Re: [PATCH 4/7] cxl/mem: Wire up Sanitation support

[kernel test robot <lkp@intel.com>]

Hi Davidlohr,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.3-rc7 next-20230420]
[cannot apply to cxl/next cxl/pending]
[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/Davidlohr-Bueso/cxl-pci-Allocate-irq-vectors-earlier-in-pci-probe/20230421-175725
base:   linus/master
patch link:    https://lore.kernel.org/r/20230421092321.12741-5-dave%40stgolabs.net
patch subject: [PATCH 4/7] cxl/mem: Wire up Sanitation support
config: powerpc-buildonly-randconfig-r006-20230421 (https://download.01.org/0day-ci/archive/20230422/202304220358.PInFhQmP-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661)
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 powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/b5227afb40297993eba355a804720c834da3fe2a
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Davidlohr-Bueso/cxl-pci-Allocate-irq-vectors-earlier-in-pci-probe/20230421-175725
        git checkout b5227afb40297993eba355a804720c834da3fe2a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/cxl/core/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304220358.PInFhQmP-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/cxl/core/memdev.c:97:12: error: call to undeclared function 'readq'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           u64 reg = readq(cxlds->regs.mbox + CXLDEV_MBOX_BG_CMD_STATUS_OFFSET);
                     ^
   1 error generated.


vim +/readq +97 drivers/cxl/core/memdev.c

    88	
    89	static struct device_attribute dev_attr_pmem_size =
    90		__ATTR(size, 0444, pmem_size_show, NULL);
    91	
    92	static ssize_t security_sanitize_show(struct device *dev,
    93					      struct device_attribute *attr, char *buf)
    94	{
    95		struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
    96		struct cxl_dev_state *cxlds = cxlmd->cxlds;
  > 97		u64 reg = readq(cxlds->regs.mbox + CXLDEV_MBOX_BG_CMD_STATUS_OFFSET);
    98		u32 pct = FIELD_GET(CXLDEV_MBOX_BG_CMD_COMMAND_PCT_MASK, reg);
    99		u16 cmd = FIELD_GET(CXLDEV_MBOX_BG_CMD_COMMAND_OPCODE_MASK, reg);
   100	
   101		if (cmd == CXL_MBOX_OP_SANITIZE && pct != 100)
   102			return sysfs_emit(buf, "sanitize\n");
   103		else
   104			return sysfs_emit(buf, "disabled\n");
   105	}
   106	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests