From: kernel test robot <lkp@intel.com>
To: cros-kernel-buildreports@googlegroups.com
Cc: oe-kbuild-all@lists.linux.dev
Subject: [android-common:mirror-chromeos-5.10-arcvm 6/6] drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r1' in asm
Date: Wed, 04 Mar 2026 10:35:59 +0800 [thread overview]
Message-ID: <202603041028.3rnM0Uia-lkp@intel.com> (raw)
Hi David,
FYI, the error/warning still remains.
tree: https://android.googlesource.com/kernel/common mirror-chromeos-5.10-arcvm
head: 8426c769398ef6f4ac3f61df3f3ec10bd11b0e50
commit: adc2b4c6af434db264d6e58e740fca5ae876df86 [6/6] CHROMIUM: BACKPORT: FROMLIST: cpufreq: add kvm-cpufreq driver
config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20260304/202603041028.3rnM0Uia-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 9a109fbb6e184ec9bcce10615949f598f4c974a9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260304/202603041028.3rnM0Uia-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/202603041028.3rnM0Uia-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from <built-in>:2:
In file included from include/linux/compiler_types.h:69:
include/linux/compiler-clang.h:34:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined]
34 | #define __SANITIZE_ADDRESS__
| ^
<built-in>:353:9: note: previous definition is here
353 | #define __SANITIZE_ADDRESS__ 1
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r0' in asm
23 | arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_GET_CUR_CPUFREQ_FUNC_ID,
| ^
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:387:33: note: expanded from macro '__arm_smccc_1_1'
387 | register unsigned long r0 asm("r0"); \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r1' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:388:33: note: expanded from macro '__arm_smccc_1_1'
388 | register unsigned long r1 asm("r1"); \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r2' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:389:33: note: expanded from macro '__arm_smccc_1_1'
389 | register unsigned long r2 asm("r2"); \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r3' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:390:33: note: expanded from macro '__arm_smccc_1_1'
390 | register unsigned long r3 asm("r3"); \
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r0' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:391:3: note: expanded from macro '__arm_smccc_1_1'
391 | __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/arm-smccc.h:372:37: note: expanded from macro '___declare_args'
372 | #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
| ^
<scratch space>:228:1: note: expanded from here
228 | __declare_arg_1
| ^
include/linux/arm-smccc.h:331:34: note: expanded from macro '__declare_arg_1'
331 | register unsigned long arg0 asm("r0") = (u32)a0; \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r1' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:391:3: note: expanded from macro '__arm_smccc_1_1'
391 | __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/arm-smccc.h:372:37: note: expanded from macro '___declare_args'
372 | #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
| ^
<scratch space>:228:1: note: expanded from here
228 | __declare_arg_1
| ^
include/linux/arm-smccc.h:332:31: note: expanded from macro '__declare_arg_1'
332 | register typeof(a1) arg1 asm("r1") = __a1
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: expected string literal in 'asm'
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:48: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r0' in asm
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:32: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:387:33: note: expanded from macro '__arm_smccc_1_1'
387 | register unsigned long r0 asm("r0"); \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r1' in asm
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:32: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:388:33: note: expanded from macro '__arm_smccc_1_1'
388 | register unsigned long r1 asm("r1"); \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r2' in asm
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:32: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:389:33: note: expanded from macro '__arm_smccc_1_1'
389 | register unsigned long r2 asm("r2"); \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r3' in asm
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:32: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:390:33: note: expanded from macro '__arm_smccc_1_1'
390 | register unsigned long r3 asm("r3"); \
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r0' in asm
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:32: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:391:3: note: expanded from macro '__arm_smccc_1_1'
391 | __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/arm-smccc.h:372:37: note: expanded from macro '___declare_args'
372 | #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
| ^
<scratch space>:230:1: note: expanded from here
230 | __declare_arg_1
| ^
include/linux/arm-smccc.h:331:34: note: expanded from macro '__declare_arg_1'
331 | register unsigned long arg0 asm("r0") = (u32)a0; \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r1' in asm
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:32: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:391:3: note: expanded from macro '__arm_smccc_1_1'
391 | __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/arm-smccc.h:372:37: note: expanded from macro '___declare_args'
372 | #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
| ^
<scratch space>:230:1: note: expanded from here
230 | __declare_arg_1
| ^
include/linux/arm-smccc.h:332:31: note: expanded from macro '__declare_arg_1'
332 | register typeof(a1) arg1 asm("r1") = __a1
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: expected string literal in 'asm'
include/linux/arm-smccc.h:466:4: note: expanded from macro 'arm_smccc_1_1_invoke'
466 | arm_smccc_1_1_smc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:413:48: note: expanded from macro 'arm_smccc_1_1_smc'
413 | #define arm_smccc_1_1_smc(...) __arm_smccc_1_1(SMCCC_SMC_INST, __VA_ARGS__)
| ^
drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r0' in asm
include/linux/arm-smccc.h:469:4: note: expanded from macro 'arm_smccc_1_1_invoke'
469 | __fail_smccc_1_1(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:438:3: note: expanded from macro '__fail_smccc_1_1'
438 | __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \
| ^
include/linux/arm-smccc.h:373:37: note: expanded from macro '__declare_args'
373 | #define __declare_args(count, ...) ___declare_args(count, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:372:37: note: expanded from macro '___declare_args'
372 | #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
| ^
<scratch space>:232:1: note: expanded from here
232 | __declare_arg_1
| ^
include/linux/arm-smccc.h:331:34: note: expanded from macro '__declare_arg_1'
331 | register unsigned long arg0 asm("r0") = (u32)a0; \
| ^
>> drivers/cpufreq/kvm-cpufreq.c:23:2: error: unknown register name 'r1' in asm
include/linux/arm-smccc.h:469:4: note: expanded from macro 'arm_smccc_1_1_invoke'
469 | __fail_smccc_1_1(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:438:3: note: expanded from macro '__fail_smccc_1_1'
438 | __declare_args(__count_args(__VA_ARGS__), __VA_ARGS__); \
| ^
include/linux/arm-smccc.h:373:37: note: expanded from macro '__declare_args'
373 | #define __declare_args(count, ...) ___declare_args(count, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:372:37: note: expanded from macro '___declare_args'
372 | #define ___declare_args(count, ...) __declare_arg_ ## count(__VA_ARGS__)
| ^
<scratch space>:232:1: note: expanded from here
232 | __declare_arg_1
| ^
include/linux/arm-smccc.h:332:31: note: expanded from macro '__declare_arg_1'
332 | register typeof(a1) arg1 asm("r1") = __a1
| ^
drivers/cpufreq/kvm-cpufreq.c:50:3: error: unknown register name 'r0' in asm
50 | arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_GET_CPUFREQ_TBL_FUNC_ID,
| ^
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:387:33: note: expanded from macro '__arm_smccc_1_1'
387 | register unsigned long r0 asm("r0"); \
| ^
drivers/cpufreq/kvm-cpufreq.c:50:3: error: unknown register name 'r1' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:388:33: note: expanded from macro '__arm_smccc_1_1'
388 | register unsigned long r1 asm("r1"); \
| ^
drivers/cpufreq/kvm-cpufreq.c:50:3: error: unknown register name 'r2' in asm
include/linux/arm-smccc.h:463:4: note: expanded from macro 'arm_smccc_1_1_invoke'
463 | arm_smccc_1_1_hvc(__VA_ARGS__); \
| ^
include/linux/arm-smccc.h:429:32: note: expanded from macro 'arm_smccc_1_1_hvc'
429 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^
include/linux/arm-smccc.h:389:33: note: expanded from macro '__arm_smccc_1_1'
389 | register unsigned long r2 asm("r2"); \
| ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
1 warning and 20 errors generated.
vim +/r1 +23 drivers/cpufreq/kvm-cpufreq.c
17
18 static void kvm_scale_freq_tick(void)
19 {
20 unsigned long scale, cur_freq, max_freq;
21 struct arm_smccc_res hvc_res;
22
> 23 arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_GET_CUR_CPUFREQ_FUNC_ID,
24 0, &hvc_res);
25
26 cur_freq = hvc_res.a0;
27 max_freq = cpufreq_get_hw_max_freq(task_cpu(current));
28 scale = (cur_freq << SCHED_CAPACITY_SHIFT) / max_freq;
29
30 this_cpu_write(freq_scale, (unsigned long)scale);
31 }
32
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-03-04 2:36 UTC|newest]
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