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Wed, 30 Mar 2022 14:22:07 +0000 Date: Wed, 30 Mar 2022 22:21:49 +0800 From: kernel test robot To: Will Deacon Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org Subject: [ammarfaizi2-block:google/android/kernel/common/android13-5.15 5600/5615] arch/arm64/kvm/hyp/nvhe/psci-relay.c:249:6: warning: no previous prototype for function 'psci_mem_protect_inc' Message-ID: <202203302232.NQaL6oOJ-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.15 head: 73a2a894a9b4d0fe1ba09039e381e658c1f62593 commit: 4347917056dadaf7856cce8312eb1c55e1372a2a [5600/5615] ANDROID: KVM: arm64: Use PSCI MEM_PROTECT to zap guest pages on reset config: arm64-randconfig-r036-20220330 (https://download.01.org/0day-ci/archive/20220330/202203302232.NQaL6oOJ-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d) 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://github.com/ammarfaizi2/linux-block/commit/4347917056dadaf7856cce8312eb1c55e1372a2a git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.15 git checkout 4347917056dadaf7856cce8312eb1c55e1372a2a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): arch/arm64/kvm/hyp/nvhe/psci-relay.c:204:28: warning: no previous prototype for function 'kvm_host_psci_cpu_entry' [-Wmissing-prototypes] asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on) ^ arch/arm64/kvm/hyp/nvhe/psci-relay.c:204:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on) ^ static >> arch/arm64/kvm/hyp/nvhe/psci-relay.c:249:6: warning: no previous prototype for function 'psci_mem_protect_inc' [-Wmissing-prototypes] void psci_mem_protect_inc(void) ^ arch/arm64/kvm/hyp/nvhe/psci-relay.c:249:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void psci_mem_protect_inc(void) ^ static >> arch/arm64/kvm/hyp/nvhe/psci-relay.c:256:6: warning: no previous prototype for function 'psci_mem_protect_dec' [-Wmissing-prototypes] void psci_mem_protect_dec(void) ^ arch/arm64/kvm/hyp/nvhe/psci-relay.c:256:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void psci_mem_protect_dec(void) ^ static 3 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for USB_PHY Depends on USB_SUPPORT Selected by - GKI_HIDDEN_USB_CONFIGS WARNING: unmet direct dependencies detected for SND_PCM_ELD Depends on SOUND && !UML && SND Selected by - GKI_HIDDEN_SND_CONFIGS WARNING: unmet direct dependencies detected for WEXT_PROC Depends on NET && WIRELESS && PROC_FS && WEXT_CORE Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for WEXT_PRIV Depends on NET && WIRELESS Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for PAGE_POOL Depends on NET Selected by - GKI_HIDDEN_NET_CONFIGS WARNING: unmet direct dependencies detected for WEXT_SPY Depends on NET && WIRELESS Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for PHYLINK Depends on NETDEVICES Selected by - GKI_HIDDEN_ETHERNET_CONFIGS WARNING: unmet direct dependencies detected for WIRELESS_EXT Depends on NET && WIRELESS Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for WEXT_CORE Depends on NET && WIRELESS && (CFG80211_WEXT || WIRELESS_EXT Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for NET_PTP_CLASSIFY Depends on NET Selected by - GKI_HIDDEN_NET_CONFIGS WARNING: unmet direct dependencies detected for SND_JACK Depends on SOUND && !UML && SND Selected by - GKI_HIDDEN_SND_CONFIGS WARNING: unmet direct dependencies detected for SND_VMASTER Depends on SOUND && !UML && SND Selected by - GKI_HIDDEN_SND_CONFIGS WARNING: unmet direct dependencies detected for SND_PCM_IEC958 Depends on SOUND && !UML && SND Selected by - GKI_HIDDEN_SND_SOC_CONFIGS WARNING: unmet direct dependencies detected for SND_JACK_INPUT_DEV Depends on SOUND && !UML && SND && SND_JACK Selected by - GKI_HIDDEN_SND_CONFIGS vim +/psci_mem_protect_inc +249 arch/arm64/kvm/hyp/nvhe/psci-relay.c 203 > 204 asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on) 205 { 206 struct psci_boot_args *boot_args; 207 struct kvm_cpu_context *host_ctxt; 208 209 host_ctxt = &this_cpu_ptr(&kvm_host_data)->host_ctxt; 210 211 if (is_cpu_on) 212 boot_args = this_cpu_ptr(&cpu_on_args); 213 else 214 boot_args = this_cpu_ptr(&suspend_args); 215 216 cpu_reg(host_ctxt, 0) = boot_args->r0; 217 write_sysreg_el2(boot_args->pc, SYS_ELR); 218 219 if (is_cpu_on) 220 release_boot_args(boot_args); 221 222 __host_enter(host_ctxt); 223 } 224 225 static DEFINE_HYP_SPINLOCK(mem_protect_lock); 226 227 static u64 psci_mem_protect(s64 offset) 228 { 229 static u64 cnt; 230 u64 new = cnt + offset; 231 232 hyp_assert_lock_held(&mem_protect_lock); 233 234 if (!offset || kvm_host_psci_config.version < PSCI_VERSION(1, 1)) 235 return cnt; 236 237 if (!cnt || !new) 238 psci_call(PSCI_1_1_FN64_MEM_PROTECT, offset < 0 ? 0 : 1, 0, 0); 239 240 cnt = new; 241 return cnt; 242 } 243 244 static bool psci_mem_protect_active(void) 245 { 246 return psci_mem_protect(0); 247 } 248 > 249 void psci_mem_protect_inc(void) 250 { 251 hyp_spin_lock(&mem_protect_lock); 252 psci_mem_protect(1); 253 hyp_spin_unlock(&mem_protect_lock); 254 } 255 > 256 void psci_mem_protect_dec(void) 257 { 258 hyp_spin_lock(&mem_protect_lock); 259 psci_mem_protect(-1); 260 hyp_spin_unlock(&mem_protect_lock); 261 } 262 -- 0-DAY CI Kernel Test Service https://01.org/lkp