Hi Ashish, kernel test robot noticed the following build warnings: [auto build test WARNING on herbert-cryptodev-2.6/master] [also build test WARNING on herbert-crypto-2.6/master linus/master v6.16-rc7 next-20250724] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Ashish-Kalra/iommu-amd-Add-support-to-remap-unmap-IOMMU-buffers-for-kdump/20250722-055642 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master patch link: https://lore.kernel.org/r/6a48567cd99a0ef915862b3c6590d1415d287870.1753133022.git.ashish.kalra%40amd.com patch subject: [PATCH v4 1/4] iommu/amd: Add support to remap/unmap IOMMU buffers for kdump config: x86_64-randconfig-r133-20250724 (https://download.01.org/0day-ci/archive/20250724/202507241929.76UExdsw-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250724/202507241929.76UExdsw-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202507241929.76UExdsw-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/iommu/amd/init.c:723:41: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ drivers/iommu/amd/init.c:723:41: sparse: expected void * drivers/iommu/amd/init.c:723:41: sparse: got void [noderef] __iomem * >> drivers/iommu/amd/init.c:723:41: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ drivers/iommu/amd/init.c:723:41: sparse: expected void * drivers/iommu/amd/init.c:723:41: sparse: got void [noderef] __iomem * >> drivers/iommu/amd/init.c:723:41: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ drivers/iommu/amd/init.c:723:41: sparse: expected void * drivers/iommu/amd/init.c:723:41: sparse: got void [noderef] __iomem * vim +723 drivers/iommu/amd/init.c 707 708 static inline void *iommu_memremap(unsigned long paddr, size_t size) 709 { 710 phys_addr_t phys; 711 712 if (!paddr) 713 return NULL; 714 715 /* 716 * Obtain true physical address in kdump kernel when SME is enabled. 717 * Currently, previous kernel with SME enabled and kdump kernel 718 * with SME support disabled is not supported. 719 */ 720 phys = __sme_clr(paddr); 721 722 if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT)) > 723 return ioremap_encrypted(phys, size); 724 else 725 return memremap(phys, size, MEMREMAP_WB); 726 } 727 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
