Hi Jason, I love your patch! Perhaps something to improve: [auto build test WARNING on net/master] url: https://github.com/0day-ci/linux/commits/Jason-Wang/Fix-various-issue-of-vhost/20181210-223236 config: x86_64-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): include/linux/slab.h:332:43: warning: dubious: x & !y include/linux/slab.h:332:43: warning: dubious: x & !y include/linux/slab.h:332:43: warning: dubious: x & !y drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> include/linux/slab.h:332:43: warning: dubious: x & !y drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> >> drivers/vhost/vhost.c:1771:35: warning: cast removes address space '<asn:1>' of expression drivers/vhost/vhost.c:1776:42: warning: cast removes address space '<asn:1>' of expression drivers/vhost/vhost.c:1788:48: warning: cast removes address space '<asn:1>' of expression drivers/vhost/vhost.c:1819:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1819:13: expected void *addr drivers/vhost/vhost.c:1819:13: got restricted __virtio16 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:1837:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1837:13: expected void *addr drivers/vhost/vhost.c:1837:13: got restricted __virtio16 [noderef] [usertype] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:1874:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:1874:13: expected void *addr drivers/vhost/vhost.c:1874:13: got restricted __virtio16 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2073:21: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2073:21: expected void *addr drivers/vhost/vhost.c:2073:21: got restricted __virtio16 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2100:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2100:13: expected void *addr drivers/vhost/vhost.c:2100:13: got restricted __virtio16 [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2231:21: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2231:21: expected void *addr drivers/vhost/vhost.c:2231:21: got restricted __virtio32 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2235:21: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2235:21: expected void *addr drivers/vhost/vhost.c:2235:21: got restricted __virtio32 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2281:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2281:13: expected void *addr drivers/vhost/vhost.c:2281:13: got restricted __virtio16 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2315:21: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2315:21: expected void *addr drivers/vhost/vhost.c:2315:21: got restricted __virtio16 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2329:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2329:13: expected void *addr drivers/vhost/vhost.c:2329:13: got restricted __virtio16 [noderef] [usertype] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr drivers/vhost/vhost.c:851:42: got void *addr drivers/vhost/vhost.c:2374:13: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:2374:13: expected void *addr drivers/vhost/vhost.c:2374:13: got restricted __virtio16 [noderef] <asn:1> *<noident> drivers/vhost/vhost.c:704:17: warning: incorrect type in return expression (different address spaces) drivers/vhost/vhost.c:704:17: expected void [noderef] <asn:1> * drivers/vhost/vhost.c:704:17: got void *<noident> drivers/vhost/vhost.c:851:42: warning: incorrect type in argument 2 (different address spaces) drivers/vhost/vhost.c:851:42: expected void [noderef] <asn:1> *addr vim +1771 drivers/vhost/vhost.c 1760 1761 static void log_used(struct vhost_virtqueue *vq, u64 used_offset, u64 len) 1762 { 1763 struct iovec iov[64]; 1764 int i, ret; 1765 1766 if (!vq->iotlb) { 1767 log_write(vq->log_base, vq->log_addr + used_offset, len); 1768 return; 1769 } 1770 > 1771 ret = translate_desc(vq, (u64)vq->used + used_offset, len, iov, 64, 1772 VHOST_ACCESS_WO); 1773 WARN_ON(ret < 0); 1774 1775 for (i = 0; i < ret; i++) { 1776 ret = log_write_hva(vq, (u64)iov[i].iov_base, iov[i].iov_len); 1777 WARN_ON(ret); 1778 } 1779 } 1780 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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