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

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

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

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

[PATCH net] virtio_net: split out ctrl buffer

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 to get a vmalloc'ed buffer which on some platforms means we can't DMA there.