[reinette:resctrl/controls_rfc_v2 88/88] arch/x86/kernel/cpu/resctrl/core.c:560:13: warning: 'mba_wrmsr_intel' defined but not used

[reinette:resctrl/controls_rfc_v2 88/88] arch/x86/kernel/cpu/resctrl/core.c:560:13: warning: 'mba_wrmsr_intel' defined but not used

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/reinette/linux.git resctrl/controls_rfc_v2
head:   fbed64f80515241bc6da124585328fd5047a4a13
commit: fbed64f80515241bc6da124585328fd5047a4a13 [88/88] x86/resctrl: SAMPLE: Emulated controls
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20260805/202608050006.kFBSkmWC-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/20260805/202608050006.kFBSkmWC-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608050006.kFBSkmWC-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/resctrl/core.c:560:13: warning: 'mba_wrmsr_intel' defined but not used [-Wunused-function]
     560 | static void mba_wrmsr_intel(struct msr_param *m)
         |             ^~~~~~~~~~~~~~~


vim +/mba_wrmsr_intel +560 arch/x86/kernel/cpu/resctrl/core.c

fbed64f8051524 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-08-03  559  
bd4955d4bc2182 arch/x86/kernel/cpu/resctrl/core.c Tony Luck       2024-03-08 @560  static void mba_wrmsr_intel(struct msr_param *m)
05b93417ce5b92 arch/x86/kernel/cpu/intel_rdt.c    Vikas Shivappa  2017-04-07  561  {
cae2bcb6a2c691 arch/x86/kernel/cpu/resctrl/core.c Tony Luck       2024-06-28  562  	struct rdt_hw_ctrl_domain *hw_dom = resctrl_to_arch_ctrl_dom(m->dom);
13548d0c5c4b65 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-05-28  563  	struct resctrl_hw_ctrl *hw_ctrl = resctrl_to_arch_ctrl(m->ctrl);
05b93417ce5b92 arch/x86/kernel/cpu/intel_rdt.c    Vikas Shivappa  2017-04-07  564  	unsigned int i;
05b93417ce5b92 arch/x86/kernel/cpu/intel_rdt.c    Vikas Shivappa  2017-04-07  565  
d4846284209b96 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-07-21  566  	if (!test_bit(RESCTRL_SCALAR_FLAG_LINEAR, m->ctrl->scalar.flags)) {
a1bcfaf0334053 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-04-07  567  		pr_warn_once("Non-linear bandwidth delay not supported\n");
a1bcfaf0334053 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-04-07  568  		return;
a1bcfaf0334053 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-04-07  569  	}
a1bcfaf0334053 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-04-07  570  
a1bcfaf0334053 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-04-07  571  	/* Program bandwidth percentage mapped to linear delay value. */
05b93417ce5b92 arch/x86/kernel/cpu/intel_rdt.c    Vikas Shivappa  2017-04-07  572  	for (i = m->low; i < m->high; i++)
13548d0c5c4b65 arch/x86/kernel/cpu/resctrl/core.c Reinette Chatre 2026-05-28  573  		wrmsrq(hw_ctrl->msr_base + i, MAX_MBA_BW - hw_dom->ctrl_val[i]);
05b93417ce5b92 arch/x86/kernel/cpu/intel_rdt.c    Vikas Shivappa  2017-04-07  574  }
05b93417ce5b92 arch/x86/kernel/cpu/intel_rdt.c    Vikas Shivappa  2017-04-07  575  

:::::: The code at line 560 was first introduced by commit
:::::: bd4955d4bc2182ccb660c9c30a4dd7f36feaf943 x86/resctrl: Simplify call convention for MSR update functions

:::::: TO: Tony Luck <tony.luck@intel.com>
:::::: CC: Borislav Petkov (AMD) <bp@alien8.de>

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https://github.com/intel/lkp-tests/wiki