wang
2017-04-13 9:35 ` [Qemu-devel] [PATCH v9 4/5] mm: export symbol of next_zone and first_online_pgdat Wei Wang
2017-04-13 9:35 ` [Qemu-devel] [PATCH v9 5/5] virtio-balloon: VIRTIO_BALLOON_F_MISC_VQ Wei Wang
2017-04-13 17:08 ` Michael S. Tsirkin
2017-04-27 6:33 ` Wei Wang
2017-05-05 22:21 ` Michael S. Tsirkin
2017-05-07 4:20 ` Wang, Wei W
2017-04-13 20:44 ` Matthew Wilcox [this message]
2017-04-14 1:50 ` [Qemu-devel] [PATCH v9 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration Michael S. Tsirkin
2017-04-14 2:28 ` Wei Wang
2017-04-14 2:57 ` Michael S. Tsirkin
2017-04-14 9:47 ` Matthew Wilcox
2017-04-14 14:22 ` Michael S. Tsirkin
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