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Date: Wed, 2 Mar 2022 00:37:10 +0800
From: kernel test robot <lkp@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Isaku Yamahata <isaku.yamahata@...el.com>
Subject: [intel-tdx:kvm-upstream-workaround 91/284]
arch/x86/kernel/cpu/mshyperv.c:349: undefined reference to `cc_init'
tree: https://github.com/intel/tdx.git kvm-upstream-workaround
head: f6d152644b6c7b3d6786075dcf924402e4d3f66a
commit: cbb5c73599cf1d3d27f675c38e8f078accc4665e [91/284] x86/coco: Add API to handle encryption mask
config: i386-randconfig-a005 (https://download.01.org/0day-ci/archive/20220302/202203020008.SIGKbNCs-lkp@intel.com/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/cbb5c73599cf1d3d27f675c38e8f078accc4665e
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx kvm-upstream-workaround
git checkout cbb5c73599cf1d3d27f675c38e8f078accc4665e
# save the config file 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@...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:349: undefined reference to `cc_init'
vim +349 arch/x86/kernel/cpu/mshyperv.c
267
268 /*
269 * Extract the features and hints
270 */
271 ms_hyperv.features = cpuid_eax(HYPERV_CPUID_FEATURES);
272 ms_hyperv.priv_high = cpuid_ebx(HYPERV_CPUID_FEATURES);
273 ms_hyperv.misc_features = cpuid_edx(HYPERV_CPUID_FEATURES);
274 ms_hyperv.hints = cpuid_eax(HYPERV_CPUID_ENLIGHTMENT_INFO);
275
276 hv_max_functions_eax = cpuid_eax(HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS);
277
278 pr_info("Hyper-V: privilege flags low 0x%x, high 0x%x, hints 0x%x, misc 0x%x\n",
279 ms_hyperv.features, ms_hyperv.priv_high, ms_hyperv.hints,
280 ms_hyperv.misc_features);
281
282 ms_hyperv.max_vp_index = cpuid_eax(HYPERV_CPUID_IMPLEMENT_LIMITS);
283 ms_hyperv.max_lp_index = cpuid_ebx(HYPERV_CPUID_IMPLEMENT_LIMITS);
284
285 pr_debug("Hyper-V: max %u virtual processors, %u logical processors\n",
286 ms_hyperv.max_vp_index, ms_hyperv.max_lp_index);
287
288 /*
289 * Check CPU management privilege.
290 *
291 * To mirror what Windows does we should extract CPU management
292 * features and use the ReservedIdentityBit to detect if Linux is the
293 * root partition. But that requires negotiating CPU management
294 * interface (a process to be finalized).
295 *
296 * For now, use the privilege flag as the indicator for running as
297 * root.
298 */
299 if (cpuid_ebx(HYPERV_CPUID_FEATURES) & HV_CPU_MANAGEMENT) {
300 hv_root_partition = true;
301 pr_info("Hyper-V: running as root partition\n");
302 }
303
304 /*
305 * Extract host information.
306 */
307 if (hv_max_functions_eax >= HYPERV_CPUID_VERSION) {
308 hv_host_info_eax = cpuid_eax(HYPERV_CPUID_VERSION);
309 hv_host_info_ebx = cpuid_ebx(HYPERV_CPUID_VERSION);
310 hv_host_info_ecx = cpuid_ecx(HYPERV_CPUID_VERSION);
311 hv_host_info_edx = cpuid_edx(HYPERV_CPUID_VERSION);
312
313 pr_info("Hyper-V Host Build:%d-%d.%d-%d-%d.%d\n",
314 hv_host_info_eax, hv_host_info_ebx >> 16,
315 hv_host_info_ebx & 0xFFFF, hv_host_info_ecx,
316 hv_host_info_edx >> 24, hv_host_info_edx & 0xFFFFFF);
317 }
318
319 if (ms_hyperv.features & HV_ACCESS_FREQUENCY_MSRS &&
320 ms_hyperv.misc_features & HV_FEATURE_FREQUENCY_MSRS_AVAILABLE) {
321 x86_platform.calibrate_tsc = hv_get_tsc_khz;
322 x86_platform.calibrate_cpu = hv_get_tsc_khz;
323 }
324
325 if (ms_hyperv.priv_high & HV_ISOLATION) {
326 ms_hyperv.isolation_config_a = cpuid_eax(HYPERV_CPUID_ISOLATION_CONFIG);
327 ms_hyperv.isolation_config_b = cpuid_ebx(HYPERV_CPUID_ISOLATION_CONFIG);
328 ms_hyperv.shared_gpa_boundary =
329 BIT_ULL(ms_hyperv.shared_gpa_boundary_bits);
330
331 pr_info("Hyper-V: Isolation Config: Group A 0x%x, Group B 0x%x\n",
332 ms_hyperv.isolation_config_a, ms_hyperv.isolation_config_b);
333
334 if (hv_get_isolation_type() == HV_ISOLATION_TYPE_SNP) {
335 static_branch_enable(&isolation_type_snp);
336 #ifdef CONFIG_SWIOTLB
337 swiotlb_unencrypted_base = ms_hyperv.shared_gpa_boundary;
338 #endif
339 }
340
341 #ifdef CONFIG_SWIOTLB
342 /*
343 * Enable swiotlb force mode in Isolation VM to
344 * use swiotlb bounce buffer for dma transaction.
345 */
346 swiotlb_force = SWIOTLB_FORCE;
347 #endif
348 if (hv_get_isolation_type() != HV_ISOLATION_TYPE_NONE)
> 349 cc_init(CC_VENDOR_HYPERV, 0);
350 }
351
352 if (hv_max_functions_eax >= HYPERV_CPUID_NESTED_FEATURES) {
353 ms_hyperv.nested_features =
354 cpuid_eax(HYPERV_CPUID_NESTED_FEATURES);
355 pr_info("Hyper-V: Nested features: 0x%x\n",
356 ms_hyperv.nested_features);
357 }
358
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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