Re: [RFC PATCH v2 2/2] RDMA/rxe: Support RDMA Atomic Write operation

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

Hi Xiao,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on v5.16]
[also build test ERROR on next-20220113]
[cannot apply to rdma/for-next]
[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/Xiao-Yang/RDMA-rxe-Add-RDMA-Atomic-Write-operation/20220113-110548
base:    df0cc57e057f18e44dac8e6c18aba47ab53202f9
config: riscv-randconfig-r035-20220113 (https://download.01.org/0day-ci/archive/20220113/202201132027.agYTyFRu-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d1021978b8e7e35dcc30201ca1731d64b5a602a8)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/0day-ci/linux/commit/4294d58609cfb4c296c7937eafd58e044a4d81c6
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Xiao-Yang/RDMA-rxe-Add-RDMA-Atomic-Write-operation/20220113-110548
        git checkout 4294d58609cfb4c296c7937eafd58e044a4d81c6
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/infiniband/sw/rxe/

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

All errors (new ones prefixed by >>):

>> drivers/infiniband/sw/rxe/rxe_resp.c:606:2: error: call to __compiletime_assert_499 declared with 'error' attribute: Need native word sized stores/loads for atomicity.
           smp_store_release(dst, *src);
           ^
   include/asm-generic/barrier.h:162:2: note: expanded from macro 'smp_store_release'
           compiletime_assert_atomic_type(*p);                             \
           ^
   include/linux/compiler_types.h:338:2: note: expanded from macro 'compiletime_assert_atomic_type'
           compiletime_assert(__native_word(t),                            \
           ^
   include/linux/compiler_types.h:335:2: note: expanded from macro 'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
           ^
   include/linux/compiler_types.h:323:2: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
           ^
   include/linux/compiler_types.h:316:4: note: expanded from macro '__compiletime_assert'
                           prefix ## suffix();                             \
                           ^
   <scratch space>:165:1: note: expanded from here
   __compiletime_assert_499
   ^
   1 error generated.


vim +/error +606 drivers/infiniband/sw/rxe/rxe_resp.c

   593	
   594	static enum resp_states process_atomic_write(struct rxe_qp *qp,
   595						     struct rxe_pkt_info *pkt)
   596	{
   597		struct rxe_mr *mr = qp->resp.mr;
   598	
   599		u64 *src = payload_addr(pkt);
   600	
   601		u64 *dst = iova_to_vaddr(mr, qp->resp.va + qp->resp.offset, sizeof(u64));
   602		if (!dst || (uintptr_t)dst & 7)
   603			return RESPST_ERR_MISALIGNED_ATOMIC;
   604	
   605		/* Do atomic write after all prior operations have completed */
 > 606		smp_store_release(dst, *src);
   607	
   608		/* decrease resp.resid to zero */
   609		qp->resp.resid -= sizeof(u64);
   610	
   611		return RESPST_NONE;
   612	}
   613	

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