Hi, This series is a respin of automatic ballooning support I started working on last year. Patch 2/2 contains all relevant technical details and performance measurements results. This is in RFC state because it's a work in progress. Here's some information if you want to try automatic ballooning: 1. You'll need 3.9+ for the host kernel 2. Apply this series for the guest kernel 3. Grab the QEMU bits from: git://repo.or.cz/qemu/qmp-unstable.git balloon/auto-ballooning/memcg/rfc 4. Enable the balloon device in qemu with: -device virtio-balloon-pci,auto-balloon=true 5. Balloon the guest memory down, say from 1G to 256MB 6. Generate some pressure in the guest, say a kernel build with -j16 Any feedback is appreciated! Luiz Capitulino (2): virtio_balloon: move balloon_lock mutex to callers virtio_balloon: auto-ballooning support drivers/virtio/virtio_balloon.c | 63 ++++++++++++++++++++++++++++++++++--- include/uapi/linux/virtio_balloon.h | 1 + 2 files changed, 60 insertions(+), 4 deletions(-) -- 1.8.1.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>