Re: [PATCH v10 16/26] firmware: qcom_scm: Register Gunyah platform ops

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Hi Elliot,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on 3ebb0ac55efaf1d0fb1b106f852c114e5021f7eb]

url:    https://github.com/intel-lab-lkp/linux/commits/Elliot-Berman/docs-gunyah-Introduce-Gunyah-Hypervisor/20230215-055721
base:   3ebb0ac55efaf1d0fb1b106f852c114e5021f7eb
patch link:    https://lore.kernel.org/r/20230214212457.3319814-1-quic_eberman%40quicinc.com
patch subject: [PATCH v10 16/26] firmware: qcom_scm: Register Gunyah platform ops
config: hexagon-randconfig-r041-20230212 (https://download.01.org/0day-ci/archive/20230216/202302161942.xItsHIi1-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
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
        # https://github.com/intel-lab-lkp/linux/commit/33f0c4b130c7b249a1524da8076dd12333aa7cde
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Elliot-Berman/docs-gunyah-Introduce-Gunyah-Hypervisor/20230215-055721
        git checkout 33f0c4b130c7b249a1524da8076dd12333aa7cde
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/firmware/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202302161942.xItsHIi1-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from drivers/firmware/qcom_scm.c:7:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from drivers/firmware/qcom_scm.c:7:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from drivers/firmware/qcom_scm.c:7:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
>> drivers/firmware/qcom_scm.c:1335:7: error: incompatible pointer types passing 'u64 *' (aka 'unsigned long long *') to parameter of type 'unsigned int *' [-Werror,-Wincompatible-pointer-types]
                                                   &src_cpy, new_perms, mem_parcel->n_acl_entries);
                                                   ^~~~~~~~
   drivers/firmware/qcom_scm.c:912:18: note: passing argument to parameter 'srcvm' here
                           unsigned int *srcvm,
                                         ^
   drivers/firmware/qcom_scm.c:1353:7: error: incompatible pointer types passing 'u64 *' (aka 'unsigned long long *') to parameter of type 'unsigned int *' [-Werror,-Wincompatible-pointer-types]
                                                   &src_cpy, new_perms, 1));
                                                   ^~~~~~~~
   include/asm-generic/bug.h:147:18: note: expanded from macro 'WARN_ON_ONCE'
           DO_ONCE_LITE_IF(condition, WARN_ON, 1)
                           ^~~~~~~~~
   include/linux/once_lite.h:28:27: note: expanded from macro 'DO_ONCE_LITE_IF'
                   bool __ret_do_once = !!(condition);                     \
                                           ^~~~~~~~~
   drivers/firmware/qcom_scm.c:912:18: note: passing argument to parameter 'srcvm' here
                           unsigned int *srcvm,
                                         ^
   drivers/firmware/qcom_scm.c:1385:7: error: incompatible pointer types passing 'u64 *' (aka 'unsigned long long *') to parameter of type 'unsigned int *' [-Werror,-Wincompatible-pointer-types]
                                                   &src_cpy, &new_perms, 1);
                                                   ^~~~~~~~
   drivers/firmware/qcom_scm.c:912:18: note: passing argument to parameter 'srcvm' here
                           unsigned int *srcvm,
                                         ^
   6 warnings and 3 errors generated.


vim +1335 drivers/firmware/qcom_scm.c

  1303	
  1304	static int qcom_scm_gh_rm_pre_mem_share(struct gh_rm *rm, struct gh_rm_mem_parcel *mem_parcel)
  1305	{
  1306		struct qcom_scm_vmperm *new_perms;
  1307		u64 src, src_cpy;
  1308		int ret = 0, i, n;
  1309		u16 vmid;
  1310	
  1311		new_perms = kcalloc(mem_parcel->n_acl_entries, sizeof(*new_perms), GFP_KERNEL);
  1312		if (!new_perms)
  1313			return -ENOMEM;
  1314	
  1315		for (n = 0; n < mem_parcel->n_acl_entries; n++) {
  1316			vmid = le16_to_cpu(mem_parcel->acl_entries[n].vmid);
  1317			if (vmid <= QCOM_SCM_MAX_MANAGED_VMID)
  1318				new_perms[n].vmid = vmid;
  1319			else
  1320				new_perms[n].vmid = QCOM_SCM_RM_MANAGED_VMID;
  1321			if (mem_parcel->acl_entries[n].perms & GH_RM_ACL_X)
  1322				new_perms[n].perm |= QCOM_SCM_PERM_EXEC;
  1323			if (mem_parcel->acl_entries[n].perms & GH_RM_ACL_W)
  1324				new_perms[n].perm |= QCOM_SCM_PERM_WRITE;
  1325			if (mem_parcel->acl_entries[n].perms & GH_RM_ACL_R)
  1326				new_perms[n].perm |= QCOM_SCM_PERM_READ;
  1327		}
  1328	
  1329		src = (1ull << QCOM_SCM_VMID_HLOS);
  1330	
  1331		for (i = 0; i < mem_parcel->n_mem_entries; i++) {
  1332			src_cpy = src;
  1333			ret = qcom_scm_assign_mem(le64_to_cpu(mem_parcel->mem_entries[i].ipa_base),
  1334							le64_to_cpu(mem_parcel->mem_entries[i].size),
> 1335							&src_cpy, new_perms, mem_parcel->n_acl_entries);
  1336			if (ret) {
  1337				src = 0;
  1338				for (n = 0; n < mem_parcel->n_acl_entries; n++) {
  1339					vmid = le16_to_cpu(mem_parcel->acl_entries[n].vmid);
  1340					if (vmid <= QCOM_SCM_MAX_MANAGED_VMID)
  1341						src |= (1ull << vmid);
  1342					else
  1343						src |= (1ull << QCOM_SCM_RM_MANAGED_VMID);
  1344				}
  1345	
  1346				new_perms[0].vmid = QCOM_SCM_VMID_HLOS;
  1347	
  1348				for (i--; i >= 0; i--) {
  1349					src_cpy = src;
  1350					WARN_ON_ONCE(qcom_scm_assign_mem(
  1351							le64_to_cpu(mem_parcel->mem_entries[i].ipa_base),
  1352							le64_to_cpu(mem_parcel->mem_entries[i].size),
  1353							&src_cpy, new_perms, 1));
  1354				}
  1355				break;
  1356			}
  1357		}
  1358	
  1359		kfree(new_perms);
  1360		return ret;
  1361	}
  1362	

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



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