tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: ae0c77e1bc6963c67c6c09e8c72959fcb1ed8d5f commit: 1dc0f02d53382a016e57fcd24a42f8f62bd02fd4 [1434/9183] KVM: arm64: Do arm/arch initialization without bouncing through kvm_init() config: arm64-buildonly-randconfig-r005-20230130 (https://download.01.org/0day-ci/archive/20230130/202301301801.y5O08tQx-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 12.1.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=1dc0f02d53382a016e57fcd24a42f8f62bd02fd4 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 1dc0f02d53382a016e57fcd24a42f8f62bd02fd4 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): arch/arm64/kvm/arm.c:133: warning: Function parameter or member 'type' not described in 'kvm_arch_init_vm' arch/arm64/kvm/arm.c:1933: warning: expecting prototype for Inits Hyp(). Prototype was for init_hyp_mode() instead >> arch/arm64/kvm/arm.c:2211: warning: expecting prototype for Initialize Hyp(). Prototype was for kvm_arm_init() instead vim +2211 arch/arm64/kvm/arm.c 2412405b3141cf virt/kvm/arm/arm.c Eric Auger 2017-10-27 2206 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2207 /** 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2208 * Initialize Hyp-mode and memory mappings on all CPUs. 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2209 */ 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2210 int kvm_arm_init(void) 749cf76c5a363e arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 @2211 { 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2212 int err; fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2213 bool in_hyp_mode; 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2214 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2215 if (!is_hyp_mode_available()) { 58d0d19a204604 virt/kvm/arm/arm.c Ard Biesheuvel 2017-11-28 2216 kvm_info("HYP mode not available\n"); 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2217 return -ENODEV; 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2218 } 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2219 b6a68b97af23cc arch/arm64/kvm/arm.c Marc Zyngier 2021-10-01 2220 if (kvm_get_mode() == KVM_MODE_NONE) { b6a68b97af23cc arch/arm64/kvm/arm.c Marc Zyngier 2021-10-01 2221 kvm_info("KVM disabled from command line\n"); b6a68b97af23cc arch/arm64/kvm/arm.c Marc Zyngier 2021-10-01 2222 return -ENODEV; b6a68b97af23cc arch/arm64/kvm/arm.c Marc Zyngier 2021-10-01 2223 } b6a68b97af23cc arch/arm64/kvm/arm.c Marc Zyngier 2021-10-01 2224 f1f0c0cfeaa7c1 arch/arm64/kvm/arm.c Alexandru Elisei 2022-04-28 2225 err = kvm_sys_reg_table_init(); f1f0c0cfeaa7c1 arch/arm64/kvm/arm.c Alexandru Elisei 2022-04-28 2226 if (err) { f1f0c0cfeaa7c1 arch/arm64/kvm/arm.c Alexandru Elisei 2022-04-28 2227 kvm_info("Error initializing system register tables"); f1f0c0cfeaa7c1 arch/arm64/kvm/arm.c Alexandru Elisei 2022-04-28 2228 return err; f1f0c0cfeaa7c1 arch/arm64/kvm/arm.c Alexandru Elisei 2022-04-28 2229 } f1f0c0cfeaa7c1 arch/arm64/kvm/arm.c Alexandru Elisei 2022-04-28 2230 33e5f4e50917c2 virt/kvm/arm/arm.c Marc Zyngier 2018-12-06 2231 in_hyp_mode = is_kernel_in_hyp_mode(); 33e5f4e50917c2 virt/kvm/arm/arm.c Marc Zyngier 2018-12-06 2232 96d389ca10110d arch/arm64/kvm/arm.c Rob Herring 2020-10-28 2233 if (cpus_have_final_cap(ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE) || 96d389ca10110d arch/arm64/kvm/arm.c Rob Herring 2020-10-28 2234 cpus_have_final_cap(ARM64_WORKAROUND_1508412)) abf532cceaca9c arch/arm64/kvm/arm.c Rob Herring 2020-08-03 2235 kvm_info("Guests without required CPU erratum workarounds can deadlock system!\n" \ abf532cceaca9c arch/arm64/kvm/arm.c Rob Herring 2020-08-03 2236 "Only trusted guests should be used on this system.\n"); abf532cceaca9c arch/arm64/kvm/arm.c Rob Herring 2020-08-03 2237 bf249d9e362f10 arch/arm64/kvm/arm.c Anshuman Khandual 2021-08-12 2238 err = kvm_set_ipa_limit(); 1e947bad0b63b3 arch/arm/kvm/arm.c Marc Zyngier 2015-01-29 2239 if (err) 1e947bad0b63b3 arch/arm/kvm/arm.c Marc Zyngier 2015-01-29 2240 return err; 8146875de7d47c arch/arm/kvm/arm.c Srivatsa S. Bhat 2014-03-18 2241 a3be836df7cb77 virt/kvm/arm/arm.c Dave Martin 2019-04-12 2242 err = kvm_arm_init_sve(); 0f062bfe36b63c virt/kvm/arm/arm.c Dave Martin 2019-02-28 2243 if (err) 0f062bfe36b63c virt/kvm/arm/arm.c Dave Martin 2019-02-28 2244 return err; 0f062bfe36b63c virt/kvm/arm/arm.c Dave Martin 2019-02-28 2245 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2246 err = kvm_arm_vmid_alloc_init(); 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2247 if (err) { 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2248 kvm_err("Failed to initialize VMID allocator.\n"); 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2249 return err; 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2250 } 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2251 fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2252 if (!in_hyp_mode) { 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2253 err = init_hyp_mode(); 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2254 if (err) 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2255 goto out_err; fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2256 } 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2257 b881cdce77b48b arch/arm64/kvm/arm.c Will Deacon 2020-11-13 2258 err = kvm_init_vector_slots(); b881cdce77b48b arch/arm64/kvm/arm.c Will Deacon 2020-11-13 2259 if (err) { b881cdce77b48b arch/arm64/kvm/arm.c Will Deacon 2020-11-13 2260 kvm_err("Cannot initialise vector slots\n"); 6baaeda878445d arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2261 goto out_hyp; b881cdce77b48b arch/arm64/kvm/arm.c Will Deacon 2020-11-13 2262 } b881cdce77b48b arch/arm64/kvm/arm.c Will Deacon 2020-11-13 2263 1e947bad0b63b3 arch/arm/kvm/arm.c Marc Zyngier 2015-01-29 2264 err = init_subsystems(); 1e947bad0b63b3 arch/arm/kvm/arm.c Marc Zyngier 2015-01-29 2265 if (err) 78b3bf485d5cb5 arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2266 goto out_hyp; 1fcf7ce0c60213 arch/arm/kvm/arm.c Lorenzo Pieralisi 2013-08-05 2267 bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2268 if (!in_hyp_mode) { bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2269 err = finalize_hyp_mode(); bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2270 if (err) { bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2271 kvm_err("Failed to finalize Hyp protection\n"); 6baaeda878445d arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2272 goto out_subs; bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2273 } bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2274 } bfa79a805454f7 arch/arm64/kvm/arm.c Quentin Perret 2021-03-19 2275 f19f6644a5433c arch/arm64/kvm/arm.c David Brazdil 2020-12-02 2276 if (is_protected_kvm_enabled()) { 3eb681fba2bf8b arch/arm64/kvm/arm.c David Brazdil 2020-12-02 2277 kvm_info("Protected nVHE mode initialized successfully\n"); f19f6644a5433c arch/arm64/kvm/arm.c David Brazdil 2020-12-02 2278 } else if (in_hyp_mode) { fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2279 kvm_info("VHE mode initialized successfully\n"); f19f6644a5433c arch/arm64/kvm/arm.c David Brazdil 2020-12-02 2280 } else { fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2281 kvm_info("Hyp mode initialized successfully\n"); f19f6644a5433c arch/arm64/kvm/arm.c David Brazdil 2020-12-02 2282 } fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2283 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2284 /* 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2285 * FIXME: Do something reasonable if kvm_init() fails after pKVM 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2286 * hypervisor protection is finalized. 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2287 */ 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2288 err = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2289 if (err) 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2290 goto out_subs; 1dc0f02d53382a arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2291 749cf76c5a363e arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2292 return 0; 1e947bad0b63b3 arch/arm/kvm/arm.c Marc Zyngier 2015-01-29 2293 6baaeda878445d arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2294 out_subs: 78b3bf485d5cb5 arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2295 teardown_subsystems(); 6baaeda878445d arch/arm64/kvm/arm.c Sean Christopherson 2022-11-30 2296 out_hyp: fe7d7b03c61f6d virt/kvm/arm/arm.c Julien Thierry 2017-10-20 2297 if (!in_hyp_mode) 1e947bad0b63b3 arch/arm/kvm/arm.c Marc Zyngier 2015-01-29 2298 teardown_hyp_mode(); 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2299 out_err: 3248136b3637e1 arch/arm64/kvm/arm.c Julien Grall 2021-11-22 2300 kvm_arm_vmid_alloc_free(); 342cd0ab0e6ca3 arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2301 return err; 749cf76c5a363e arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2302 } 749cf76c5a363e arch/arm/kvm/arm.c Christoffer Dall 2013-01-20 2303 :::::: The code at line 2211 was first introduced by commit :::::: 749cf76c5a363e1383108a914ea09530bfa0bd43 KVM: ARM: Initial skeleton to compile KVM support :::::: TO: Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx> :::::: CC: Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
