arch/arm64/kvm/hyp/nvhe/psci-relay.c:152:21: sparse: sparse: incorrect type in initializer (different address spaces)

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f838f8d2b694cf9d524dc4423e9dd2db13892f3f
commit: cdf367192766ad11a03e8d5098556be43b8eb6b0 KVM: arm64: Intercept host's CPU_ON SMCs
date:   3 weeks ago
config: arm64-randconfig-s032-20201223 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-184-g1b896707-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cdf367192766ad11a03e8d5098556be43b8eb6b0
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout cdf367192766ad11a03e8d5098556be43b8eb6b0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


"sparse warnings: (new ones prefixed by >>)"
>> arch/arm64/kvm/hyp/nvhe/psci-relay.c:152:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct psci_boot_args * @@
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:152:21: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:152:21: sparse:     got struct psci_boot_args *
>> arch/arm64/kvm/hyp/nvhe/psci-relay.c:153:23: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct kvm_nvhe_init_params * @@
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:153:23: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:153:23: sparse:     got struct kvm_nvhe_init_params *
>> arch/arm64/kvm/hyp/nvhe/psci-relay.c:179:22: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct kvm_host_data * @@
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:179:22: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:179:22: sparse:     got struct kvm_host_data *
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:180:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct psci_boot_args * @@
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:180:21: sparse:     expected void const [noderef] __percpu *__vpp_verify
   arch/arm64/kvm/hyp/nvhe/psci-relay.c:180:21: sparse:     got struct psci_boot_args *

vim +152 arch/arm64/kvm/hyp/nvhe/psci-relay.c

   129	
   130	static int psci_cpu_on(u64 func_id, struct kvm_cpu_context *host_ctxt)
   131	{
   132		DECLARE_REG(u64, mpidr, host_ctxt, 1);
   133		DECLARE_REG(unsigned long, pc, host_ctxt, 2);
   134		DECLARE_REG(unsigned long, r0, host_ctxt, 3);
   135	
   136		unsigned int cpu_id;
   137		struct psci_boot_args *boot_args;
   138		struct kvm_nvhe_init_params *init_params;
   139		int ret;
   140	
   141		/*
   142		 * Find the logical CPU ID for the given MPIDR. The search set is
   143		 * the set of CPUs that were online at the point of KVM initialization.
   144		 * Booting other CPUs is rejected because their cpufeatures were not
   145		 * checked against the finalized capabilities. This could be relaxed
   146		 * by doing the feature checks in hyp.
   147		 */
   148		cpu_id = find_cpu_id(mpidr);
   149		if (cpu_id == INVALID_CPU_ID)
   150			return PSCI_RET_INVALID_PARAMS;
   151	
 > 152		boot_args = per_cpu_ptr(hyp_symbol_addr(cpu_on_args), cpu_id);
 > 153		init_params = per_cpu_ptr(hyp_symbol_addr(kvm_init_params), cpu_id);
   154	
   155		/* Check if the target CPU is already being booted. */
   156		if (!try_acquire_boot_args(boot_args))
   157			return PSCI_RET_ALREADY_ON;
   158	
   159		boot_args->pc = pc;
   160		boot_args->r0 = r0;
   161		wmb();
   162	
   163		ret = psci_call(func_id, mpidr,
   164				__hyp_pa(hyp_symbol_addr(kvm_hyp_cpu_entry)),
   165				__hyp_pa(init_params));
   166	
   167		/* If successful, the lock will be released by the target CPU. */
   168		if (ret != PSCI_RET_SUCCESS)
   169			release_boot_args(boot_args);
   170	
   171		return ret;
   172	}
   173	
   174	asmlinkage void __noreturn kvm_host_psci_cpu_entry(bool is_cpu_on)
   175	{
   176		struct psci_boot_args *boot_args;
   177		struct kvm_cpu_context *host_ctxt;
   178	
 > 179		host_ctxt = &this_cpu_ptr(hyp_symbol_addr(kvm_host_data))->host_ctxt;
   180		boot_args = this_cpu_ptr(hyp_symbol_addr(cpu_on_args));
   181	
   182		cpu_reg(host_ctxt, 0) = boot_args->r0;
   183		write_sysreg_el2(boot_args->pc, SYS_ELR);
   184		release_boot_args(boot_args);
   185	
   186		__host_enter(host_ctxt);
   187	}
   188	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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