On Thu, Feb 26, 2015 at 11:50:42AM +1030, Rusty Russell wrote: > Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx> writes: > > Hi all, > > > > with the recent kernel 3.19, I get a kernel warning when I start my > > KVM guest on s390 with virtio balloon enabled: > > The deeper problem is that virtio_ccw_get_config just silently fails on > OOM. Same problem with virtio_ccw_reset. But avoiding kmalloc calls in virtio_ccw_get_config isn't enough I think, it might still sleep. > > Neither get_config nor set_config are expected to fail. > > Cornelia, I think ccw and config_area should be allocated inside vcdev. > You could either use pointers, or simply allocate vcdev with GDP_DMA. > > This would avoid the kmalloc inside these calls. > > Thanks, > Rusty. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
