On Wed, 23 Feb 2022 at 13:54, Marc Zyngier <maz@xxxxxxxxxx> wrote: > > On 2022-02-23 12:34, Philip Li wrote: > > On Wed, Feb 23, 2022 at 09:16:59AM +0000, Marc Zyngier wrote: > >> On Wed, 23 Feb 2022 09:05:18 +0000, > >> kernel test robot <lkp@xxxxxxxxx> wrote: > >> > > >> > Hi Kalesh, > >> > > >> > Thank you for the patch! Perhaps something to improve: > >> > > >> > [auto build test WARNING on cfb92440ee71adcc2105b0890bb01ac3cddb8507] > >> > > >> > url: https://github.com/0day-ci/linux/commits/Kalesh-Singh/KVM-arm64-Hypervisor-stack-enhancements/20220223-010522 > >> > base: cfb92440ee71adcc2105b0890bb01ac3cddb8507 > >> > config: arm64-randconfig-r011-20220221 (https://download.01.org/0day-ci/archive/20220223/202202231727.L621fVgD-lkp@xxxxxxxxx/config) > >> > compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) > >> > 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/0day-ci/linux/commit/7fe99fd40f7c4b2973218045ca5b9c9160524db1 > >> > git remote add linux-review https://github.com/0day-ci/linux > >> > git fetch --no-tags linux-review Kalesh-Singh/KVM-arm64-Hypervisor-stack-enhancements/20220223-010522 > >> > git checkout 7fe99fd40f7c4b2973218045ca5b9c9160524db1 > >> > # 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@xxxxxxxxx> > >> > > >> > All warnings (new ones prefixed by >>): > >> > > >> > include/linux/stddef.h:8:14: note: expanded from macro 'NULL' > >> > #define NULL ((void *)0) > >> > ^~~~~~~~~~~ > >> > arch/arm64/kvm/hyp/nvhe/switch.c:200:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] > >> > [ESR_ELx_EC_FP_ASIMD] = kvm_hyp_handle_fpsimd, > >> > ^~~~~~~~~~~~~~~~~~~~~ > >> > arch/arm64/kvm/hyp/nvhe/switch.c:196:28: note: previous initialization is here > >> > [0 ... ESR_ELx_EC_MAX] = NULL, > >> > ^~~~ > >> > include/linux/stddef.h:8:14: note: expanded from macro 'NULL' > >> > #define NULL ((void *)0) > >> > ^~~~~~~~~~~ > >> > >> Kalesh, please ignore this nonsense. There may be things to improve, > >> but this is *NOT* one of them. > >> > >> These reports are pretty useless, and just lead people to ignore real > >> bug reports. > > > > Hi Kalesh, sorry there're some irrelevant issues mixed in the report, > > kindly ignore them. And the valuable ones are the new ones that > > prefixed by >>, as the below one in original report. > > > >>> arch/arm64/kvm/hyp/nvhe/switch.c:372:17: warning: no previous > >>> prototype for function 'hyp_panic_bad_stack' [-Wmissing-prototypes] > > void __noreturn hyp_panic_bad_stack(void) > > ^ > > This is only called from assembly code, so a prototype wouldn't bring > much. > Should probably be marked as 'asmlinkage' then. I've suggested many times already that this bogus diagnostic should either be disabled, or disregard 'asmlinkage' symbols. _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
