On Wed, Nov 6, 2024 at 3:22 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > Hi James, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on a27e0515592ec9ca28e0d027f42568c47b314784] > > url: https://github.com/intel-lab-lkp/linux/commits/James-Houghton/KVM-Remove-kvm_handle_hva_range-helper-functions/20241106-025133 > base: a27e0515592ec9ca28e0d027f42568c47b314784 > patch link: https://lore.kernel.org/r/20241105184333.2305744-5-jthoughton%40google.com > patch subject: [PATCH v8 04/11] KVM: x86/mmu: Relax locking for kvm_test_age_gfn and kvm_age_gfn > config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241106/202411061526.RAuCXKJh-lkp@xxxxxxxxx/config) > compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411061526.RAuCXKJh-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/202411061526.RAuCXKJh-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > arch/x86/kvm/mmu/tdp_mmu.c: In function 'kvm_tdp_mmu_age_spte': > >> arch/x86/kvm/mmu/tdp_mmu.c:1189:23: warning: ignoring return value of '__tdp_mmu_set_spte_atomic' declared with attribute 'warn_unused_result' [-Wunused-result] > 1189 | (void)__tdp_mmu_set_spte_atomic(iter, new_spte); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Well, I saw this compiler warning in my latest rebase and thought the `(void)` would fix it. I guess the next best way to fix it would be to assign to an `int __maybe_unused`. I'll do for a v9, or Sean if you're going to take the series (maybe? :)), go ahead and apply whatever fix you like.
