arch/riscv/kvm/vcpu_exit.c:139:34: sparse: sparse: cast to restricted __le32

arch/riscv/kvm/vcpu_exit.c:139:34: sparse: sparse: cast to restricted __le32

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   66182ca873a4e87b3496eca79d57f86b76d7f52d
commit: 77ba6469fe1ed37a1f62bc76fb5a7b159f698aed RISC-V: KVM: Use ncsr_xyz() in kvm_riscv_vcpu_trap_redirect()
date:   10 months ago
config: riscv-randconfig-r113-20260515 (https://download.01.org/0day-ci/archive/20260515/202605151011.cLM0NT0p-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260515/202605151011.cLM0NT0p-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
| Fixes: 77ba6469fe1e ("RISC-V: KVM: Use ncsr_xyz() in kvm_riscv_vcpu_trap_redirect()")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605151011.cLM0NT0p-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   WARNING: invalid argument to '-march': '_zacas_zabha'
>> arch/riscv/kvm/vcpu_exit.c:139:34: sparse: sparse: cast to restricted __le32
>> arch/riscv/kvm/vcpu_exit.c:155:9: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long @@     got restricted __le32 [usertype] @@
   arch/riscv/kvm/vcpu_exit.c:155:9: sparse:     expected unsigned long
   arch/riscv/kvm/vcpu_exit.c:155:9: sparse:     got restricted __le32 [usertype]
   arch/riscv/kvm/vcpu_exit.c:158:9: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long @@     got restricted __le32 [usertype] @@
   arch/riscv/kvm/vcpu_exit.c:158:9: sparse:     expected unsigned long
   arch/riscv/kvm/vcpu_exit.c:158:9: sparse:     got restricted __le32 [usertype]
   arch/riscv/kvm/vcpu_exit.c:159:9: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long @@     got restricted __le32 [usertype] @@
   arch/riscv/kvm/vcpu_exit.c:159:9: sparse:     expected unsigned long
   arch/riscv/kvm/vcpu_exit.c:159:9: sparse:     got restricted __le32 [usertype]
   arch/riscv/kvm/vcpu_exit.c:160:9: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long @@     got restricted __le32 [usertype] @@
   arch/riscv/kvm/vcpu_exit.c:160:9: sparse:     expected unsigned long
   arch/riscv/kvm/vcpu_exit.c:160:9: sparse:     got restricted __le32 [usertype]
   arch/riscv/kvm/vcpu_exit.c:163:41: sparse: sparse: cast to restricted __le32

vim +139 arch/riscv/kvm/vcpu_exit.c

   129	
   130	/**
   131	 * kvm_riscv_vcpu_trap_redirect -- Redirect trap to Guest
   132	 *
   133	 * @vcpu: The VCPU pointer
   134	 * @trap: Trap details
   135	 */
   136	void kvm_riscv_vcpu_trap_redirect(struct kvm_vcpu *vcpu,
   137					  struct kvm_cpu_trap *trap)
   138	{
 > 139		unsigned long vsstatus = ncsr_read(CSR_VSSTATUS);
   140	
   141		/* Change Guest SSTATUS.SPP bit */
   142		vsstatus &= ~SR_SPP;
   143		if (vcpu->arch.guest_context.sstatus & SR_SPP)
   144			vsstatus |= SR_SPP;
   145	
   146		/* Change Guest SSTATUS.SPIE bit */
   147		vsstatus &= ~SR_SPIE;
   148		if (vsstatus & SR_SIE)
   149			vsstatus |= SR_SPIE;
   150	
   151		/* Clear Guest SSTATUS.SIE bit */
   152		vsstatus &= ~SR_SIE;
   153	
   154		/* Update Guest SSTATUS */
 > 155		ncsr_write(CSR_VSSTATUS, vsstatus);
   156	
   157		/* Update Guest SCAUSE, STVAL, and SEPC */
   158		ncsr_write(CSR_VSCAUSE, trap->scause);
   159		ncsr_write(CSR_VSTVAL, trap->stval);
   160		ncsr_write(CSR_VSEPC, trap->sepc);
   161	
   162		/* Set Guest PC to Guest exception vector */
   163		vcpu->arch.guest_context.sepc = ncsr_read(CSR_VSTVEC);
   164	
   165		/* Set Guest privilege mode to supervisor */
   166		vcpu->arch.guest_context.sstatus |= SR_SPP;
   167	}
   168	

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