Re: [PATCH net] virtio_net: split out ctrl buffer

2018-04-19 Thread kbuild test robot
Hi Michael, I love your patch! Yet something to improve: [auto build test ERROR on net/master] url: https://github.com/0day-ci/linux/commits/Michael-S-Tsirkin/virtio_net-split-out-ctrl-buffer/20180419-145754 config: i386-randconfig-a0-201815 (attached as .config) compiler: gcc-4.9 (Debian 4.

Re: [PATCH net] virtio_net: split out ctrl buffer

2018-04-19 Thread kbuild test robot
Hi Michael, I love your patch! Yet something to improve: [auto build test ERROR on net/master] url: https://github.com/0day-ci/linux/commits/Michael-S-Tsirkin/virtio_net-split-out-ctrl-buffer/20180419-145754 config: x86_64-randconfig-x006-201815 (attached as .config) compiler: gcc-7 (Debian

Re: [PATCH net] virtio_net: split out ctrl buffer

2018-04-18 Thread Michael S. Tsirkin
On Thu, Apr 19, 2018 at 08:01:49AM +0300, Michael S. Tsirkin wrote: > When sending control commands, virtio net sets up several buffers for > DMA. The buffers are all part of the net device which means it's > actually allocated by kvmalloc so in theory (on extreme memory pressure) > it's possible t