linux-kernel - [PATCH 1/1] X86: hypev: Correctly guard the local APIC calibration code.

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Message-Id: <1381444224-3303-1-git-send-email-kys@microsoft.com>
Date:	Thu, 10 Oct 2013 15:30:24 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	hpa@...or.com, linux-kernel@...r.kernel.org, mingo@...nel.org,
	tglx@...utronix.de, olaf@...fle.de, x86@...nel.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 1/1] X86: hypev: Correctly guard the local APIC calibration code.

Correctly guard the code that gets the local APIC timer frequency from the
hypervisor.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
 arch/x86/kernel/cpu/mshyperv.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 0a490ca..628ff50 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -80,6 +80,7 @@ static void __init ms_hyperv_init_platform(void)
 	printk(KERN_INFO "HyperV: features 0x%x, hints 0x%x\n",
 	       ms_hyperv.features, ms_hyperv.hints);
 
+#ifdef CONFIG_X86_LOCAL_APIC
 	if (ms_hyperv.features & HV_X64_MSR_APIC_FREQUENCY_AVAILABLE) {
 		/*
 		 * Get the APIC frequency.
@@ -99,6 +100,7 @@ static void __init ms_hyperv_init_platform(void)
 			legacy_pic = &null_legacy_pic;
 		}
 	}
+#endif
 
 	if (ms_hyperv.features & HV_X64_MSR_TIME_REF_COUNT_AVAILABLE)
 		clocksource_register_hz(&hyperv_cs, NSEC_PER_SEC/100);
-- 
1.7.4.1

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