drivers/iommu/io-pgtable-arm.c:1138 arm_lpae_dump_ops() warn: should '8 << data->pgd_bits' be a 64 bit

drivers/iommu/io-pgtable-arm.c:1138 arm_lpae_dump_ops() warn: should '8 << data->pgd_bits' be a 64 bit

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2712 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Robin Murphy <robin.murphy@arm.com>
CC: Will Deacon <will@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   34d4ddd359dbcdf6c5fb3f85a179243d7a1cb7f8
commit: c79278c185c8848fefc25cf304eecec9c4623a40 iommu/io-pgtable-arm: Simplify PGD size handling
date:   10 months ago
:::::: branch date: 9 hours ago
:::::: commit date: 10 months ago
config: arm-randconfig-m031-20200909 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/iommu/io-pgtable-arm.c:1138 arm_lpae_dump_ops() warn: should '8 << data->pgd_bits' be a 64 bit type?

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c79278c185c8848fefc25cf304eecec9c4623a40
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout c79278c185c8848fefc25cf304eecec9c4623a40
vim +1138 drivers/iommu/io-pgtable-arm.c

fe4b991dcd84e01 Will Deacon  2014-11-17  1130  
fe4b991dcd84e01 Will Deacon  2014-11-17  1131  static void __init arm_lpae_dump_ops(struct io_pgtable_ops *ops)
fe4b991dcd84e01 Will Deacon  2014-11-17  1132  {
fe4b991dcd84e01 Will Deacon  2014-11-17  1133  	struct arm_lpae_io_pgtable *data = io_pgtable_ops_to_data(ops);
fe4b991dcd84e01 Will Deacon  2014-11-17  1134  	struct io_pgtable_cfg *cfg = &data->iop.cfg;
fe4b991dcd84e01 Will Deacon  2014-11-17  1135  
fe4b991dcd84e01 Will Deacon  2014-11-17  1136  	pr_err("cfg: pgsize_bitmap 0x%lx, ias %u-bit\n",
fe4b991dcd84e01 Will Deacon  2014-11-17  1137  		cfg->pgsize_bitmap, cfg->ias);
fe4b991dcd84e01 Will Deacon  2014-11-17 @1138  	pr_err("data: %d levels, 0x%zx pgd_size, %lu pg_shift, %lu bits_per_level, pgd @ %p\n",
c79278c185c8848 Robin Murphy 2019-10-25  1139  		ARM_LPAE_MAX_LEVELS - data->start_level, ARM_LPAE_PGD_SIZE(data),
594ab90fc46c084 Robin Murphy 2019-10-25  1140  		data->pg_shift, data->bits_per_level, data->pgd);
fe4b991dcd84e01 Will Deacon  2014-11-17  1141  }
fe4b991dcd84e01 Will Deacon  2014-11-17  1142  

:::::: The code at line 1138 was first introduced by commit
:::::: fe4b991dcd84e0104cf2e29223a819335ed048a7 iommu: add self-consistency tests to ARM LPAE IO page table allocator

:::::: TO: Will Deacon <will.deacon@arm.com>
:::::: CC: Will Deacon <will.deacon@arm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 25898 bytes --]

drivers/iommu/io-pgtable-arm.c:1138 arm_lpae_dump_ops() warn: should '8 << data->pgd_bits' be a 64 bit

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2397 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Robin Murphy <robin.murphy@arm.com>
CC: Will Deacon <will@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b5fc7a89e58bcc059a3d5e4db79c481fb437de59
commit: c79278c185c8848fefc25cf304eecec9c4623a40 iommu/io-pgtable-arm: Simplify PGD size handling
date:   12 months ago
:::::: branch date: 10 hours ago
:::::: commit date: 12 months ago
config: i386-randconfig-m021-20201014 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/iommu/io-pgtable-arm.c:1138 arm_lpae_dump_ops() warn: should '8 << data->pgd_bits' be a 64 bit type?

vim +1138 drivers/iommu/io-pgtable-arm.c

fe4b991dcd84e0 Will Deacon  2014-11-17  1130  
fe4b991dcd84e0 Will Deacon  2014-11-17  1131  static void __init arm_lpae_dump_ops(struct io_pgtable_ops *ops)
fe4b991dcd84e0 Will Deacon  2014-11-17  1132  {
fe4b991dcd84e0 Will Deacon  2014-11-17  1133  	struct arm_lpae_io_pgtable *data = io_pgtable_ops_to_data(ops);
fe4b991dcd84e0 Will Deacon  2014-11-17  1134  	struct io_pgtable_cfg *cfg = &data->iop.cfg;
fe4b991dcd84e0 Will Deacon  2014-11-17  1135  
fe4b991dcd84e0 Will Deacon  2014-11-17  1136  	pr_err("cfg: pgsize_bitmap 0x%lx, ias %u-bit\n",
fe4b991dcd84e0 Will Deacon  2014-11-17  1137  		cfg->pgsize_bitmap, cfg->ias);
fe4b991dcd84e0 Will Deacon  2014-11-17 @1138  	pr_err("data: %d levels, 0x%zx pgd_size, %lu pg_shift, %lu bits_per_level, pgd @ %p\n",
c79278c185c884 Robin Murphy 2019-10-25  1139  		ARM_LPAE_MAX_LEVELS - data->start_level, ARM_LPAE_PGD_SIZE(data),
594ab90fc46c08 Robin Murphy 2019-10-25  1140  		data->pg_shift, data->bits_per_level, data->pgd);
fe4b991dcd84e0 Will Deacon  2014-11-17  1141  }
fe4b991dcd84e0 Will Deacon  2014-11-17  1142  

:::::: The code at line 1138 was first introduced by commit
:::::: fe4b991dcd84e0104cf2e29223a819335ed048a7 iommu: add self-consistency tests to ARM LPAE IO page table allocator

:::::: TO: Will Deacon <will.deacon@arm.com>
:::::: CC: Will Deacon <will.deacon@arm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 41637 bytes --]