On 02/04/20 17:39, Qian Cai wrote: > 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@xxxxxx> > --- > arch/x86/kvm/vmx/ops.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/x86/kvm/vmx/ops.h b/arch/x86/kvm/vmx/ops.h > index 09b0937d56b1..19717d0a1100 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); > Merged, thanks. Paolo