[virtio-dev] [PATCH v6 kernel 5/5] virtio-balloon: tell host vm's unused page info

This patch contains two parts: 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

[virtio-dev] [PATCH v6 kernel 4/5] virtio-balloon: define flags and head for host request vq

Define the flags and head struct for a new host request virtual queue. Guest can get requests from host and then responds to them on this new virtual queue. Host can make use of this virtual queue to request the guest do some operations, e.g. drop page cache, synchronize file system, etc. And the

[virtio-dev] [PATCH v6 kernel 2/5] virtio-balloon: define new feature bit and head struct

Add a new feature which supports sending the page information with range array. The current implementation uses PFNs array, which is not very efficient. Using ranges can improve the performance of inflating/deflating significantly. Signed-off-by: Liang Li Cc: Michael S.

[virtio-dev] [PATCH v6 kernel 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration

This patch set contains two parts of changes to the virtio-balloon. One is the change for speeding up the inflating & deflating process, the main idea of this optimization is to use {pfn|length} to present the page information instead of the PFNs, to reduce the overhead of virtio data