[PATCH] KVM: arm64: pmu: Resync EL0 state on counter rotation
kernel test robot
lkp at intel.com
Wed Aug 16 14:15:56 PDT 2023
Hi Marc,
kernel test robot noticed the following build errors:
[auto build test ERROR on kvmarm/next]
[also build test ERROR on arm/for-next arm64/for-next/core soc/for-next linus/master arm/fixes v6.5-rc6 next-20230816]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Marc-Zyngier/KVM-arm64-pmu-Resync-EL0-state-on-counter-rotation/20230812-020712
base: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
patch link: https://lore.kernel.org/r/20230811180520.131727-1-maz%40kernel.org
patch subject: [PATCH] KVM: arm64: pmu: Resync EL0 state on counter rotation
config: arm-randconfig-r046-20230817 (https://download.01.org/0day-ci/archive/20230817/202308170409.yogZXrWD-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230817/202308170409.yogZXrWD-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308170409.yogZXrWD-lkp@intel.com/
All errors (new ones prefixed by >>):
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
drivers/perf/arm_pmuv3.c:148:44: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
148 | [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_RD,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmuv3.h:133:44: note: expanded from macro 'ARMV8_IMPDEF_PERFCTR_L1D_TLB_RD'
133 | #define ARMV8_IMPDEF_PERFCTR_L1D_TLB_RD 0x004E
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
drivers/perf/arm_pmuv3.c:149:45: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
149 | [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_WR,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmuv3.h:134:44: note: expanded from macro 'ARMV8_IMPDEF_PERFCTR_L1D_TLB_WR'
134 | #define ARMV8_IMPDEF_PERFCTR_L1D_TLB_WR 0x004F
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
drivers/perf/arm_pmuv3.c:150:42: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
150 | [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_RD,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmuv3.h:131:50: note: expanded from macro 'ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_RD'
131 | #define ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_RD 0x004C
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
drivers/perf/arm_pmuv3.c:151:43: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
151 | [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_WR,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmuv3.h:132:50: note: expanded from macro 'ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_WR'
132 | #define ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_WR 0x004D
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
drivers/perf/arm_pmuv3.c:153:44: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
153 | [C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmuv3.h:148:46: note: expanded from macro 'ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD'
148 | #define ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD 0x0060
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
drivers/perf/arm_pmuv3.c:154:45: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
154 | [C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmuv3.h:149:46: note: expanded from macro 'ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR'
149 | #define ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR 0x0061
| ^~~~~~
drivers/perf/arm_pmuv3.c:141:2: note: previous initialization is here
141 | PERF_CACHE_MAP_ALL_UNSUPPORTED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:45:31: note: expanded from macro 'PERF_CACHE_MAP_ALL_UNSUPPORTED'
45 | [0 ... C(RESULT_MAX) - 1] = CACHE_OP_UNSUPPORTED, \
| ^~~~~~~~~~~~~~~~~~~~
include/linux/perf/arm_pmu.h:37:31: note: expanded from macro 'CACHE_OP_UNSUPPORTED'
37 | #define CACHE_OP_UNSUPPORTED 0xFFFF
| ^~~~~~
>> drivers/perf/arm_pmuv3.c:776:2: error: call to undeclared function 'kvm_vcpu_pmu_resync_el0'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
776 | kvm_vcpu_pmu_resync_el0();
| ^
55 warnings and 1 error generated.
vim +/kvm_vcpu_pmu_resync_el0 +776 drivers/perf/arm_pmuv3.c
758
759 static void armv8pmu_start(struct arm_pmu *cpu_pmu)
760 {
761 struct perf_event_context *ctx;
762 int nr_user = 0;
763
764 ctx = perf_cpu_task_ctx();
765 if (ctx)
766 nr_user = ctx->nr_user;
767
768 if (sysctl_perf_user_access && nr_user)
769 armv8pmu_enable_user_access(cpu_pmu);
770 else
771 armv8pmu_disable_user_access();
772
773 /* Enable all counters */
774 armv8pmu_pmcr_write(armv8pmu_pmcr_read() | ARMV8_PMU_PMCR_E);
775
> 776 kvm_vcpu_pmu_resync_el0();
777 }
778
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