CC: [email protected] CC: [email protected] TO: Xie Yongji <[email protected]> CC: "Michael S. Tsirkin" <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 2b14864acbaaf03d9c01982e243a84632524c3ac commit: c8a6153b6c59d95c0e091f053f6f180952ade91e vduse: Introduce VDUSE - vDPA Device in Userspace date: 3 months ago :::::: branch date: 23 hours ago :::::: commit date: 3 months ago config: i386-randconfig-m021-20211216 (https://download.01.org/0day-ci/archive/20211217/[email protected]/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: drivers/vdpa/vdpa_user/iova_domain.c:305 vduse_domain_alloc_iova() warn: should 'iova_pfn << shift' be a 64 bit type? vim +305 drivers/vdpa/vdpa_user/iova_domain.c 8c773d53fb7b642 Xie Yongji 2021-08-31 286 8c773d53fb7b642 Xie Yongji 2021-08-31 287 static dma_addr_t 8c773d53fb7b642 Xie Yongji 2021-08-31 288 vduse_domain_alloc_iova(struct iova_domain *iovad, 8c773d53fb7b642 Xie Yongji 2021-08-31 289 unsigned long size, unsigned long limit) 8c773d53fb7b642 Xie Yongji 2021-08-31 290 { 8c773d53fb7b642 Xie Yongji 2021-08-31 291 unsigned long shift = iova_shift(iovad); 8c773d53fb7b642 Xie Yongji 2021-08-31 292 unsigned long iova_len = iova_align(iovad, size) >> shift; 8c773d53fb7b642 Xie Yongji 2021-08-31 293 unsigned long iova_pfn; 8c773d53fb7b642 Xie Yongji 2021-08-31 294 8c773d53fb7b642 Xie Yongji 2021-08-31 295 /* 8c773d53fb7b642 Xie Yongji 2021-08-31 296 * Freeing non-power-of-two-sized allocations back into the IOVA caches 8c773d53fb7b642 Xie Yongji 2021-08-31 297 * will come back to bite us badly, so we have to waste a bit of space 8c773d53fb7b642 Xie Yongji 2021-08-31 298 * rounding up anything cacheable to make sure that can't happen. The 8c773d53fb7b642 Xie Yongji 2021-08-31 299 * order of the unadjusted size will still match upon freeing. 8c773d53fb7b642 Xie Yongji 2021-08-31 300 */ 8c773d53fb7b642 Xie Yongji 2021-08-31 301 if (iova_len < (1 << (IOVA_RANGE_CACHE_MAX_SIZE - 1))) 8c773d53fb7b642 Xie Yongji 2021-08-31 302 iova_len = roundup_pow_of_two(iova_len); 8c773d53fb7b642 Xie Yongji 2021-08-31 303 iova_pfn = alloc_iova_fast(iovad, iova_len, limit >> shift, true); 8c773d53fb7b642 Xie Yongji 2021-08-31 304 8c773d53fb7b642 Xie Yongji 2021-08-31 @305 return iova_pfn << shift; 8c773d53fb7b642 Xie Yongji 2021-08-31 306 } 8c773d53fb7b642 Xie Yongji 2021-08-31 307 :::::: The code at line 305 was first introduced by commit :::::: 8c773d53fb7b64267b0f55c1d3517cb8c5e29b3c vduse: Implement an MMU-based software IOTLB :::::: TO: Xie Yongji <[email protected]> :::::: CC: Michael S. Tsirkin <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected] _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
