> -----Original Message----- > From: H. Peter Anvin [mailto:hpa@xxxxxxxxx] > Sent: Tuesday, February 12, 2013 10:46 PM > To: KY Srinivasan > Cc: Yinghai Lu; mingo@xxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > tglx@xxxxxxxxxxxxx; hpa@xxxxxxxxxxxxxxx; linux-tip-commits@xxxxxxxxxxxxxxx > Subject: Re: [tip:x86/hyperv] X86: Handle Hyper-V vmbus interrupts as special > hypervisor interrupts > > On 02/12/2013 07:32 PM, KY Srinivasan wrote: > >>> > >>> +#if IS_ENABLED(CONFIG_HYPERV) > >>> +apicinterrupt HYPERVISOR_CALLBACK_VECTOR \ > >>> + hyperv_callback_vector hyperv_vector_handler > >>> +#endif /* CONFIG_HYPERV */ > >>> + > >> > >> so #ifdef CONFIG_HYPERV does not work here? > > > > The issue was that you could turn on CONFIG_HYPERV without enabling > > CONFIG_X86_LOCAL_APIC. Peter fixed it. > > > > He is asking why you are using IS_ENABLED() instead of #ifdef. The > difference is that IS_ENABLED() works even for modules. My mistake! K. Y > > -hpa > > -- > H. Peter Anvin, Intel Open Source Technology Center > I work for Intel. I don't speak on their behalf. > > ��.n��������+%������w��{.n�����{��ة��)��jg��������ݢj����G�������j:+v���w�m������w�������h�����٥