Messages in this thread Patch in this message | | | Date | Thu, 10 Oct 2013 15:24:22 -0700 | From | "tip-bot for K. Y. Srinivasan" <> | Subject | [tip:x86/hyperv] x86, hyperv: Correctly guard the local APIC calibration code |
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Commit-ID: 90ab9d5510932e146a9443bf5a591f95d5b5ada8 Gitweb: http://git.kernel.org/tip/90ab9d5510932e146a9443bf5a591f95d5b5ada8 Author: K. Y. Srinivasan <kys@microsoft.com> AuthorDate: Thu, 10 Oct 2013 15:30:24 -0700 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Thu, 10 Oct 2013 15:21:38 -0700
x86, hyperv: Correctly guard the local APIC calibration code
The code that gets the local APIC timer frequency from the hypervisor rather depends on there being a local APIC.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Link: http://lkml.kernel.org/r/1381444224-3303-1-git-send-email-kys@microsoft.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> --- arch/x86/kernel/cpu/mshyperv.c | 2 ++ 1 file changed, 2 insertions(+)
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);
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