KVM: x86: Move "emulate hypercall" function declarations to x86.h

Move the declarations for the hypercall emulation APIs to x86.h.  While the
helpers are exported, they are intended to be consumed only by KVM vendor
modules, i.e. don't need to be exposed to the kernel at-large.

No functional change intended.

Signed-off-by: Sean Christopherson <[email protected]>
Reviewed-by: Binbin Wu <[email protected]>
Reviewed-by: Kai Huang <[email protected]>
Reviewed-by: Tom Lendacky <[email protected]>
Reviewed-by: Xiaoyao Li <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>

Author: sean-jc

arch/x86/include/asm/kvm_host.h

@@ -2181,12 +2181,6 @@ static inline void kvm_clear_apicv_inhibit(struct kvm *kvm,
 	kvm_set_or_clear_apicv_inhibit(kvm, reason, false);
 }
 
-unsigned long __kvm_emulate_hypercall(struct kvm_vcpu *vcpu, unsigned long nr,
-				      unsigned long a0, unsigned long a1,
-				      unsigned long a2, unsigned long a3,
-				      int op_64_bit, int cpl);
-int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
-
 int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, u64 error_code,
 		       void *insn, int insn_len);
 void kvm_mmu_print_sptes(struct kvm_vcpu *vcpu, gpa_t gpa, const char *msg);

arch/x86/kvm/x86.h

@@ -617,4 +617,10 @@ static inline bool user_exit_on_hypercall(struct kvm *kvm, unsigned long hc_nr)
 	return kvm->arch.hypercall_exit_enabled & BIT(hc_nr);
 }
 
+unsigned long __kvm_emulate_hypercall(struct kvm_vcpu *vcpu, unsigned long nr,
+				      unsigned long a0, unsigned long a1,
+				      unsigned long a2, unsigned long a3,
+				      int op_64_bit, int cpl);
+int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
+
 #endif