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A test case which generates memory pressure while performing guest administration fails with vhost triggering "page allocation failure" and guest not starting up. After some analysis we discovered the allocation order of vhost to be rensponsible for this behaviour. Thus we suggest patch 1/1 which dynamically allocates the required memory. Please see its description for details. Thanks,

A test case which generates memory pressure while performing guest administration fails with vhost triggering "page allocation failure" and guest not starting up. After some analysis we discovered the allocation order of vhost to be rensponsible for this behaviour. Thus we suggest patch 1/1 which dynamically allocates the required memory. Please see its description for details. Thanks,

...ost/net.c | 4 ++-- > drivers/vhost/scsi.c | 4 ++-- > drivers/vhost/test.c | 2 +- > drivers/vhost/vhost.c | 6 +++++- > drivers/vhost/vhost.h | 2 +- > 5 files changed, 11 insertions(+), 7 deletions(-) > > diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c > index be414d2..e3a9a68 100644 > --- a/drivers/vhost/net.c > +++ b/drivers/vhost/net.c > @@ -374,7 +374,7 @@ static void handle_tx(struct vhost_net *net) > break; > > head = vhost_get_vq_desc(&net->dev, vq, vq->iov, > - ARRAY_SIZE(vq->iov), > + UIO_MAXIOV, &...

...t linux.vnet.ibm.com> --- drivers/vhost/net.c | 4 ++-- drivers/vhost/scsi.c | 4 ++-- drivers/vhost/test.c | 2 +- drivers/vhost/vhost.c | 6 +++++- drivers/vhost/vhost.h | 2 +- 5 files changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index be414d2..e3a9a68 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -374,7 +374,7 @@ static void handle_tx(struct vhost_net *net) break; head = vhost_get_vq_desc(&net->dev, vq, vq->iov, - ARRAY_SIZE(vq->iov), + UIO_MAXIOV, &out, &in, NULL, NU...