linux-kernel - arch/arm64/kvm/hyp/nvhe/hyp-main.c:18:6: warning: no previous prototype for 'handle

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Message-ID: <202101141232.uOtwe6UA-lkp@intel.com>
Date:   Thu, 14 Jan 2021 12:59:43 +0800
From:   kernel test robot <lkp@...el.com>
To:     Andrew Scull <ascull@...gle.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>
Subject: arch/arm64/kvm/hyp/nvhe/hyp-main.c:18:6: warning: no previous
 prototype for 'handle_trap'

Hi Andrew,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   65f0d2414b7079556fbbcc070b3d1c9f9587606d
commit: 4e3393a969a0bdaae83263918b6824b2d08c3996 KVM: arm64: nVHE: Switch to hyp context for EL2
date:   4 months ago
config: arm64-randconfig-r005-20210113 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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/torvalds/linux.git/commit/?id=4e3393a969a0bdaae83263918b6824b2d08c3996
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 4e3393a969a0bdaae83263918b6824b2d08c3996
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 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/hyp-main.c:18:6: warning: no previous prototype for 'handle_trap' [-Wmissing-prototypes]
      18 | void handle_trap(struct kvm_cpu_context *host_ctxt)
         |      ^~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for NVMEM_IMX_OCOTP
   Depends on NVMEM && (ARCH_MXC || COMPILE_TEST && HAS_IOMEM
   Selected by
   - ARM_IMX6Q_CPUFREQ && CPU_FREQ && (ARM || ARM64 && ARCH_MXC && REGULATOR_ANATOP


vim +/handle_trap +18 arch/arm64/kvm/hyp/nvhe/hyp-main.c

    14	
    15	typedef unsigned long (*hypcall_fn_t)
    16		(unsigned long, unsigned long, unsigned long);
    17	
  > 18	void handle_trap(struct kvm_cpu_context *host_ctxt)

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

Download attachment ".config.gz" of type "application/gzip" (34955 bytes)