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Date: Tue, 12 Feb 2013 19:46:12 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: KY Srinivasan <kys@...rosoft.com> CC: Yinghai Lu <yinghai@...nel.org>, "mingo@...nel.org" <mingo@...nel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "tglx@...utronix.de" <tglx@...utronix.de>, "hpa@...ux.intel.com" <hpa@...ux.intel.com>, "linux-tip-commits@...r.kernel.org" <linux-tip-commits@...r.kernel.org> 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. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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