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Date: Fri, 10 May 2024 13:24:49 +0800
From: kernel test robot <lkp@intel.com>
To: Wei Huang <wei.huang2@amd.com>, linux-pci@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	netdev@vger.kernel.org
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	bhelgaas@google.com, corbet@lwn.net, davem@davemloft.net,
	edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
	alex.williamson@redhat.com, gospo@broadcom.com,
	michael.chan@broadcom.com, ajit.khaparde@broadcom.com,
	manoj.panicker2@amd.com, Eric.VanTassell@amd.com,
	wei.huang2@amd.com
Subject: Re: [PATCH V1 6/9] PCI/TPH: Retrieve steering tag from ACPI _DSM
Message-ID: <202405101330.7jDvJ4Jc-lkp@intel.com>
References: <20240509162741.1937586-7-wei.huang2@amd.com>
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In-Reply-To: <20240509162741.1937586-7-wei.huang2@amd.com>

Hi Wei,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/for-linus]
[also build test ERROR on awilliam-vfio/next linus/master awilliam-vfio/for-linus v6.9-rc7 next-20240509]
[cannot apply to pci/next horms-ipvs/master]
[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/Wei-Huang/PCI-Introduce-PCIe-TPH-support-framework/20240510-003504
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git for-linus
patch link:    https://lore.kernel.org/r/20240509162741.1937586-7-wei.huang2%40amd.com
patch subject: [PATCH V1 6/9] PCI/TPH: Retrieve steering tag from ACPI _DSM
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240510/202405101330.7jDvJ4Jc-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project b910bebc300dafb30569cecc3017b446ea8eafa0)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240510/202405101330.7jDvJ4Jc-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405101330.7jDvJ4Jc-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/pci/pcie/tph.c:13:
   In file included from include/linux/acpi.h:14:
   In file included from include/linux/device.h:32:
   In file included from include/linux/device/driver.h:21:
   In file included from include/linux/module.h:19:
   In file included from include/linux/elf.h:6:
   In file included from arch/s390/include/asm/elf.h:173:
   In file included from arch/s390/include/asm/mmu_context.h:11:
   In file included from arch/s390/include/asm/pgalloc.h:18:
   In file included from include/linux/mm.h:2208:
   include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     508 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     509 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     515 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     516 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     527 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     528 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     536 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     537 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/pci/pcie/tph.c:17:
   In file included from include/linux/msi.h:27:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:78:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     547 |         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]
     560 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
      37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
         |                                                           ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
     102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
         |                                                      ^
   In file included from drivers/pci/pcie/tph.c:17:
   In file included from include/linux/msi.h:27:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:78:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     573 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
      35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
         |                                                           ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
     115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
         |                                                      ^
   In file included from drivers/pci/pcie/tph.c:17:
   In file included from include/linux/msi.h:27:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:78:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     584 |         __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]
     594 |         __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]
     604 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     692 |         readsb(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     700 |         readsw(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     708 |         readsl(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     717 |         writesb(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
   include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     726 |         writesw(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
   include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     735 |         writesl(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
>> drivers/pci/pcie/tph.c:221:39: error: use of undeclared identifier 'pci_acpi_dsm_guid'
     221 |         out_obj = acpi_evaluate_dsm(handle, &pci_acpi_dsm_guid, MIN_ST_DSM_REV,
         |                                              ^
   17 warnings and 1 error generated.


vim +/pci_acpi_dsm_guid +221 drivers/pci/pcie/tph.c

   196	
   197	#define MIN_ST_DSM_REV		7
   198	#define ST_DSM_FUNC_INDEX	0xf
   199	static bool invoke_dsm(acpi_handle handle, u32 cpu_uid, u8 ph,
   200			       u8 target_type, bool cache_ref_valid,
   201			       u64 cache_ref, union st_info *st_out)
   202	{
   203		union acpi_object in_obj, in_buf[3], *out_obj;
   204	
   205		in_buf[0].integer.type = ACPI_TYPE_INTEGER;
   206		in_buf[0].integer.value = 0; /* 0 => processor cache steering tags */
   207	
   208		in_buf[1].integer.type = ACPI_TYPE_INTEGER;
   209		in_buf[1].integer.value = cpu_uid;
   210	
   211		in_buf[2].integer.type = ACPI_TYPE_INTEGER;
   212		in_buf[2].integer.value = ph & 3;
   213		in_buf[2].integer.value |= (target_type & 1) << 2;
   214		in_buf[2].integer.value |= (cache_ref_valid & 1) << 3;
   215		in_buf[2].integer.value |= (cache_ref << 32);
   216	
   217		in_obj.type = ACPI_TYPE_PACKAGE;
   218		in_obj.package.count = ARRAY_SIZE(in_buf);
   219		in_obj.package.elements = in_buf;
   220	
 > 221		out_obj = acpi_evaluate_dsm(handle, &pci_acpi_dsm_guid, MIN_ST_DSM_REV,
   222					    ST_DSM_FUNC_INDEX, &in_obj);
   223	
   224		if (!out_obj)
   225			return false;
   226	
   227		if (out_obj->type != ACPI_TYPE_BUFFER) {
   228			pr_err("invalid return type %d from TPH _DSM\n",
   229			       out_obj->type);
   230			ACPI_FREE(out_obj);
   231			return false;
   232		}
   233	
   234		st_out->value = *((u64 *)(out_obj->buffer.pointer));
   235	
   236		ACPI_FREE(out_obj);
   237	
   238		return true;
   239	}
   240	

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https://github.com/intel/lkp-tests/wiki