[PATCH 0/2] shrink virtio baloon on OOM in guest

Excessive virtio_balloon inflation can cause invocation of OOM-killer, when Linux is under severe memory pressure. Various mechanisms are responsible for correct virtio_balloon memory management. Nevertheless it is often the case that these control tools does not have enough time to react on fast c

[PATCH 1/2] virtio_balloon: return the amount of freed memory from leak_balloon()

From: Raushaniya Maksudova This value would be useful in the next patch to provide the amount of the freed memory for OOM killer. Accessing to vb->num_pfns outside of vb->balloon_lock is wrong and unsafe. Signed-off-by: Raushaniya Maksudova Signed-off-by: Denis V. Lunev CC: Rusty Russell CC:

[PATCH 2/2] virtio_balloon: free some memory from baloon on OOM

From: Raushaniya Maksudova Excessive virtio_balloon inflation can cause invocation of OOM-killer, when Linux is under severe memory pressure. Various mechanisms are responsible for correct virtio_balloon memory management. Nevertheless it is often the case that these control tools does not have e

Re: BUG_ON in virtio-ring.c

Hi, I'm hitting this bug with both ext4 and btrfs. Here's an example of the backtrace: https://gist.github.com/vzctl/e888a821333979120932 I tried raising this BUG only for direct ring and it solved the problem: - BUG_ON(total_sg > vq->vring.num); + BUG_ON(total_sg > vq->vring.num &

Re: [PATCH RFC 00/11] qemu: towards virtio-1 host support

On Tue, 07 Oct 2014 18:24:22 -0700 Andy Lutomirski wrote: > On 10/07/2014 07:39 AM, Cornelia Huck wrote: > > This patchset aims to get us some way to implement virtio-1 compliant > > and transitional devices in qemu. Branch available at > > > > git://github.com/cohuck/qemu virtio-1 > > > > I've