Re: [PATCH 5/5] hyperv: Use hvhdk.h instead of hyperv-tlfs.h in Hyper-V code

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Hi Nuno,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/x86/core]
[also build test ERROR on arm64/for-next/core kvm/queue linus/master v6.12-rc1 next-20241004]
[cannot apply to kvm/linux-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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Nuno-Das-Neves/hyperv-Move-hv_connection_id-to-hyperv-tlfs-h/20241004-035418
base:   tip/x86/core
patch link:    https://lore.kernel.org/r/1727985064-18362-6-git-send-email-nunodasneves%40linux.microsoft.com
patch subject: [PATCH 5/5] hyperv: Use hvhdk.h instead of hyperv-tlfs.h in Hyper-V code
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20241005/202410050921.0o9FH5Ai-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project fef3566a25ff0e34fb87339ba5e13eca17cec00f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241005/202410050921.0o9FH5Ai-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410050921.0o9FH5Ai-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from arch/arm64/hyperv/mshyperv.c:13:
   In file included from include/linux/acpi.h:39:
   In file included from include/acpi/acpi_io.h:7:
   In file included from arch/arm64/include/asm/acpi.h:14:
   In file included from include/linux/memblock.h:12:
   In file included from include/linux/mm.h:2228:
   include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     500 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     501 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:507:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     507 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     508 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     514 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:519:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     519 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     520 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:528:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     528 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     529 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/hyperv/mshyperv.c:53:19: error: use of undeclared identifier 'HV_REGISTER_FEATURES'; did you mean 'HV_REGISTER_FEATURES_INFO'?
      53 |         hv_get_vpreg_128(HV_REGISTER_FEATURES, &result);
         |                          ^~~~~~~~~~~~~~~~~~~~
         |                          HV_REGISTER_FEATURES_INFO
   include/hyperv/hvgdk_mini.h:807:2: note: 'HV_REGISTER_FEATURES_INFO' declared here
     807 |         HV_REGISTER_FEATURES_INFO                               = 0x00000201,
         |         ^
>> arch/arm64/hyperv/mshyperv.c:58:19: error: use of undeclared identifier 'HV_REGISTER_ENLIGHTENMENTS'
      58 |         hv_get_vpreg_128(HV_REGISTER_ENLIGHTENMENTS, &result);
         |                          ^
   5 warnings and 2 errors generated.


vim +53 arch/arm64/hyperv/mshyperv.c

410779d8d81fcf Nuno Das Neves 2024-03-07  30  
9bbb888824e38c Michael Kelley 2021-08-04  31  static int __init hyperv_init(void)
9bbb888824e38c Michael Kelley 2021-08-04  32  {
9bbb888824e38c Michael Kelley 2021-08-04  33  	struct hv_get_vp_registers_output	result;
9bbb888824e38c Michael Kelley 2021-08-04  34  	u64	guest_id;
9bbb888824e38c Michael Kelley 2021-08-04  35  	int	ret;
9bbb888824e38c Michael Kelley 2021-08-04  36  
9bbb888824e38c Michael Kelley 2021-08-04  37  	/*
9bbb888824e38c Michael Kelley 2021-08-04  38  	 * Allow for a kernel built with CONFIG_HYPERV to be running in
9bbb888824e38c Michael Kelley 2021-08-04  39  	 * a non-Hyper-V environment, including on DT instead of ACPI.
9bbb888824e38c Michael Kelley 2021-08-04  40  	 * In such cases, do nothing and return success.
9bbb888824e38c Michael Kelley 2021-08-04  41  	 */
9bbb888824e38c Michael Kelley 2021-08-04  42  	if (acpi_disabled)
9bbb888824e38c Michael Kelley 2021-08-04  43  		return 0;
9bbb888824e38c Michael Kelley 2021-08-04  44  
9bbb888824e38c Michael Kelley 2021-08-04  45  	if (strncmp((char *)&acpi_gbl_FADT.hypervisor_id, "MsHyperV", 8))
9bbb888824e38c Michael Kelley 2021-08-04  46  		return 0;
9bbb888824e38c Michael Kelley 2021-08-04  47  
9bbb888824e38c Michael Kelley 2021-08-04  48  	/* Setup the guest ID */
d5ebde1e2b4615 Li kunyu       2022-09-28  49  	guest_id = hv_generate_guest_id(LINUX_VERSION_CODE);
b967df6293510b Nuno Das Neves 2024-03-12  50  	hv_set_vpreg(HV_REGISTER_GUEST_OS_ID, guest_id);
9bbb888824e38c Michael Kelley 2021-08-04  51  
9bbb888824e38c Michael Kelley 2021-08-04  52  	/* Get the features and hints from Hyper-V */
9bbb888824e38c Michael Kelley 2021-08-04 @53  	hv_get_vpreg_128(HV_REGISTER_FEATURES, &result);
9bbb888824e38c Michael Kelley 2021-08-04  54  	ms_hyperv.features = result.as32.a;
9bbb888824e38c Michael Kelley 2021-08-04  55  	ms_hyperv.priv_high = result.as32.b;
9bbb888824e38c Michael Kelley 2021-08-04  56  	ms_hyperv.misc_features = result.as32.c;
9bbb888824e38c Michael Kelley 2021-08-04  57  
9bbb888824e38c Michael Kelley 2021-08-04 @58  	hv_get_vpreg_128(HV_REGISTER_ENLIGHTENMENTS, &result);
9bbb888824e38c Michael Kelley 2021-08-04  59  	ms_hyperv.hints = result.as32.a;
9bbb888824e38c Michael Kelley 2021-08-04  60  
9bbb888824e38c Michael Kelley 2021-08-04  61  	pr_info("Hyper-V: privilege flags low 0x%x, high 0x%x, hints 0x%x, misc 0x%x\n",
9bbb888824e38c Michael Kelley 2021-08-04  62  		ms_hyperv.features, ms_hyperv.priv_high, ms_hyperv.hints,
9bbb888824e38c Michael Kelley 2021-08-04  63  		ms_hyperv.misc_features);
9bbb888824e38c Michael Kelley 2021-08-04  64  
9bbb888824e38c Michael Kelley 2021-08-04  65  	ret = hv_common_init();
9bbb888824e38c Michael Kelley 2021-08-04  66  	if (ret)
9bbb888824e38c Michael Kelley 2021-08-04  67  		return ret;
9bbb888824e38c Michael Kelley 2021-08-04  68  
52ae076c3a9b36 Michael Kelley 2023-05-23  69  	ret = cpuhp_setup_state(CPUHP_AP_HYPERV_ONLINE, "arm64/hyperv_init:online",
9bbb888824e38c Michael Kelley 2021-08-04  70  				hv_common_cpu_init, hv_common_cpu_die);
9bbb888824e38c Michael Kelley 2021-08-04  71  	if (ret < 0) {
9bbb888824e38c Michael Kelley 2021-08-04  72  		hv_common_free();
9bbb888824e38c Michael Kelley 2021-08-04  73  		return ret;
9bbb888824e38c Michael Kelley 2021-08-04  74  	}
9bbb888824e38c Michael Kelley 2021-08-04  75  
f2580a907e5c0e Michael Kelley 2024-03-18  76  	ms_hyperv_late_init();
f2580a907e5c0e Michael Kelley 2024-03-18  77  
9bbb888824e38c Michael Kelley 2021-08-04  78  	hyperv_initialized = true;
9bbb888824e38c Michael Kelley 2021-08-04  79  	return 0;
9bbb888824e38c Michael Kelley 2021-08-04  80  }
9bbb888824e38c Michael Kelley 2021-08-04  81  

-- 
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