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* [arm-platforms:kvm-arm64/nv3 37/37] arch/arm64/kvm/sys_regs.c:222:32: warning: misleading indentation; statement is not part of the previous 'if'
@ 2026-06-16 17:35 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-06-16 17:35 UTC (permalink / raw)
  To: Marc Zyngier; +Cc: llvm, oe-kbuild-all, linux-arm-kernel

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv3
head:   aa9a6e84f564417704258a20210b95d18ebf5601
commit: aa9a6e84f564417704258a20210b95d18ebf5601 [37/37] WIP
config: arm64-randconfig-003 (https://download.01.org/0day-ci/archive/20260617/202606170158.W9YgYBN4-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260617/202606170158.W9YgYBN4-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/202606170158.W9YgYBN4-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/sys_regs.c:222:30: error: expected ';' after expression
     222 |                         loc->loc = SR_LOC_SPECIAL : SR_LOC_MEMORY;
         |                                                   ^
         |                                                   ;
>> arch/arm64/kvm/sys_regs.c:222:32: warning: misleading indentation; statement is not part of the previous 'if' [-Wmisleading-indentation]
     222 |                         loc->loc = SR_LOC_SPECIAL : SR_LOC_MEMORY;
         |                                                     ^
   arch/arm64/kvm/sys_regs.c:221:3: note: previous statement is here
     221 |                 if (is_hyp_ctxt(vcpu))
         |                 ^
>> arch/arm64/kvm/sys_regs.c:222:32: warning: expression result unused [-Wunused-value]
     222 |                         loc->loc = SR_LOC_SPECIAL : SR_LOC_MEMORY;
         |                                                     ^~~~~~~~~~~~~
   2 warnings and 1 error generated.


vim +/if +222 arch/arm64/kvm/sys_regs.c

   168	
   169	#define MAPPED_EL2_SYSREG(r, m, t)					\
   170		case r:	{							\
   171			locate_mapped_el2_register(vcpu, r, m, t, loc);		\
   172			break;							\
   173		}
   174	
   175	static void locate_register(const struct kvm_vcpu *vcpu, enum vcpu_sysreg reg,
   176				    struct sr_loc *loc)
   177	{
   178		if (!vcpu_get_flag(vcpu, SYSREGS_ON_CPU)) {
   179			loc->loc = SR_LOC_MEMORY;
   180			return;
   181		}
   182	
   183		switch (reg) {
   184			MAPPED_EL2_SYSREG(SCTLR_EL2,   SCTLR_EL1,
   185					  translate_sctlr_el2_to_sctlr_el1	     );
   186			MAPPED_EL2_SYSREG(TTBR0_EL2,   TTBR0_EL1,
   187					  translate_ttbr0_el2_to_ttbr0_el1	     );
   188			MAPPED_EL2_SYSREG(TTBR1_EL2,   TTBR1_EL1,   NULL	     );
   189			MAPPED_EL2_SYSREG(TCR_EL2,     TCR_EL1,
   190					  translate_tcr_el2_to_tcr_el1		     );
   191			MAPPED_EL2_SYSREG(VBAR_EL2,    VBAR_EL1,    NULL	     );
   192			MAPPED_EL2_SYSREG(AFSR0_EL2,   AFSR0_EL1,   NULL	     );
   193			MAPPED_EL2_SYSREG(AFSR1_EL2,   AFSR1_EL1,   NULL	     );
   194			MAPPED_EL2_SYSREG(ESR_EL2,     ESR_EL1,     NULL	     );
   195			MAPPED_EL2_SYSREG(FAR_EL2,     FAR_EL1,     NULL	     );
   196			MAPPED_EL2_SYSREG(MAIR_EL2,    MAIR_EL1,    NULL	     );
   197			MAPPED_EL2_SYSREG(TCR2_EL2,    TCR2_EL1,    NULL	     );
   198			MAPPED_EL2_SYSREG(PIR_EL2,     PIR_EL1,     NULL	     );
   199			MAPPED_EL2_SYSREG(PIRE0_EL2,   PIRE0_EL1,   NULL	     );
   200			MAPPED_EL2_SYSREG(POR_EL2,     POR_EL1,     NULL	     );
   201			MAPPED_EL2_SYSREG(AMAIR_EL2,   AMAIR_EL1,   NULL	     );
   202			MAPPED_EL2_SYSREG(ELR_EL2,     ELR_EL1,	    NULL	     );
   203			MAPPED_EL2_SYSREG(SPSR_EL2,    SPSR_EL1,    NULL	     );
   204			MAPPED_EL2_SYSREG(CONTEXTIDR_EL2, CONTEXTIDR_EL1, NULL	     );
   205			MAPPED_EL2_SYSREG(SCTLR2_EL2,  SCTLR2_EL1,  NULL	     );
   206		case CNTHCTL_EL2:
   207			/* CNTHCTL_EL2 is super special, unless we support NV2p1 */
   208			loc->loc = (is_hyp_ctxt(vcpu) && vcpu_el2_e2h_is_set(vcpu) ?
   209				    SR_LOC_SPECIAL : SR_LOC_MEMORY);
   210			break;
   211		case CPTR_EL2:
   212			/*
   213			 * CPTR_EL2 is just as special, and needs a certain amount
   214			 * of handholding. It always lives in memory, due to being
   215			 * heavily trapped thanks to CPACR_EL1.TCPAC being RES0.
   216			 * FEAT_NV2p1 fixes this.
   217			 */
   218			locate_mapped_el2_register(vcpu, CPTR_EL2, CPACR_EL1,
   219						   translate_cptr_el2_to_cpacr_el1,
   220						   loc);
   221			if (is_hyp_ctxt(vcpu))
 > 222				loc->loc = SR_LOC_SPECIAL : SR_LOC_MEMORY;
   223			break;
   224		default:
   225			loc->loc = locate_direct_register(vcpu, reg);
   226		}
   227	}
   228	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


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