Re: [PATCH V2 08/11] vfio: Enable cdev noiommu mode under iommufd

kernel test robot
2026-03-14T08:10:05Z

Hi Jacob,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v7.0-rc3 next-20260311]
[cannot apply to awilliam-vfio/next awilliam-vfio/for-linus]
[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/Jacob-Pan/iommufd-Support-a-HWPT-without-an-iommu-driver-for-noiommu/20260313-182818
base: linus/master
patch link: https://lore.kernel.org/r/20260312155637.376854-9-jacob.pan%40linux.microsoft.com
patch subject: [PATCH V2 08/11] vfio: Enable cdev noiommu mode under iommufd
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20260314/202603141655.DaMKZr7a-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260314/202603141655.DaMKZr7a-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603141655.DaMKZr7a-lkp@intel.com/

All errors (new ones prefixed by >>):

In file included from drivers/iommu/generic_pt/fmt/iommu_template.h:36,
from drivers/iommu/generic_pt/fmt/iommu_mock.c:10:
drivers/iommu/generic_pt/fmt/amdv1.h: In function 'amdv1pt_install_table':
>> drivers/iommu/generic_pt/fmt/amdv1.h:255:16: error: implicit declaration of function 'pt_table_install64'; did you mean 'pt_table_install32'? [-Wimplicit-function-declaration]
255 | return pt_table_install64(pts, entry);
| ^~~~~~~~~~~~~~~~~~
| pt_table_install32

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for IOMMU_PT_AMDV1
Depends on [n]: GENERIC_PT [=y] && IOMMU_PT [=m] && !GENERIC_ATOMIC64 [=y]
Selected by [m]:
- VFIO_NOIOMMU [=y] && VFIO [=m] && VFIO_GROUP [=y] && IOMMU_SUPPORT [=y]

vim +255 drivers/iommu/generic_pt/fmt/amdv1.h

879ced2bab1ba9 Jason Gunthorpe 2025-11-04 236
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 237 static inline bool amdv1pt_install_table(struct pt_state *pts,
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 238 pt_oaddr_t table_pa,
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 239 const struct pt_write_attrs *attrs)
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 240 {
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 241 u64 entry;
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 242
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 243 /*
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 244 * IR and IW are ANDed from the table levels along with the PTE. We
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 245 * always control permissions from the PTE, so always set IR and IW for
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 246 * tables.
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 247 */
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 248 entry = AMDV1PT_FMT_PR |
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 249 FIELD_PREP(AMDV1PT_FMT_NEXT_LEVEL, pts->level) |
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 250 FIELD_PREP(AMDV1PT_FMT_OA,
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 251 log2_div(table_pa, PT_GRANULE_LG2SZ)) |
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 252 AMDV1PT_FMT_IR | AMDV1PT_FMT_IW;
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 253 if (pts_feature(pts, PT_FEAT_AMDV1_ENCRYPT_TABLES))
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 254 entry = __sme_set(entry);
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 @255 return pt_table_install64(pts, entry);
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 256 }
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 257 #define pt_install_table amdv1pt_install_table
879ced2bab1ba9 Jason Gunthorpe 2025-11-04 258

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