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X-CSE-ConnectionGUID: ER0/fd4JSBKdwV/p5YFuPw== X-CSE-MsgGUID: Mrsrsi/+SHCGR8NGg1EBCA== X-IronPort-AV: E=McAfee;i="6800,10657,11813"; a="92409614" X-IronPort-AV: E=Sophos;i="6.24,200,1774335600"; d="scan'208";a="92409614" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jun 2026 03:29:56 -0700 X-CSE-ConnectionGUID: +eLpJGN6QOq7Rlo+8cn/RQ== X-CSE-MsgGUID: 9oEz1F5bTxG+Ro32o91BUA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,200,1774335600"; d="scan'208";a="243853030" Received: from lkp-server01.sh.intel.com (HELO f0d55cb201f0) ([10.239.97.150]) by fmviesa007.fm.intel.com with ESMTP; 12 Jun 2026 03:29:54 -0700 Received: from kbuild by f0d55cb201f0 with local (Exim 4.98.2) (envelope-from ) id 1wXz95-00000000Ocf-3vYC; Fri, 12 Jun 2026 10:29:51 +0000 Date: Fri, 12 Jun 2026 18:29:01 +0800 From: kernel test robot To: David Woodhouse Cc: oe-kbuild-all@lists.linux.dev Subject: [dwmw2:kvmclock6 12/36] arch/x86/kvm/x86.c:3249:1: warning: label 'fallback' defined but not used Message-ID: <202606121847.WMpRF92x-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: git://git.infradead.org/users/dwmw2/linux kvmclock6 head: f0cde567611e75fa2459c24c7aea06d619f07f8b commit: 0dba225ab43627430d6b2f8be1143ea133116e96 [12/36] KVM: x86: Restructure get_kvmclock() config: i386-buildonly-randconfig-004-20260612 (https://download.01.org/0day-ci/archive/20260612/202606121847.WMpRF92x-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260612/202606121847.WMpRF92x-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202606121847.WMpRF92x-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/x86/kvm/x86.c: In function 'get_kvmclock': >> arch/x86/kvm/x86.c:3249:1: warning: label 'fallback' defined but not used [-Wunused-label] 3249 | fallback: | ^~~~~~~~ >> arch/x86/kvm/x86.c:3206:39: warning: unused variable 'hv_clock' [-Wunused-variable] 3206 | struct pvclock_vcpu_time_info hv_clock; | ^~~~~~~~ vim +/fallback +3249 arch/x86/kvm/x86.c 3202 3203 static void get_kvmclock(struct kvm *kvm, struct kvm_clock_data *data) 3204 { 3205 struct kvm_arch *ka = &kvm->arch; > 3206 struct pvclock_vcpu_time_info hv_clock; 3207 unsigned int seq; 3208 3209 do { 3210 seq = read_seqcount_begin(&ka->pvclock_sc); 3211 3212 data->flags = 0; 3213 #ifdef CONFIG_X86_64 3214 if (ka->use_master_clock) { 3215 struct timespec64 ts; 3216 3217 /* 3218 * The RDTSC and get_cpu_tsc_khz() must happen on 3219 * the same CPU. 3220 */ 3221 get_cpu(); 3222 3223 if (kvm_get_walltime_and_clockread(&ts, &data->host_tsc)) { 3224 data->realtime = ts.tv_nsec + NSEC_PER_SEC * ts.tv_sec; 3225 data->flags |= KVM_CLOCK_REALTIME | KVM_CLOCK_HOST_TSC; 3226 } else { 3227 /* 3228 * Clock read failed (e.g. clocksource is 3229 * transitioning away from TSC). Fall back to 3230 * the non-master-clock path rather than 3231 * spinning. 3232 */ 3233 put_cpu(); 3234 goto fallback; 3235 } 3236 3237 data->flags |= KVM_CLOCK_TSC_STABLE; 3238 hv_clock.tsc_timestamp = ka->master_cycle_now; 3239 hv_clock.system_time = ka->master_kernel_ns + ka->kvmclock_offset; 3240 kvm_get_time_scale(NSEC_PER_SEC, get_cpu_tsc_khz() * 1000LL, 3241 &hv_clock.tsc_shift, 3242 &hv_clock.tsc_to_system_mul); 3243 data->clock = __pvclock_read_cycles(&hv_clock, data->host_tsc); 3244 3245 put_cpu(); 3246 } else 3247 #endif 3248 { > 3249 fallback: 3250 data->clock = get_kvmclock_base_ns() + ka->kvmclock_offset; 3251 } 3252 } while (read_seqcount_retry(&ka->pvclock_sc, seq)); 3253 } 3254 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki