commit 514ccc194971d0649e4e7ec8a9b3a6e33561d7bf
author Qian Cai <cai@lca.pw> Thu Apr 02 11:39:55 2020 -0400
committer Paolo Bonzini <pbonzini@redhat.com> Thu Apr 02 15:17:45 2020 -0400
tree 1fb68fc07e70c65c7daaf047e8a27ce4be841fa5
parent 855c7e9b9c2c39fb8d108ac70d0eed530f80a2aa

x86/kvm: fix a missing-prototypes "vmread_error"

The commit 842f4be95899 ("KVM: VMX: Add a trampoline to fix VMREAD error
handling") removed the declaration of vmread_error() causes a W=1 build
failure with KVM_WERROR=y. Fix it by adding it back.

arch/x86/kvm/vmx/vmx.c:359:17: error: no previous prototype for 'vmread_error' [-Werror=missing-prototypes]
 asmlinkage void vmread_error(unsigned long field, bool fault)
                 ^~~~~~~~~~~~

Signed-off-by: Qian Cai <cai@lca.pw>
Message-Id: <20200402153955.1695-1-cai@lca.pw>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/vmx/ops.h

diff --git a/arch/x86/kvm/vmx/ops.h b/arch/x86/kvm/vmx/ops.h
index 09b0937..19717d0a 100644
--- a/arch/x86/kvm/vmx/ops.h
+++ b/arch/x86/kvm/vmx/ops.h
@@ -12,6 +12,7 @@
 
 #define __ex(x) __kvm_handle_fault_on_reboot(x)
 
+asmlinkage void vmread_error(unsigned long field, bool fault);
 __attribute__((regparm(0))) void vmread_error_trampoline(unsigned long field,
 							 bool fault);
 void vmwrite_error(unsigned long field, unsigned long value);