[arm-platforms:kvm-arm64/ptrauth-fixes 29/29] arch/arm64/kvm/arm.c:343:19: warning: variable 'cpu_data' set but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/ptrauth-fixes
head:   e91fc83d942e7ce98dd54d7a4ee789c5c75d7c6d
commit: e91fc83d942e7ce98dd54d7a4ee789c5c75d7c6d [29/29] KVM: arm64: Remove host_cpu_context member from vcpu structure
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout e91fc83d942e7ce98dd54d7a4ee789c5c75d7c6d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

arch/arm64/kvm/arm.c:147:5: warning: no previous prototype for 'kvm_arch_create_vcpu_debugfs' [-Wmissing-prototypes]
147 | int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
|     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/arm.c: In function 'kvm_arch_vcpu_load':

quoted

arch/arm64/kvm/arm.c:343:19: warning: variable 'cpu_data' set but not used [-Wunused-but-set-variable]

343 |  kvm_host_data_t *cpu_data;
|                   ^~~~~~~~

vim +/cpu_data +343 arch/arm64/kvm/arm.c

d35268da66870d7 arch/arm/kvm/arm.c   Christoffer Dall 2015-08-25  339  
749cf76c5a363e1 arch/arm/kvm/arm.c   Christoffer Dall 2013-01-20  340  void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
749cf76c5a363e1 arch/arm/kvm/arm.c   Christoffer Dall 2013-01-20  341  {
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  342  	int *last_ran;
630a16854d2d28d virt/kvm/arm/arm.c   Andrew Murray    2019-04-09 @343  	kvm_host_data_t *cpu_data;
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  344  
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  345  	last_ran = this_cpu_ptr(vcpu->kvm->arch.last_vcpu_ran);
630a16854d2d28d virt/kvm/arm/arm.c   Andrew Murray    2019-04-09  346  	cpu_data = this_cpu_ptr(&kvm_host_data);
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  347  
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  348  	/*
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  349  	 * We might get preempted before the vCPU actually runs, but
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  350  	 * over-invalidation doesn't affect correctness.
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  351  	 */
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  352  	if (*last_ran != vcpu->vcpu_id) {
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  353  		kvm_call_hyp(__kvm_tlb_flush_local_vmid, vcpu);
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  354  		*last_ran = vcpu->vcpu_id;
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  355  	}
94d0e5980d6791b arch/arm/kvm/arm.c   Marc Zyngier     2016-10-18  356  
86ce85352f0da7e arch/arm/kvm/arm.c   Christoffer Dall 2013-01-20  357  	vcpu->cpu = cpu;
5b3e5e5bf230f56 arch/arm/kvm/arm.c   Christoffer Dall 2013-01-20  358  
328e56647944919 arch/arm/kvm/arm.c   Christoffer Dall 2016-03-24  359  	kvm_vgic_load(vcpu);
b103cc3f10c06fb virt/kvm/arm/arm.c   Christoffer Dall 2016-10-16  360  	kvm_timer_vcpu_load(vcpu);
bc192ceec37108b virt/kvm/arm/arm.c   Christoffer Dall 2017-10-10  361  	kvm_vcpu_load_sysregs(vcpu);
e6b673b741ea0d7 virt/kvm/arm/arm.c   Dave Martin      2018-04-06  362  	kvm_arch_vcpu_load_fp(vcpu);
435e53fb5e21ad1 virt/kvm/arm/arm.c   Andrew Murray    2019-04-09  363  	kvm_vcpu_pmu_restore_guest(vcpu);
8564d6372a7d8a6 virt/kvm/arm/arm.c   Steven Price     2019-10-21  364  	if (kvm_arm_is_pvtime_enabled(&vcpu->arch))
8564d6372a7d8a6 virt/kvm/arm/arm.c   Steven Price     2019-10-21  365  		kvm_make_request(KVM_REQ_RECORD_STEAL, vcpu);
de73708915adc1b virt/kvm/arm/arm.c   Marc Zyngier     2018-06-21  366  
de73708915adc1b virt/kvm/arm/arm.c   Marc Zyngier     2018-06-21  367  	if (single_task_running())
ef2e78ddadbb939 virt/kvm/arm/arm.c   Marc Zyngier     2019-11-07  368  		vcpu_clear_wfx_traps(vcpu);
de73708915adc1b virt/kvm/arm/arm.c   Marc Zyngier     2018-06-21  369  	else
ef2e78ddadbb939 virt/kvm/arm/arm.c   Marc Zyngier     2019-11-07  370  		vcpu_set_wfx_traps(vcpu);
384b40caa8afae4 virt/kvm/arm/arm.c   Mark Rutland     2019-04-23  371  
d5acf9e6f385461 arch/arm64/kvm/arm.c Marc Zyngier     2020-06-04  372  	if (vcpu_has_ptrauth(vcpu))
9c4793fc62aa38e arch/arm64/kvm/arm.c Marc Zyngier     2020-06-03  373  		vcpu_ptrauth_disable(vcpu);
9c4793fc62aa38e arch/arm64/kvm/arm.c Marc Zyngier     2020-06-03  374  }
749cf76c5a363e1 arch/arm/kvm/arm.c   Christoffer Dall 2013-01-20  375  

:::::: The code at line 343 was first introduced by commit
:::::: 630a16854d2d28d13e96ff27ab43cc5caa4609fc arm64: KVM: Encapsulate kvm_cpu_context in kvm_host_data

:::::: TO: Andrew Murray [off-list ref]
:::::: CC: Marc Zyngier [off-list ref]

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org