9:03 p.m.
Hi Krzysztof,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 625d3449788f85569096780592549d0340e9c0c7
commit: e93a1695d7fb551376b1c1220a267d032b6ad159 iommu: Enable compile testing for some of
drivers
date: 4 months ago
config: i386-randconfig-r012-20200622 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce (this is a W=1 build):
git checkout e93a1695d7fb551376b1c1220a267d032b6ad159
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
drivers/iommu/mtk_iommu.c: In function 'mtk_iommu_iova_to_phys':
> drivers/iommu/mtk_iommu.c:438:29: warning: comparison is always
false due to limited range of data type [-Wtype-limits]
438 | if
(data->enable_4GB && pa >= MTK_IOMMU_4GB_MODE_REMAP_BASE)
| ^~
vim +438 drivers/iommu/mtk_iommu.c
4d689b61944589 Robin Murphy 2017-09-28 429
0df4fabe208d95 Yong Wu 2016-02-23 430 static phys_addr_t
mtk_iommu_iova_to_phys(struct iommu_domain *domain,
0df4fabe208d95 Yong Wu 2016-02-23 431 dma_addr_t iova)
0df4fabe208d95 Yong Wu 2016-02-23 432 {
0df4fabe208d95 Yong Wu 2016-02-23 433 struct mtk_iommu_domain *dom =
to_mtk_domain(domain);
30e2fccf951238 Yong Wu 2017-08-21 434 struct mtk_iommu_data *data =
mtk_iommu_get_m4u_data();
0df4fabe208d95 Yong Wu 2016-02-23 435 phys_addr_t pa;
0df4fabe208d95 Yong Wu 2016-02-23 436
0df4fabe208d95 Yong Wu 2016-02-23 437 pa =
dom->iop->iova_to_phys(dom->iop, iova);
b4dad40e4f35bb Yong Wu 2019-08-24 @438 if (data->enable_4GB && pa >=
MTK_IOMMU_4GB_MODE_REMAP_BASE)
b4dad40e4f35bb Yong Wu 2019-08-24 439 pa &= ~BIT_ULL(32);
30e2fccf951238 Yong Wu 2017-08-21 440
0df4fabe208d95 Yong Wu 2016-02-23 441 return pa;
0df4fabe208d95 Yong Wu 2016-02-23 442 }
0df4fabe208d95 Yong Wu 2016-02-23 443
:::::: The code at line 438 was first introduced by commit
:::::: b4dad40e4f35bbf2393f35f4492acf799eb8136d iommu/mediatek: Adjust the PA for the 4GB
Mode
:::::: TO: Yong Wu <yong.wu(a)mediatek.com>
:::::: CC: Joerg Roedel <jroedel(a)suse.de>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org