Re: [RFC v3 for QEMU] virtio-balloon: Add option cont-pages to set VIRTIO_BALLOON_VQ_INFLATE_CONT

On 12.05.20 11:41, Hui Zhu wrote: This description needs an overhaul, it's hard to parse. > If the guest kernel has many fragmentation pages, use virtio_balloon > will split THP of QEMU when it calls MADV_DONTNEED madvise to release > the balloon pages. This is very unclear and confusing. You wi

[RFC v3 for QEMU] virtio-balloon: Add option cont-pages to set VIRTIO_BALLOON_VQ_INFLATE_CONT

If the guest kernel has many fragmentation pages, use virtio_balloon will split THP of QEMU when it calls MADV_DONTNEED madvise to release the balloon pages. Set option cont-pages to on will open flags VIRTIO_BALLOON_VQ_INFLATE_CONT and set default continuous pages order to THP order. Then It will