* [broonie-ci:kvm-arm64-fgt 3/3] arch/arm64/kvm/hyp/include/hyp/switch.h:102:26: warning: variable 'host_ctxt' set but not used
@ 2023-03-20 16:18 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-03-20 16:18 UTC (permalink / raw)
To: Mark Brown; +Cc: llvm, oe-kbuild-all
Hi Mark,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git kvm-arm64-fgt
head: 5cd718c2e5c52de666e2937dc655db3766bbc3b7
commit: 5cd718c2e5c52de666e2937dc655db3766bbc3b7 [3/3] KVM: arm64: Move FGT value configuration to vCPU state
config: arm64-buildonly-randconfig-r005-20230320 (https://download.01.org/0day-ci/archive/20230321/202303210031.APdFYAx5-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git/commit/?id=5cd718c2e5c52de666e2937dc655db3766bbc3b7
git remote add broonie-ci https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git
git fetch --no-tags broonie-ci kvm-arm64-fgt
git checkout 5cd718c2e5c52de666e2937dc655db3766bbc3b7
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/hyp/vhe/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303210031.APdFYAx5-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/arm64/kvm/hyp/vhe/switch.c:7:
>> arch/arm64/kvm/hyp/include/hyp/switch.h:102:26: warning: variable 'host_ctxt' set but not used [-Wunused-but-set-variable]
struct kvm_cpu_context *host_ctxt;
^
arch/arm64/kvm/hyp/vhe/switch.c:107:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_CP15_32] = kvm_hyp_handle_cp15_32,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:108:24: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SYS64] = kvm_hyp_handle_sysreg,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:109:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SVE] = kvm_hyp_handle_fpsimd,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:110:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_FP_ASIMD] = kvm_hyp_handle_fpsimd,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:111:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_IABT_LOW] = kvm_hyp_handle_iabt_low,
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:112:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_DABT_LOW] = kvm_hyp_handle_dabt_low,
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:113:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_PAC] = kvm_hyp_handle_ptrauth,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:106:28: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = NULL,
^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
#define NULL ((void *)0)
^~~~~~~~~~~
arch/arm64/kvm/hyp/vhe/switch.c:256:17: warning: no previous prototype for function 'hyp_panic' [-Wmissing-prototypes]
void __noreturn hyp_panic(void)
^
arch/arm64/kvm/hyp/vhe/switch.c:256:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __noreturn hyp_panic(void)
^
static
arch/arm64/kvm/hyp/vhe/switch.c:266:17: warning: no previous prototype for function 'kvm_unexpected_el2_exception' [-Wmissing-prototypes]
asmlinkage void kvm_unexpected_el2_exception(void)
^
arch/arm64/kvm/hyp/vhe/switch.c:266:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void kvm_unexpected_el2_exception(void)
^
static
10 warnings generated.
vim +/host_ctxt +102 arch/arm64/kvm/hyp/include/hyp/switch.h
99
100 static inline void __deactivate_traps_common(struct kvm_vcpu *vcpu)
101 {
> 102 struct kvm_cpu_context *host_ctxt;
103
104 write_sysreg(vcpu->arch.mdcr_el2_host, mdcr_el2);
105
106 write_sysreg(0, hstr_el2);
107 if (kvm_arm_support_pmu_v3())
108 write_sysreg(0, pmuserenr_el0);
109
110 /* Restore the host FGT configuration here, */
111 if (cpus_have_final_cap(ARM64_HAS_FGT)) {
112 host_ctxt = &this_cpu_ptr(&kvm_host_data)->host_ctxt;
113
114 write_sysreg_s(__vcpu_sys_reg(vcpu, HFGRTR_EL2),
115 SYS_HFGRTR_EL2);
116 write_sysreg_s(__vcpu_sys_reg(vcpu, HFGWTR_EL2),
117 SYS_HFGWTR_EL2);
118 }
119 }
120
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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