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Date: Wed, 30 Mar 2022 22:21:49 +0800
From: kernel test robot <lkp@...el.com>
To: Will Deacon <willdeacon@...gle.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
linux-kernel@...r.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'
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 <lkp@...el.com>
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
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