KVM: x86: Rename reexecute_instruction()=>kvm_unprotect_and_retry_on_failure()

Rename reexecute_instruction() to kvm_unprotect_and_retry_on_failure() to
make the intent and purpose of the helper much more obvious.

No functional change intended.
Reviewed-by: Yuan Yao <yuan.yao@intel.com>
Link: https://lore.kernel.org/r/20240831001538.336683-20-seanjc@google.comSigned-off-by: Sean Christopherson <seanjc@google.com>

arch/x86/kvm/x86.c

@@ -8861,7 +8861,8 @@ static int handle_emulation_failure(struct kvm_vcpu *vcpu, int emulation_type)
 	return 1;
 }
 
-static bool reexecute_instruction(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
+static bool kvm_unprotect_and_retry_on_failure(struct kvm_vcpu *vcpu,
+					       gpa_t cr2_or_gpa,
 					       int emulation_type)
 {
 	if (!(emulation_type & EMULTYPE_ALLOW_RETRY_PF))
@@ -9129,7 +9130,7 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
 				kvm_queue_exception(vcpu, UD_VECTOR);
 				return 1;
 			}
-			if (reexecute_instruction(vcpu, cr2_or_gpa,
+			if (kvm_unprotect_and_retry_on_failure(vcpu, cr2_or_gpa,
 							       emulation_type))
 				return 1;
 
@@ -9216,7 +9217,8 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
 		return 1;
 
 	if (r == EMULATION_FAILED) {
-		if (reexecute_instruction(vcpu, cr2_or_gpa, emulation_type))
+		if (kvm_unprotect_and_retry_on_failure(vcpu, cr2_or_gpa,
+						       emulation_type))
 			return 1;
 
 		return handle_emulation_failure(vcpu, emulation_type);