[intel-tdx:guest 122/136] arch/x86/kernel/acpi/boot.c:1134: undefined reference to `swiotlb_hint_cpus'

[kernel test robot]

tree:   https://github.com/intel/tdx.git guest
head:   12f4800ff5dbe89a642744796008f89f23b2e446
commit: 200e6caad3e4ac89bb2097d4d21425eabac46eea [122/136] swiotlb: Split up single swiotlb lock
config: i386-randconfig-m021-20211027 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel/tdx/commit/200e6caad3e4ac89bb2097d4d21425eabac46eea
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 200e6caad3e4ac89bb2097d4d21425eabac46eea
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   ld: arch/x86/kernel/acpi/boot.o: in function `acpi_parse_madt_lapic_entries':
>> arch/x86/kernel/acpi/boot.c:1134: undefined reference to `swiotlb_hint_cpus'


vim +1134 arch/x86/kernel/acpi/boot.c

  1092	
  1093	static int __init acpi_parse_madt_lapic_entries(void)
  1094	{
  1095		int count;
  1096		int x2count = 0;
  1097		int ret;
  1098		struct acpi_subtable_proc madt_proc[2];
  1099	
  1100		if (!boot_cpu_has(X86_FEATURE_APIC))
  1101			return -ENODEV;
  1102	
  1103		count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
  1104					      acpi_parse_sapic, MAX_LOCAL_APIC);
  1105	
  1106		if (!count) {
  1107			memset(madt_proc, 0, sizeof(madt_proc));
  1108			madt_proc[0].id = ACPI_MADT_TYPE_LOCAL_APIC;
  1109			madt_proc[0].handler = acpi_parse_lapic;
  1110			madt_proc[1].id = ACPI_MADT_TYPE_LOCAL_X2APIC;
  1111			madt_proc[1].handler = acpi_parse_x2apic;
  1112			ret = acpi_table_parse_entries_array(ACPI_SIG_MADT,
  1113					sizeof(struct acpi_table_madt),
  1114					madt_proc, ARRAY_SIZE(madt_proc), MAX_LOCAL_APIC);
  1115			if (ret < 0) {
  1116				pr_err("Error parsing LAPIC/X2APIC entries\n");
  1117				return ret;
  1118			}
  1119	
  1120			count = madt_proc[0].count;
  1121			x2count = madt_proc[1].count;
  1122		}
  1123		if (!count && !x2count) {
  1124			pr_err("No LAPIC entries present\n");
  1125			/* TBD: Cleanup to allow fallback to MPS */
  1126			return -ENODEV;
  1127		} else if (count < 0 || x2count < 0) {
  1128			pr_err("Error parsing LAPIC entry\n");
  1129			/* TBD: Cleanup to allow fallback to MPS */
  1130			return count;
  1131		}
  1132	
  1133		/* This does not take overrides into consideration */
> 1134		swiotlb_hint_cpus(max(count, x2count));
  1135	
  1136		x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
  1137						acpi_parse_x2apic_nmi, 0);
  1138		count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI,
  1139					      acpi_parse_lapic_nmi, 0);
  1140		if (count < 0 || x2count < 0) {
  1141			pr_err("Error parsing LAPIC NMI entry\n");
  1142			/* TBD: Cleanup to allow fallback to MPS */
  1143			return count;
  1144		}
  1145		return 0;
  1146	}
  1147	

---
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Attachment: .config.gz
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