linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android13-5.15 2786/5614] arch/arm64/kvm/arm.c:2011:46: error: 'smccc_trng

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Message-ID: <202203301057.pfu4qQMj-lkp@intel.com>
Date:   Wed, 30 Mar 2022 10:46:46 +0800
From:   kernel test robot <lkp@...el.com>
To:     Will Deacon <will@...nel.org>
Cc:     kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Ard Biesheuvel <ardb@...gle.com>
Subject: [ammarfaizi2-block:google/android/kernel/common/android13-5.15
 2786/5614] arch/arm64/kvm/arm.c:2011:46: error: 'smccc_trng_available'
 undeclared

Hi Will,

FYI, the error/warning still remains.

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.15
head:   12972dd7bfa306aa07c92966c4efe7b1c0c5e043
commit: 888643ea37b504cb32afdd6430698d1e92a79a71 [2786/5614] ANDROID: KVM: arm64: relay entropy requests from protected guests directly to secure
config: arm64-randconfig-r013-20220327 (https://download.01.org/0day-ci/archive/20220330/202203301057.pfu4qQMj-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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://github.com/ammarfaizi2/linux-block/commit/888643ea37b504cb32afdd6430698d1e92a79a71
        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 888643ea37b504cb32afdd6430698d1e92a79a71
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/

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

All errors (new ones prefixed by >>):

   arch/arm64/kvm/arm.c: In function 'kvm_hyp_init_protection':
>> arch/arm64/kvm/arm.c:2011:46: error: 'smccc_trng_available' undeclared (first use in this function)
    2011 |         kvm_nvhe_sym(smccc_trng_available) = smccc_trng_available;
         |                                              ^~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/arm.c:2011:46: note: each undeclared identifier is reported only once for each function it appears in


vim +/smccc_trng_available +2011 arch/arm64/kvm/arm.c

  1997	
  1998	static int kvm_hyp_init_protection(u32 hyp_va_bits)
  1999	{
  2000		void *addr = phys_to_virt(hyp_mem_base);
  2001		int ret;
  2002	
  2003		kvm_nvhe_sym(id_aa64pfr0_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1);
  2004		kvm_nvhe_sym(id_aa64pfr1_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64PFR1_EL1);
  2005		kvm_nvhe_sym(id_aa64isar0_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64ISAR0_EL1);
  2006		kvm_nvhe_sym(id_aa64isar1_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64ISAR1_EL1);
  2007		kvm_nvhe_sym(id_aa64mmfr0_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
  2008		kvm_nvhe_sym(id_aa64mmfr1_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64MMFR1_EL1);
  2009		kvm_nvhe_sym(id_aa64mmfr2_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64MMFR2_EL1);
  2010		kvm_nvhe_sym(__icache_flags) = __icache_flags;
> 2011		kvm_nvhe_sym(smccc_trng_available) = smccc_trng_available;
  2012	
  2013		ret = create_hyp_mappings(addr, addr + hyp_mem_size, PAGE_HYP);
  2014		if (ret)
  2015			return ret;
  2016	
  2017		ret = init_stage2_iommu();
  2018		if (ret < 0)
  2019			return ret;
  2020	
  2021		ret = do_pkvm_init(hyp_va_bits, (enum kvm_iommu_driver)ret);
  2022		if (ret)
  2023			return ret;
  2024	
  2025		free_hyp_pgds();
  2026	
  2027		return 0;
  2028	}
  2029	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp