Hi Grzegorz, [auto build test WARNING on tip/x86/core] [also build test WARNING on v4.9 next-20161216] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Grzegorz-Andrejczuk/Enabling-Ring-3-MONITOR-MWAIT-feature-for-Knights-Landing/20161217-041756 config: i386-randconfig-i1-201650 (attached as .config) compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): arch/x86/kernel/cpu/intel.c: In function 'probe_xeon_phi_r3mwait': >> arch/x86/kernel/cpu/intel.c:93:2: warning: passing argument 2 of 'set_bit' >> from incompatible pointer type [enabled by default] set_bit(HWCAP2_RING3MWAIT, &ELF_HWCAP2); ^ In file included from include/linux/bitops.h:36:0, from include/linux/kernel.h:10, from arch/x86/kernel/cpu/intel.c:1: arch/x86/include/asm/bitops.h:72:1: note: expected 'volatile long unsigned int *' but argument is of type 'unsigned int *' set_bit(long nr, volatile unsigned long *addr) ^ vim +/set_bit +93 arch/x86/kernel/cpu/intel.c 77 /* 78 * Ring 3 MONITOR/MWAIT feature cannot be detected without 79 * cpu model and family comparison. 80 */ 81 if (c->x86 != 6 || c->x86_model != INTEL_FAM6_XEON_PHI_KNL) 82 return; 83 84 if (ring3mwait_disabled) { 85 msr_clear_bit(MSR_MISC_FEATURE_ENABLES, 86 MSR_MISC_FEATURE_ENABLES_RING3MWAIT_BIT); 87 return; 88 } 89 90 msr_set_bit(MSR_MISC_FEATURE_ENABLES, 91 MSR_MISC_FEATURE_ENABLES_RING3MWAIT_BIT); 92 set_cpu_cap(c, X86_FEATURE_RING3MWAIT); > 93 set_bit(HWCAP2_RING3MWAIT, &ELF_HWCAP2); 94 } 95 96 static void early_init_intel(struct cpuinfo_x86 *c) 97 { 98 u64 misc_enable; 99 100 /* Unmask CPUID levels if masked: */ 101 if (c->x86 > 6 || (c->x86 == 6 && c->x86_model >= 0xd)) { --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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