On Sun, Aug 09, 2020 at 07:23:28PM +0200, Paolo Bonzini wrote: > On 09/08/20 09:02, Greg KH wrote: > >>>> diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c > >>>> index 3932f76..a474578 100644 > >>>> --- a/arch/mips/kvm/vz.c > >>>> +++ b/arch/mips/kvm/vz.c > >>>> @@ -29,7 +29,9 @@ > >>>> #include <linux/kvm_host.h> > >>>> #include "interrupt.h" > >>>> +#ifdef CONFIG_CPU_LOONGSON64 > >>>> #include "loongson_regs.h" > >>>> +#endif > >>> The fix for this should be in the .h file, no #ifdef should be needed in > >>> a .c file. > >> The header file can only be reached when CONFIG_CPU_LOONGSON64 is > >> selected... > >> Otherwise the include path of this file won't be a part of CFLAGS. > > That sounds like you should fix up the path of this file in the > > #include line as well :) > > > > There is more #ifdef CONFIG_CPU_LOONGSON64 in arch/mips/kvm/vz.c, and > more #include "loongson_regs.h" in arch/mips. So while I agree with > Greg that this idiom is quite unusual, it seems to be the expected way > to use this header. I queued the patch. Or you all could fix it up to work properly like all other #include lines in the kernel source tree. There's no reason mips should be "special" here, right? thanks, greg k-h