Hi Willem, [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Willem-de-Bruijn/vhost_net-do-not-stall-on-zerocopy-depletion/20171001-054709 config: x86_64-randconfig-x002-201740 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): In file included from include/linux/list.h:8:0, from include/linux/wait.h:6, from include/linux/eventfd.h:12, from drivers/vhost/net.c:10: drivers/vhost/net.c: In function 'vhost_exceeds_maxpend': include/linux/kernel.h:772:16: warning: comparison of distinct pointer types lacks a cast (void) (&min1 == &min2); \ ^ include/linux/kernel.h:775:2: note: in expansion of macro '__min' __min(typeof(x), typeof(y), \ ^~~~~ >> drivers/vhost/net.c:440:9: note: in expansion of macro 'min' min(VHOST_MAX_PEND, vq->num >> 2); ^~~ vim +/min +440 drivers/vhost/net.c 433 434 static bool vhost_exceeds_maxpend(struct vhost_net *net) 435 { 436 struct vhost_net_virtqueue *nvq = &net->vqs[VHOST_NET_VQ_TX]; 437 struct vhost_virtqueue *vq = &nvq->vq; 438 439 return (nvq->upend_idx + UIO_MAXIOV - nvq->done_idx) % UIO_MAXIOV > > 440 min(VHOST_MAX_PEND, vq->num >> 2); 441 } 442 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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