Hi Jason, I love your patch! Yet something to improve: [auto build test ERROR on vhost/linux-next] [also build test ERROR on linux/master linus/master v5.5-rc6 next-20200117] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Jason-Wang/vDPA-support/20200117-170243 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next config: i386-randconfig-d002-20200117 (attached as .config) compiler: gcc-7 (Debian 7.5.0-3) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): ld: drivers/vhost/vhost.o: in function `iotlb_alloc': >> drivers/vhost/vhost.c:582: undefined reference to `vhost_iotlb_alloc' >> ld: drivers/vhost/vhost.c:582: undefined reference to `vhost_iotlb_alloc' ld: drivers/vhost/vhost.o: in function `vhost_init_device_iotlb': >> drivers/vhost/vhost.c:1667: undefined reference to `vhost_iotlb_free' ld: drivers/vhost/vhost.o: in function `iotlb_access_ok': >> drivers/vhost/vhost.c:1271: undefined reference to `vhost_iotlb_itree_first' ld: drivers/vhost/vhost.o: in function `translate_desc': drivers/vhost/vhost.c:1981: undefined reference to `vhost_iotlb_itree_first' ld: drivers/vhost/vhost.o: in function `vhost_dev_cleanup': drivers/vhost/vhost.c:658: undefined reference to `vhost_iotlb_free' >> ld: drivers/vhost/vhost.c:660: undefined reference to `vhost_iotlb_free' ld: drivers/vhost/vhost.o: in function `vhost_process_iotlb_msg': >> drivers/vhost/vhost.c:1070: undefined reference to `vhost_iotlb_del_range' >> ld: drivers/vhost/vhost.c:1056: undefined reference to `vhost_iotlb_add_range' ld: drivers/vhost/vhost.o: in function `iotlb_alloc': >> drivers/vhost/vhost.c:582: undefined reference to `vhost_iotlb_alloc' ld: drivers/vhost/vhost.o: in function `vhost_set_memory': >> drivers/vhost/vhost.c:1380: undefined reference to `vhost_iotlb_add_range' ld: drivers/vhost/vhost.c:1407: undefined reference to `vhost_iotlb_free' ld: drivers/vhost/vhost.c:1403: undefined reference to `vhost_iotlb_free' vim +582 drivers/vhost/vhost.c 579 580 static struct vhost_iotlb *iotlb_alloc(void) 581 { > 582 return vhost_iotlb_alloc(max_iotlb_entries, 583 VHOST_IOTLB_FLAG_RETIRE); 584 } 585 586 struct vhost_iotlb *vhost_dev_reset_owner_prepare(void) 587 { 588 return iotlb_alloc(); 589 } 590 EXPORT_SYMBOL_GPL(vhost_dev_reset_owner_prepare); 591 592 /* Caller should have device mutex */ 593 void vhost_dev_reset_owner(struct vhost_dev *dev, struct vhost_iotlb *umem) 594 { 595 int i; 596 597 vhost_dev_cleanup(dev); 598 599 dev->umem = umem; 600 /* We don't need VQ locks below since vhost_dev_cleanup makes sure 601 * VQs aren't running. 602 */ 603 for (i = 0; i < dev->nvqs; ++i) 604 dev->vqs[i]->umem = umem; 605 } 606 EXPORT_SYMBOL_GPL(vhost_dev_reset_owner); 607 608 void vhost_dev_stop(struct vhost_dev *dev) 609 { 610 int i; 611 612 for (i = 0; i < dev->nvqs; ++i) { 613 if (dev->vqs[i]->kick && dev->vqs[i]->handle_kick) { 614 vhost_poll_stop(&dev->vqs[i]->poll); 615 vhost_poll_flush(&dev->vqs[i]->poll); 616 } 617 } 618 } 619 EXPORT_SYMBOL_GPL(vhost_dev_stop); 620 621 static void vhost_clear_msg(struct vhost_dev *dev) 622 { 623 struct vhost_msg_node *node, *n; 624 625 spin_lock(&dev->iotlb_lock); 626 627 list_for_each_entry_safe(node, n, &dev->read_list, node) { 628 list_del(&node->node); 629 kfree(node); 630 } 631 632 list_for_each_entry_safe(node, n, &dev->pending_list, node) { 633 list_del(&node->node); 634 kfree(node); 635 } 636 637 spin_unlock(&dev->iotlb_lock); 638 } 639 640 void vhost_dev_cleanup(struct vhost_dev *dev) 641 { 642 int i; 643 644 for (i = 0; i < dev->nvqs; ++i) { 645 if (dev->vqs[i]->error_ctx) 646 eventfd_ctx_put(dev->vqs[i]->error_ctx); 647 if (dev->vqs[i]->kick) 648 fput(dev->vqs[i]->kick); 649 if (dev->vqs[i]->call_ctx) 650 eventfd_ctx_put(dev->vqs[i]->call_ctx); 651 vhost_vq_reset(dev, dev->vqs[i]); 652 } 653 vhost_dev_free_iovecs(dev); 654 if (dev->log_ctx) 655 eventfd_ctx_put(dev->log_ctx); 656 dev->log_ctx = NULL; 657 /* No one will access memory at this point */ 658 vhost_iotlb_free(dev->umem); 659 dev->umem = NULL; > 660 vhost_iotlb_free(dev->iotlb); 661 dev->iotlb = NULL; 662 vhost_clear_msg(dev); 663 wake_up_interruptible_poll(&dev->wait, EPOLLIN | EPOLLRDNORM); 664 WARN_ON(!llist_empty(&dev->work_list)); 665 if (dev->worker) { 666 kthread_stop(dev->worker); 667 dev->worker = NULL; 668 dev->kcov_handle = 0; 669 } 670 if (dev->mm) 671 mmput(dev->mm); 672 dev->mm = NULL; 673 } 674 EXPORT_SYMBOL_GPL(vhost_dev_cleanup); 675 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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