Re: arch/powerpc/kvm/e500mc.c:95:15: error: invalid instruction

From: Sean Christopherson
Date: Fri Jul 21 2023 - 19:38:47 EST


On Fri, Jul 21, 2023, kernel test robot wrote:
> Hi Sean,
>
> FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: f7e3a1bafdea735050dfde00523cf505dc7fd309
> commit: e83ca8cfa286c9fc78b585b0e66df7f542bcbcf2 KVM: PPC: booke: Mark three local functions "static"
> date: 4 months ago
> config: powerpc-randconfig-r001-20230721 (https://download.01.org/0day-ci/archive/20230721/202307211945.TSPcyOhh-lkp@xxxxxxxxx/config)
> compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
> reproduce: (https://download.01.org/0day-ci/archive/20230721/202307211945.TSPcyOhh-lkp@xxxxxxxxx/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202307211945.TSPcyOhh-lkp@xxxxxxxxx/
>
> All errors (new ones prefixed by >>):
>
> >> arch/powerpc/kvm/e500mc.c:95:15: error: invalid instruction
> 95 | asm volatile("tlbilxlpid");

I assume this is a binutils bug? I ran into a similar problem on PPC a while
back where I couldn't cross-compile even relatively basic PPC code.