[arm-platforms:kvm-arm64/ptrauth-fixes 29/29] arch/arm64/kvm/hyp/debug-sr.c:188:19: sparse: sparse: incorrect type in assignment (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/ptrauth-fixes
head:   393909d3365ca0d4400b444d18e4b8b00f09e84c
commit: 393909d3365ca0d4400b444d18e4b8b00f09e84c [29/29] KVM: arm64: Remove host_cpu_context member from vcpu structure
config: arm64-randconfig-s032-20200607 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-247-gcadbd124-dirty
        git checkout 393909d3365ca0d4400b444d18e4b8b00f09e84c
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=arm64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

quoted

arch/arm64/kvm/hyp/debug-sr.c:188:19: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct kvm_cpu_context *host_ctxt @@     got struct kvm_cpu_context [noderef] <asn:3> * @@
arch/arm64/kvm/hyp/debug-sr.c:188:19: sparse:     expected struct kvm_cpu_context *host_ctxt
arch/arm64/kvm/hyp/debug-sr.c:188:19: sparse:     got struct kvm_cpu_context [noderef] <asn:3> *

   arch/arm64/kvm/hyp/debug-sr.c:210:19: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct kvm_cpu_context *host_ctxt @@     got struct kvm_cpu_context [noderef] <asn:3> * @@
   arch/arm64/kvm/hyp/debug-sr.c:210:19: sparse:     expected struct kvm_cpu_context *host_ctxt
   arch/arm64/kvm/hyp/debug-sr.c:210:19: sparse:     got struct kvm_cpu_context [noderef] <asn:3> *
--

quoted

arch/arm64/kvm/hyp/switch.c:547:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct kvm_cpu_context *ctxt @@     got struct kvm_cpu_context [noderef] <asn:3> * @@
arch/arm64/kvm/hyp/switch.c:547:14: sparse:     expected struct kvm_cpu_context *ctxt
arch/arm64/kvm/hyp/switch.c:547:14: sparse:     got struct kvm_cpu_context [noderef] <asn:3> *
arch/arm64/kvm/hyp/switch.c:718:19: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct kvm_cpu_context *host_ctxt @@     got struct kvm_cpu_context [noderef] <asn:3> * @@
arch/arm64/kvm/hyp/switch.c:718:19: sparse:     expected struct kvm_cpu_context *host_ctxt

   arch/arm64/kvm/hyp/switch.c:718:19: sparse:     got struct kvm_cpu_context [noderef] <asn:3> *
   arch/arm64/kvm/hyp/switch.c:823:19: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct kvm_cpu_context *host_ctxt @@     got struct kvm_cpu_context [noderef] <asn:3> * @@
   arch/arm64/kvm/hyp/switch.c:823:19: sparse:     expected struct kvm_cpu_context *host_ctxt
   arch/arm64/kvm/hyp/switch.c:823:19: sparse:     got struct kvm_cpu_context [noderef] <asn:3> *
   arch/arm64/kvm/hyp/switch.c:656:13: sparse: sparse: dereference of noderef expression
   arch/arm64/kvm/hyp/switch.c:668:13: sparse: sparse: dereference of noderef expression

vim +188 arch/arm64/kvm/hyp/debug-sr.c

   170	
   171	void __hyp_text __debug_switch_to_guest(struct kvm_vcpu *vcpu)
   172	{
   173		struct kvm_cpu_context *host_ctxt;
   174		struct kvm_cpu_context *guest_ctxt;
   175		struct kvm_guest_debug_arch *host_dbg;
   176		struct kvm_guest_debug_arch *guest_dbg;
   177	
   178		/*
   179		 * Non-VHE: Disable and flush SPE data generation
   180		 * VHE: The vcpu can run, but it can't hide.
   181		 */
   182		if (!has_vhe())
   183			__debug_save_spe_nvhe(&vcpu->arch.host_debug_state.pmscr_el1);
   184	
   185		if (!(vcpu->arch.flags & KVM_ARM64_DEBUG_DIRTY))
   186			return;
   187	
 > 188		host_ctxt = &__hyp_this_cpu_ptr(kvm_host_data)->host_ctxt;
   189		guest_ctxt = &vcpu->arch.ctxt;
   190		host_dbg = &vcpu->arch.host_debug_state.regs;
   191		guest_dbg = kern_hyp_va(vcpu->arch.debug_ptr);
   192	
   193		__debug_save_state(vcpu, host_dbg, host_ctxt);
   194		__debug_restore_state(vcpu, guest_dbg, guest_ctxt);
   195	}
   196	

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