kernel test robot <lkp@xxxxxxxxx> writes: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 3b47bc037bd44f142ac09848e8d3ecccc726be99 > commit: a789aeba419647c44d7e7320de20fea037c211d0 KVM: VMX: Rename "vmx/evmcs.{ch}" to "vmx/hyperv.{ch}" > date: 1 year ago > config: x86_64-randconfig-123-20231130 (https://download.01.org/0day-ci/archive/20231130/202311302231.sinLrAig-lkp@xxxxxxxxx/config) > compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231130/202311302231.sinLrAig-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/202311302231.sinLrAig-lkp@xxxxxxxxx/ > > sparse warnings: (new ones prefixed by >>) > arch/x86/kvm/vmx/hyperv.h:79:30: sparse: sparse: cast truncates bits from constant value (a000a becomes a) This is what ROL16() macro does but the thing is: we actually want to truncate bits by doing an explicit (u16) cast. We can probably replace this with '& 0xffff': #define ROL16(val, n) ((((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))) & 0xffff) but honestly I don't see much point... -- Vitaly
