On Sat, Aug 08, 2020 at 11:35:54PM +0800, Jiaxun Yang wrote: > > > 在 2020/8/8 下午11:31, Greg KH 写道: > > On Sat, Aug 08, 2020 at 08:50:52PM +0800, Huacai Chen wrote: > > > Only Loongson64 platform has and needs loongson_regs.h, including it > > > unconditionally will cause build errors. > > > > > > Fixes: 7f2a83f1c2a941ebfee5 ("KVM: MIPS: Add CPUCFG emulation for Loongson-3") > > > Cc: stable@xxxxxxxxxxxxxxx > > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > > Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx> > > > --- > > > arch/mips/kvm/vz.c | 2 ++ > > > 1 file changed, 2 insertions(+) > > > > > > 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 :)