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Message-ID: <202107150013.SrWF8skX-lkp@intel.com>
Date: Thu, 15 Jul 2021 00:27:21 +0800
From: kernel test robot <lkp@...el.com>
To: Michael Kelley <mikelley@...rosoft.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Wei Liu <wei.liu@...nel.org>
Subject: [hyperv-linux:hyperv-next 3/5] arch/x86/kernel/cpu/mshyperv.c:262:
undefined reference to `ms_hyperv'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next
head: 0d9f8d427756841b79df5da8bed98dc113299637
commit: 325d7a85e1ea52c5ca82b246c332e08939b085df [3/5] Drivers: hv: Make portions of Hyper-V init code be arch neutral
config: x86_64-kexec (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?id=325d7a85e1ea52c5ca82b246c332e08939b085df
git remote add hyperv-linux https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
git fetch --no-tags hyperv-linux hyperv-next
git checkout 325d7a85e1ea52c5ca82b246c332e08939b085df
# save the attached .config to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
ld: arch/x86/kernel/cpu/mshyperv.o: in function `ms_hyperv_init_platform':
>> arch/x86/kernel/cpu/mshyperv.c:262: undefined reference to `ms_hyperv'
>> ld: arch/x86/kernel/cpu/mshyperv.c:263: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:264: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:265: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:269: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.o:arch/x86/kernel/cpu/mshyperv.c:269: more undefined references to `ms_hyperv' follow
ld: arch/x86/kernel/cpu/mshyperv.o: in function `ms_hyperv_init_platform':
>> arch/x86/kernel/cpu/mshyperv.c:291: undefined reference to `hv_root_partition'
ld: arch/x86/kernel/cpu/mshyperv.c:310: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:310: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:316: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:317: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.c:320: undefined reference to `ms_hyperv'
ld: arch/x86/kernel/cpu/mshyperv.o:arch/x86/kernel/cpu/mshyperv.c:318: more undefined references to `ms_hyperv' follow
vim +262 arch/x86/kernel/cpu/mshyperv.c
f7c0f50f1857c1 Andrea Parri 2019-10-15 258
a2a47c6c3d1a7c Ky Srinivasan 2010-05-06 259 /*
e08cae4181af94 H. Peter Anvin 2010-05-07 260 * Extract the features and hints
a2a47c6c3d1a7c Ky Srinivasan 2010-05-06 261 */
e08cae4181af94 H. Peter Anvin 2010-05-07 @262 ms_hyperv.features = cpuid_eax(HYPERV_CPUID_FEATURES);
6dc2a774cb4fdb Sunil Muthuswamy 2021-03-23 @263 ms_hyperv.priv_high = cpuid_ebx(HYPERV_CPUID_FEATURES);
cc2dd4027a43bb Denis V. Lunev 2015-08-01 264 ms_hyperv.misc_features = cpuid_edx(HYPERV_CPUID_FEATURES);
e08cae4181af94 H. Peter Anvin 2010-05-07 265 ms_hyperv.hints = cpuid_eax(HYPERV_CPUID_ENLIGHTMENT_INFO);
a2a47c6c3d1a7c Ky Srinivasan 2010-05-06 266
a6c776a952175e Vineeth Pillai 2021-06-03 267 hv_max_functions_eax = cpuid_eax(HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS);
a6c776a952175e Vineeth Pillai 2021-06-03 268
6dc2a774cb4fdb Sunil Muthuswamy 2021-03-23 269 pr_info("Hyper-V: privilege flags low 0x%x, high 0x%x, hints 0x%x, misc 0x%x\n",
6dc2a774cb4fdb Sunil Muthuswamy 2021-03-23 270 ms_hyperv.features, ms_hyperv.priv_high, ms_hyperv.hints,
6dc2a774cb4fdb Sunil Muthuswamy 2021-03-23 271 ms_hyperv.misc_features);
6f4151c89b7d03 K. Y. Srinivasan 2011-09-07 272
415bd1cd3a4289 Vitaly Kuznetsov 2018-03-20 273 ms_hyperv.max_vp_index = cpuid_eax(HYPERV_CPUID_IMPLEMENT_LIMITS);
415bd1cd3a4289 Vitaly Kuznetsov 2018-03-20 274 ms_hyperv.max_lp_index = cpuid_ebx(HYPERV_CPUID_IMPLEMENT_LIMITS);
dd018597a074bc Vitaly Kuznetsov 2017-06-25 275
dd018597a074bc Vitaly Kuznetsov 2017-06-25 276 pr_debug("Hyper-V: max %u virtual processors, %u logical processors\n",
dd018597a074bc Vitaly Kuznetsov 2017-06-25 277 ms_hyperv.max_vp_index, ms_hyperv.max_lp_index);
dd018597a074bc Vitaly Kuznetsov 2017-06-25 278
e997720202b363 Wei Liu 2021-02-03 279 /*
e997720202b363 Wei Liu 2021-02-03 280 * Check CPU management privilege.
e997720202b363 Wei Liu 2021-02-03 281 *
e997720202b363 Wei Liu 2021-02-03 282 * To mirror what Windows does we should extract CPU management
e997720202b363 Wei Liu 2021-02-03 283 * features and use the ReservedIdentityBit to detect if Linux is the
e997720202b363 Wei Liu 2021-02-03 284 * root partition. But that requires negotiating CPU management
e997720202b363 Wei Liu 2021-02-03 285 * interface (a process to be finalized).
e997720202b363 Wei Liu 2021-02-03 286 *
e997720202b363 Wei Liu 2021-02-03 287 * For now, use the privilege flag as the indicator for running as
e997720202b363 Wei Liu 2021-02-03 288 * root.
e997720202b363 Wei Liu 2021-02-03 289 */
e997720202b363 Wei Liu 2021-02-03 290 if (cpuid_ebx(HYPERV_CPUID_FEATURES) & HV_CPU_MANAGEMENT) {
e997720202b363 Wei Liu 2021-02-03 @291 hv_root_partition = true;
e997720202b363 Wei Liu 2021-02-03 292 pr_info("Hyper-V: running as root partition\n");
e997720202b363 Wei Liu 2021-02-03 293 }
e997720202b363 Wei Liu 2021-02-03 294
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 295 /*
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 296 * Extract host information.
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 297 */
a6c776a952175e Vineeth Pillai 2021-06-03 298 if (hv_max_functions_eax >= HYPERV_CPUID_VERSION) {
415bd1cd3a4289 Vitaly Kuznetsov 2018-03-20 299 hv_host_info_eax = cpuid_eax(HYPERV_CPUID_VERSION);
415bd1cd3a4289 Vitaly Kuznetsov 2018-03-20 300 hv_host_info_ebx = cpuid_ebx(HYPERV_CPUID_VERSION);
415bd1cd3a4289 Vitaly Kuznetsov 2018-03-20 301 hv_host_info_ecx = cpuid_ecx(HYPERV_CPUID_VERSION);
415bd1cd3a4289 Vitaly Kuznetsov 2018-03-20 302 hv_host_info_edx = cpuid_edx(HYPERV_CPUID_VERSION);
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 303
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 304 pr_info("Hyper-V Host Build:%d-%d.%d-%d-%d.%d\n",
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 305 hv_host_info_eax, hv_host_info_ebx >> 16,
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 306 hv_host_info_ebx & 0xFFFF, hv_host_info_ecx,
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 307 hv_host_info_edx >> 24, hv_host_info_edx & 0xFFFFFF);
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 308 }
8de8af7e0873c4 K. Y. Srinivasan 2017-01-19 309
e1471463180ddc Joseph Salisbury 2020-09-26 310 if (ms_hyperv.features & HV_ACCESS_FREQUENCY_MSRS &&
71c2a2d0a81f09 Vitaly Kuznetsov 2017-06-22 311 ms_hyperv.misc_features & HV_FEATURE_FREQUENCY_MSRS_AVAILABLE) {
71c2a2d0a81f09 Vitaly Kuznetsov 2017-06-22 312 x86_platform.calibrate_tsc = hv_get_tsc_khz;
71c2a2d0a81f09 Vitaly Kuznetsov 2017-06-22 313 x86_platform.calibrate_cpu = hv_get_tsc_khz;
71c2a2d0a81f09 Vitaly Kuznetsov 2017-06-22 314 }
71c2a2d0a81f09 Vitaly Kuznetsov 2017-06-22 315
6dc2a774cb4fdb Sunil Muthuswamy 2021-03-23 316 if (ms_hyperv.priv_high & HV_ISOLATION) {
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 317) ms_hyperv.isolation_config_a = cpuid_eax(HYPERV_CPUID_ISOLATION_CONFIG);
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 318) ms_hyperv.isolation_config_b = cpuid_ebx(HYPERV_CPUID_ISOLATION_CONFIG);
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 319)
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 320) pr_info("Hyper-V: Isolation Config: Group A 0x%x, Group B 0x%x\n",
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 321) ms_hyperv.isolation_config_a, ms_hyperv.isolation_config_b);
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 322) }
a6c76bb08dc7f7 Andrea Parri (Microsoft 2021-02-01 323)
a6c776a952175e Vineeth Pillai 2021-06-03 324 if (hv_max_functions_eax >= HYPERV_CPUID_NESTED_FEATURES) {
5431390b303962 Vitaly Kuznetsov 2018-03-20 325 ms_hyperv.nested_features =
5431390b303962 Vitaly Kuznetsov 2018-03-20 326 cpuid_eax(HYPERV_CPUID_NESTED_FEATURES);
a6c776a952175e Vineeth Pillai 2021-06-03 327 pr_info("Hyper-V: Nested features: 0x%x\n",
a6c776a952175e Vineeth Pillai 2021-06-03 328 ms_hyperv.nested_features);
5431390b303962 Vitaly Kuznetsov 2018-03-20 329 }
5431390b303962 Vitaly Kuznetsov 2018-03-20 330
a11589563e96bf Tianyu Lan 2020-04-06 331 /*
a11589563e96bf Tianyu Lan 2020-04-06 332 * Hyper-V expects to get crash register data or kmsg when
a11589563e96bf Tianyu Lan 2020-04-06 333 * crash enlightment is available and system crashes. Set
a11589563e96bf Tianyu Lan 2020-04-06 334 * crash_kexec_post_notifiers to be true to make sure that
a11589563e96bf Tianyu Lan 2020-04-06 335 * calling crash enlightment interface before running kdump
a11589563e96bf Tianyu Lan 2020-04-06 336 * kernel.
a11589563e96bf Tianyu Lan 2020-04-06 337 */
a11589563e96bf Tianyu Lan 2020-04-06 338 if (ms_hyperv.misc_features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE)
a11589563e96bf Tianyu Lan 2020-04-06 339 crash_kexec_post_notifiers = true;
a11589563e96bf Tianyu Lan 2020-04-06 340
:::::: The code at line 262 was first introduced by commit
:::::: e08cae4181af9483b04ecfac48f01c8e5a5f27bf x86: Clean up the hypervisor layer
:::::: TO: H. Peter Anvin <hpa@...or.com>
:::::: CC: H. Peter Anvin <hpa@...or.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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