* [akpm-mm:mm-nonmm-unstable 35/36] arch/arm64/hyperv/hv_core.c:28:33: warning: variable 'output_address' set but not used
@ 2023-07-18 1:09 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-07-18 1:09 UTC (permalink / raw)
To: Andy Shevchenko
Cc: oe-kbuild-all, Andrew Morton, Linux Memory Management List
tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
head: 643039cbab79355ceb1ce9a91e2a7483a44bec05
commit: fceebffabbb6a664115469aac95d243048b09d22 [35/36] arm64: smccc: replace custom COUNT_ARGS() & CONCATENATE() implementations
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230718/202307180935.HWK2YvKG-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230718/202307180935.HWK2YvKG-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/202307180935.HWK2YvKG-lkp@intel.com/
All warnings (new ones prefixed by >>):
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:419:59: error: 'arg2' undeclared (first use in this function); did you mean 'r2'?
419 | #define __constraint_read_2 __constraint_read_1, "r" (arg2)
| ^~~~
include/linux/arm-smccc.h:420:33: note: in expansion of macro '__constraint_read_2'
420 | #define __constraint_read_3 __constraint_read_2, "r" (arg3)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:421:33: note: in expansion of macro '__constraint_read_3'
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:422:33: note: in expansion of macro '__constraint_read_4'
422 | #define __constraint_read_5 __constraint_read_4, "r" (arg5)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_5'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:33:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
33 | arm_smccc_1_1_hvc(HV_FUNC_ID, control,
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:420:59: error: 'arg3' undeclared (first use in this function); did you mean 'r3'?
420 | #define __constraint_read_3 __constraint_read_2, "r" (arg3)
| ^~~~
include/linux/arm-smccc.h:421:33: note: in expansion of macro '__constraint_read_3'
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:422:33: note: in expansion of macro '__constraint_read_4'
422 | #define __constraint_read_5 __constraint_read_4, "r" (arg5)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_5'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:33:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
33 | arm_smccc_1_1_hvc(HV_FUNC_ID, control,
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:421:59: error: 'arg4' undeclared (first use in this function)
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~
include/linux/arm-smccc.h:422:33: note: in expansion of macro '__constraint_read_4'
422 | #define __constraint_read_5 __constraint_read_4, "r" (arg5)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_5'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:33:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
33 | arm_smccc_1_1_hvc(HV_FUNC_ID, control,
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:422:59: error: 'arg5' undeclared (first use in this function)
422 | #define __constraint_read_5 __constraint_read_4, "r" (arg5)
| ^~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_5'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:33:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
33 | arm_smccc_1_1_hvc(HV_FUNC_ID, control,
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:492:21: error: '___res' undeclared (first use in this function)
492 | if (___res) \
| ^~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:33:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
33 | arm_smccc_1_1_hvc(HV_FUNC_ID, control,
| ^~~~~~~~~~~~~~~~~
>> arch/arm64/hyperv/hv_core.c:28:33: warning: variable 'output_address' set but not used [-Wunused-but-set-variable]
28 | u64 output_address;
| ^~~~~~~~~~~~~~
>> arch/arm64/hyperv/hv_core.c:27:33: warning: variable 'input_address' set but not used [-Wunused-but-set-variable]
27 | u64 input_address;
| ^~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c: In function 'hv_do_fast_hypercall8':
include/linux/arm-smccc.h:485:29: error: '__declare_arg_4' undeclared (first use in this function)
485 | CONCATENATE(__declare_arg_, COUNT_ARGS(__VA_ARGS__)); \
| ^~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in definition of macro '__CONCAT'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/arm-smccc.h:485:17: note: in expansion of macro 'CONCATENATE'
485 | CONCATENATE(__declare_arg_, COUNT_ARGS(__VA_ARGS__)); \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:417:38: error: 'arg0' undeclared (first use in this function); did you mean 'r0'?
417 | #define __constraint_read_0 "r" (arg0)
| ^~~~
include/linux/arm-smccc.h:418:33: note: in expansion of macro '__constraint_read_0'
418 | #define __constraint_read_1 __constraint_read_0, "r" (arg1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:419:33: note: in expansion of macro '__constraint_read_1'
419 | #define __constraint_read_2 __constraint_read_1, "r" (arg2)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:420:33: note: in expansion of macro '__constraint_read_2'
420 | #define __constraint_read_3 __constraint_read_2, "r" (arg3)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:421:33: note: in expansion of macro '__constraint_read_3'
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_4'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:418:59: error: 'arg1' undeclared (first use in this function); did you mean 'r1'?
418 | #define __constraint_read_1 __constraint_read_0, "r" (arg1)
| ^~~~
include/linux/arm-smccc.h:419:33: note: in expansion of macro '__constraint_read_1'
419 | #define __constraint_read_2 __constraint_read_1, "r" (arg2)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:420:33: note: in expansion of macro '__constraint_read_2'
420 | #define __constraint_read_3 __constraint_read_2, "r" (arg3)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:421:33: note: in expansion of macro '__constraint_read_3'
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_4'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:419:59: error: 'arg2' undeclared (first use in this function); did you mean 'r2'?
419 | #define __constraint_read_2 __constraint_read_1, "r" (arg2)
| ^~~~
include/linux/arm-smccc.h:420:33: note: in expansion of macro '__constraint_read_2'
420 | #define __constraint_read_3 __constraint_read_2, "r" (arg3)
| ^~~~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:421:33: note: in expansion of macro '__constraint_read_3'
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_4'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:420:59: error: 'arg3' undeclared (first use in this function); did you mean 'r3'?
420 | #define __constraint_read_3 __constraint_read_2, "r" (arg3)
| ^~~~
include/linux/arm-smccc.h:421:33: note: in expansion of macro '__constraint_read_3'
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_4'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:421:59: error: 'arg4' undeclared (first use in this function)
421 | #define __constraint_read_4 __constraint_read_3, "r" (arg4)
| ^~~~
include/linux/args.h:25:24: note: in expansion of macro '__constraint_read_4'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/args.h:26:27: note: in expansion of macro '__CONCAT'
26 | #define CONCATENATE(a, b) __CONCAT(a, b)
| ^~~~~~~~
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:492:21: error: '___res' undeclared (first use in this function)
492 | if (___res) \
| ^~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:52:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
52 | arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
| ^~~~~~~~~~~~~~~~~
>> arch/arm64/hyperv/hv_core.c:48:33: warning: variable 'control' set but not used [-Wunused-but-set-variable]
48 | u64 control;
| ^~~~~~~
arch/arm64/hyperv/hv_core.c: In function 'hv_set_vpreg':
include/linux/arm-smccc.h:485:29: error: '__declare_arg_9' undeclared (first use in this function)
485 | CONCATENATE(__declare_arg_, COUNT_ARGS(__VA_ARGS__)); \
| ^~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in definition of macro '__CONCAT'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/arm-smccc.h:485:17: note: in expansion of macro 'CONCATENATE'
485 | CONCATENATE(__declare_arg_, COUNT_ARGS(__VA_ARGS__)); \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:64:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
64 | arm_smccc_1_1_hvc(HV_FUNC_ID,
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:489:44: error: expected string literal before '__constraint_read_9'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~~~~~~~~
include/linux/args.h:25:24: note: in definition of macro '__CONCAT'
25 | #define __CONCAT(a, b) a ## b
| ^
include/linux/arm-smccc.h:489:32: note: in expansion of macro 'CONCATENATE'
489 | : CONCATENATE(__constraint_read_, \
| ^~~~~~~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:64:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
64 | arm_smccc_1_1_hvc(HV_FUNC_ID,
| ^~~~~~~~~~~~~~~~~
include/linux/arm-smccc.h:492:21: error: '___res' undeclared (first use in this function)
492 | if (___res) \
| ^~~~~~
include/linux/arm-smccc.h:526:33: note: in expansion of macro '__arm_smccc_1_1'
526 | #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__)
| ^~~~~~~~~~~~~~~
arch/arm64/hyperv/hv_core.c:64:9: note: in expansion of macro 'arm_smccc_1_1_hvc'
64 | arm_smccc_1_1_hvc(HV_FUNC_ID,
| ^~~~~~~~~~~~~~~~~
vim +/output_address +28 arch/arm64/hyperv/hv_core.c
57d276bbbd3224 Michael Kelley 2021-08-04 20
57d276bbbd3224 Michael Kelley 2021-08-04 21 /*
57d276bbbd3224 Michael Kelley 2021-08-04 22 * hv_do_hypercall- Invoke the specified hypercall
57d276bbbd3224 Michael Kelley 2021-08-04 23 */
57d276bbbd3224 Michael Kelley 2021-08-04 24 u64 hv_do_hypercall(u64 control, void *input, void *output)
57d276bbbd3224 Michael Kelley 2021-08-04 25 {
57d276bbbd3224 Michael Kelley 2021-08-04 26 struct arm_smccc_res res;
57d276bbbd3224 Michael Kelley 2021-08-04 @27 u64 input_address;
57d276bbbd3224 Michael Kelley 2021-08-04 @28 u64 output_address;
57d276bbbd3224 Michael Kelley 2021-08-04 29
57d276bbbd3224 Michael Kelley 2021-08-04 30 input_address = input ? virt_to_phys(input) : 0;
57d276bbbd3224 Michael Kelley 2021-08-04 31 output_address = output ? virt_to_phys(output) : 0;
57d276bbbd3224 Michael Kelley 2021-08-04 32
57d276bbbd3224 Michael Kelley 2021-08-04 @33 arm_smccc_1_1_hvc(HV_FUNC_ID, control,
57d276bbbd3224 Michael Kelley 2021-08-04 34 input_address, output_address, &res);
57d276bbbd3224 Michael Kelley 2021-08-04 35 return res.a0;
57d276bbbd3224 Michael Kelley 2021-08-04 36 }
57d276bbbd3224 Michael Kelley 2021-08-04 37 EXPORT_SYMBOL_GPL(hv_do_hypercall);
57d276bbbd3224 Michael Kelley 2021-08-04 38
57d276bbbd3224 Michael Kelley 2021-08-04 39 /*
57d276bbbd3224 Michael Kelley 2021-08-04 40 * hv_do_fast_hypercall8 -- Invoke the specified hypercall
57d276bbbd3224 Michael Kelley 2021-08-04 41 * with arguments in registers instead of physical memory.
57d276bbbd3224 Michael Kelley 2021-08-04 42 * Avoids the overhead of virt_to_phys for simple hypercalls.
57d276bbbd3224 Michael Kelley 2021-08-04 43 */
57d276bbbd3224 Michael Kelley 2021-08-04 44
57d276bbbd3224 Michael Kelley 2021-08-04 45 u64 hv_do_fast_hypercall8(u16 code, u64 input)
57d276bbbd3224 Michael Kelley 2021-08-04 46 {
57d276bbbd3224 Michael Kelley 2021-08-04 47 struct arm_smccc_res res;
57d276bbbd3224 Michael Kelley 2021-08-04 @48 u64 control;
57d276bbbd3224 Michael Kelley 2021-08-04 49
57d276bbbd3224 Michael Kelley 2021-08-04 50 control = (u64)code | HV_HYPERCALL_FAST_BIT;
57d276bbbd3224 Michael Kelley 2021-08-04 51
57d276bbbd3224 Michael Kelley 2021-08-04 @52 arm_smccc_1_1_hvc(HV_FUNC_ID, control, input, &res);
57d276bbbd3224 Michael Kelley 2021-08-04 53 return res.a0;
57d276bbbd3224 Michael Kelley 2021-08-04 54 }
57d276bbbd3224 Michael Kelley 2021-08-04 55 EXPORT_SYMBOL_GPL(hv_do_fast_hypercall8);
57d276bbbd3224 Michael Kelley 2021-08-04 56
:::::: The code at line 28 was first introduced by commit
:::::: 57d276bbbd322409bb6f7c6446187a29953f8ded arm64: hyperv: Add Hyper-V hypercall and register access utilities
:::::: TO: Michael Kelley <mikelley@microsoft.com>
:::::: CC: Wei Liu <wei.liu@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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