Hi Yi, Thank you for the patch! Yet something to improve: [auto build test ERROR on vfio/next] [also build test ERROR on v5.6-rc6 next-20200320] [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/Liu-Yi-L/vfio-expose-virtual-Shared-Virtual-Addressing-to-VMs/20200322-213259 base: https://github.com/awilliam/linux-vfio.git next config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/vfio/vfio_iommu_type1.c: In function 'vfio_iommu_get_stage1_format': drivers/vfio/vfio_iommu_type1.c:2300:4: error: 'DOMAIN_ATTR_PASID_FORMAT' undeclared (first use in this function) 2300 | DOMAIN_ATTR_PASID_FORMAT, &format)) { | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/vfio/vfio_iommu_type1.c:2300:4: note: each undeclared identifier is reported only once for each function it appears in drivers/vfio/vfio_iommu_type1.c: In function 'vfio_iommu_type1_ioctl': drivers/vfio/vfio_iommu_type1.c:2464:11: error: implicit declaration of function 'iommu_get_uapi_version' [-Werror=implicit-function-declaration] 2464 | return iommu_get_uapi_version(); | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/vfio/vfio_iommu_type1.c:2626:15: error: implicit declaration of function 'iommu_uapi_get_data_size' [-Werror=implicit-function-declaration] 2626 | data_size = iommu_uapi_get_data_size( | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/vfio/vfio_iommu_type1.c:2627:5: error: 'IOMMU_UAPI_BIND_GPASID' undeclared (first use in this function) 2627 | IOMMU_UAPI_BIND_GPASID, version); | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/iommu_uapi_get_data_size +2626 drivers/vfio/vfio_iommu_type1.c 2446 2447 static long vfio_iommu_type1_ioctl(void *iommu_data, 2448 unsigned int cmd, unsigned long arg) 2449 { 2450 struct vfio_iommu *iommu = iommu_data; 2451 unsigned long minsz; 2452 2453 if (cmd == VFIO_CHECK_EXTENSION) { 2454 switch (arg) { 2455 case VFIO_TYPE1_IOMMU: 2456 case VFIO_TYPE1v2_IOMMU: 2457 case VFIO_TYPE1_NESTING_IOMMU: 2458 return 1; 2459 case VFIO_DMA_CC_IOMMU: 2460 if (!iommu) 2461 return 0; 2462 return vfio_domains_have_iommu_cache(iommu); 2463 case VFIO_NESTING_IOMMU_UAPI: 2464 return iommu_get_uapi_version(); 2465 default: 2466 return 0; 2467 } 2468 } else if (cmd == VFIO_IOMMU_GET_INFO) { 2469 struct vfio_iommu_type1_info info; 2470 struct vfio_info_cap caps = { .buf = NULL, .size = 0 }; 2471 unsigned long capsz; 2472 int ret; 2473 2474 minsz = offsetofend(struct vfio_iommu_type1_info, iova_pgsizes); 2475 2476 /* For backward compatibility, cannot require this */ 2477 capsz = offsetofend(struct vfio_iommu_type1_info, cap_offset); 2478 2479 if (copy_from_user(&info, (void __user *)arg, minsz)) 2480 return -EFAULT; 2481 2482 if (info.argsz < minsz) 2483 return -EINVAL; 2484 2485 if (info.argsz >= capsz) { 2486 minsz = capsz; 2487 info.cap_offset = 0; /* output, no-recopy necessary */ 2488 } 2489 2490 info.flags = VFIO_IOMMU_INFO_PGSIZES; 2491 2492 info.iova_pgsizes = vfio_pgsize_bitmap(iommu); 2493 2494 ret = vfio_iommu_iova_build_caps(iommu, &caps); 2495 if (ret) 2496 return ret; 2497 2498 ret = vfio_iommu_info_add_nesting_cap(iommu, &caps); 2499 if (ret) 2500 return ret; 2501 2502 if (caps.size) { 2503 info.flags |= VFIO_IOMMU_INFO_CAPS; 2504 2505 if (info.argsz < sizeof(info) + caps.size) { 2506 info.argsz = sizeof(info) + caps.size; 2507 } else { 2508 vfio_info_cap_shift(&caps, sizeof(info)); 2509 if (copy_to_user((void __user *)arg + 2510 sizeof(info), caps.buf, 2511 caps.size)) { 2512 kfree(caps.buf); 2513 return -EFAULT; 2514 } 2515 info.cap_offset = sizeof(info); 2516 } 2517 2518 kfree(caps.buf); 2519 } 2520 2521 return copy_to_user((void __user *)arg, &info, minsz) ? 2522 -EFAULT : 0; 2523 2524 } else if (cmd == VFIO_IOMMU_MAP_DMA) { 2525 struct vfio_iommu_type1_dma_map map; 2526 uint32_t mask = VFIO_DMA_MAP_FLAG_READ | 2527 VFIO_DMA_MAP_FLAG_WRITE; 2528 2529 minsz = offsetofend(struct vfio_iommu_type1_dma_map, size); 2530 2531 if (copy_from_user(&map, (void __user *)arg, minsz)) 2532 return -EFAULT; 2533 2534 if (map.argsz < minsz || map.flags & ~mask) 2535 return -EINVAL; 2536 2537 return vfio_dma_do_map(iommu, &map); 2538 2539 } else if (cmd == VFIO_IOMMU_UNMAP_DMA) { 2540 struct vfio_iommu_type1_dma_unmap unmap; 2541 long ret; 2542 2543 minsz = offsetofend(struct vfio_iommu_type1_dma_unmap, size); 2544 2545 if (copy_from_user(&unmap, (void __user *)arg, minsz)) 2546 return -EFAULT; 2547 2548 if (unmap.argsz < minsz || unmap.flags) 2549 return -EINVAL; 2550 2551 ret = vfio_dma_do_unmap(iommu, &unmap); 2552 if (ret) 2553 return ret; 2554 2555 return copy_to_user((void __user *)arg, &unmap, minsz) ? 2556 -EFAULT : 0; 2557 2558 } else if (cmd == VFIO_IOMMU_PASID_REQUEST) { 2559 struct vfio_iommu_type1_pasid_request req; 2560 unsigned long offset; 2561 2562 minsz = offsetofend(struct vfio_iommu_type1_pasid_request, 2563 flags); 2564 2565 if (copy_from_user(&req, (void __user *)arg, minsz)) 2566 return -EFAULT; 2567 2568 if (req.argsz < minsz || 2569 !vfio_iommu_type1_pasid_req_valid(req.flags)) 2570 return -EINVAL; 2571 2572 if (copy_from_user((void *)&req + minsz, 2573 (void __user *)arg + minsz, 2574 sizeof(req) - minsz)) 2575 return -EFAULT; 2576 2577 switch (req.flags & VFIO_PASID_REQUEST_MASK) { 2578 case VFIO_IOMMU_PASID_ALLOC: 2579 { 2580 int ret = 0, result; 2581 2582 result = vfio_iommu_type1_pasid_alloc(iommu, 2583 req.alloc_pasid.min, 2584 req.alloc_pasid.max); 2585 if (result > 0) { 2586 offset = offsetof( 2587 struct vfio_iommu_type1_pasid_request, 2588 alloc_pasid.result); 2589 ret = copy_to_user( 2590 (void __user *) (arg + offset), 2591 &result, sizeof(result)); 2592 } else { 2593 pr_debug("%s: PASID alloc failed\n", __func__); 2594 ret = -EFAULT; 2595 } 2596 return ret; 2597 } 2598 case VFIO_IOMMU_PASID_FREE: 2599 return vfio_iommu_type1_pasid_free(iommu, 2600 req.free_pasid); 2601 default: 2602 return -EINVAL; 2603 } 2604 2605 } else if (cmd == VFIO_IOMMU_BIND) { 2606 struct vfio_iommu_type1_bind bind; 2607 u32 version; 2608 int data_size; 2609 void *gbind_data; 2610 int ret; 2611 2612 minsz = offsetofend(struct vfio_iommu_type1_bind, flags); 2613 2614 if (copy_from_user(&bind, (void __user *)arg, minsz)) 2615 return -EFAULT; 2616 2617 if (bind.argsz < minsz) 2618 return -EINVAL; 2619 2620 /* Get the version of struct iommu_gpasid_bind_data */ 2621 if (copy_from_user(&version, 2622 (void __user *) (arg + minsz), 2623 sizeof(version))) 2624 return -EFAULT; 2625 > 2626 data_size = iommu_uapi_get_data_size( > 2627 IOMMU_UAPI_BIND_GPASID, version); 2628 gbind_data = kzalloc(data_size, GFP_KERNEL); 2629 if (!gbind_data) 2630 return -ENOMEM; 2631 2632 if (copy_from_user(gbind_data, 2633 (void __user *) (arg + minsz), data_size)) { 2634 kfree(gbind_data); 2635 return -EFAULT; 2636 } 2637 2638 switch (bind.flags & VFIO_IOMMU_BIND_MASK) { 2639 case VFIO_IOMMU_BIND_GUEST_PGTBL: 2640 ret = vfio_iommu_type1_bind_gpasid(iommu, 2641 gbind_data); 2642 break; 2643 case VFIO_IOMMU_UNBIND_GUEST_PGTBL: 2644 ret = vfio_iommu_type1_unbind_gpasid(iommu, 2645 gbind_data); 2646 break; 2647 default: 2648 ret = -EINVAL; 2649 break; 2650 } 2651 kfree(gbind_data); 2652 return ret; 2653 } 2654 2655 return -ENOTTY; 2656 } 2657 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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.config.gz
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