Hi Eric,
I love your patch! Perhaps something to improve:
[auto build test WARNING on iommu/next]
[also build test WARNING on linus/master v5.10-rc4 next-20201116]
[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]
url:
https://github.com/0day-ci/linux/commits/Eric-Auger/SMMUv3-Nested-Stage-Setup-IOMMU-part/20201116-185039
base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm64-randconfig-r034-20201115 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
c044709b8fbea2a9a375e4173a6bd735f6866c0c)
reproduce (this is a W=1 build):
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
#
https://github.com/0day-ci/linux/commit/95e4ccc61b7a7c06e1e0c6c01f362d590136ad3c
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Eric-Auger/SMMUv3-Nested-Stage-Setup-IOMMU-part/20201116-185039
git checkout 95e4ccc61b7a7c06e1e0c6c01f362d590136ad3c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot
All warnings (new ones prefixed by >>):
>> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:3010:8: warning: logical not is
>> only applied to the left hand side of this bitwise operator
>> [-Wlogical-not-parentheses]
if (!info->flags & IOMMU_INV_PASID_FLAGS_PASID)
^~
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:3010:8: note: add parentheses
after the '!' to evaluate the bitwise operator first
if (!info->flags & IOMMU_INV_PASID_FLAGS_PASID)
^
()
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:3010:8: note: add parentheses
around left hand side expression to silence this warning
if (!info->flags & IOMMU_INV_PASID_FLAGS_PASID)
^
( )
1 warning generated.
vim +3010 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
2960
2961 static int
2962 arm_smmu_cache_invalidate(struct iommu_domain *domain, struct device
*dev,
2963struct iommu_cache_invalidate_info *inv_info)
2964 {
2965 struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
2966 struct arm_smmu_device *smmu = smmu_domain->smmu;
2967
2968 if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED)
2969 return -EINVAL;
2970
2971 if (!smmu)
2972 return -EINVAL;
2973
2974 if (inv_info->version != IOMMU_CACHE_INVALIDATE_INFO_VERSION_1)
2975 return -EINVAL;
2976
2977 if (inv_info->cache & IOMMU_CACHE_INV_TYPE_IOTLB) {
2978 if (inv_info->granularity == IOMMU_INV_GRANU_PASID) {
2979 struct iommu_inv_pasid_info *info =
2980 _info->granu.pasid_info;
2981
2982 if (!(info->flags &
IOMMU_INV_PASID_FLAGS_ARCHID) ||
2983 (info->flags &
IOMMU_INV_PASID_FLAGS_PASID))
2984 return -EINVAL;
2985
2986 __arm_smmu_tlb_inv_context(smmu_domain,
info->archid);
2987
2988 } else if (inv_info->granularity ==
IOMMU_INV_GRANU_ADDR) {
2989 struct iommu_inv_addr_info *info =
_info->granu.addr_info;
2990 size_t size = info->nb_granules *
info->granule_size;
2991 bool leaf = info->flags &
IOMMU_INV_ADDR_FLAGS_LEAF;
2992
2993 if (!(info->flags &
IOMMU_INV_ADDR_FLAGS_ARCHID) ||
2994 (info->flags & IOMMU_INV_ADDR_FLAGS_PASID))
2995 return -EINVAL;
2996
2997 __arm_smmu_tlb_inv_range(info->addr, size,
2998 info->granule_size,
leaf,
2999smmu_domain,
info->archid);
3000
3001 arm_smmu_cmdq_issue_sync(smmu);
3002 } else {
3003 return -EINVAL;
3004 }
3005 } else if (inv_info->cache & IOMMU_CACHE_INV_TYPE_PASID) {
3006 if
