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x86/hyper-v: stash the max number of virtual/logical processor
Max virtual processor will be needed for 'extended' hypercalls supporting more than 64 vCPUs. While on it, unify on 'Hyper-V' in mshyperv.c as we currently have a mix, report acquired misc features as well. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -28,6 +28,8 @@ struct ms_hyperv_info {
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u32 features;
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u32 misc_features;
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u32 hints;
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u32 max_vp_index;
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u32 max_lp_index;
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};
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extern struct ms_hyperv_info ms_hyperv;
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@ -184,9 +184,15 @@ static void __init ms_hyperv_init_platform(void)
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ms_hyperv.misc_features = cpuid_edx(HYPERV_CPUID_FEATURES);
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ms_hyperv.hints = cpuid_eax(HYPERV_CPUID_ENLIGHTMENT_INFO);
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pr_info("HyperV: features 0x%x, hints 0x%x\n",
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pr_info("Hyper-V: features 0x%x, hints 0x%x\n",
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ms_hyperv.features, ms_hyperv.hints);
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ms_hyperv.max_vp_index = cpuid_eax(HVCPUID_IMPLEMENTATION_LIMITS);
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ms_hyperv.max_lp_index = cpuid_ebx(HVCPUID_IMPLEMENTATION_LIMITS);
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pr_debug("Hyper-V: max %u virtual processors, %u logical processors\n",
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ms_hyperv.max_vp_index, ms_hyperv.max_lp_index);
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/*
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* Extract host information.
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*/
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@ -219,7 +225,7 @@ static void __init ms_hyperv_init_platform(void)
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rdmsrl(HV_X64_MSR_APIC_FREQUENCY, hv_lapic_frequency);
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hv_lapic_frequency = div_u64(hv_lapic_frequency, HZ);
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lapic_timer_frequency = hv_lapic_frequency;
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pr_info("HyperV: LAPIC Timer Frequency: %#x\n",
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pr_info("Hyper-V: LAPIC Timer Frequency: %#x\n",
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lapic_timer_frequency);
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}
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@ -253,7 +259,7 @@ static void __init ms_hyperv_init_platform(void)
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}
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const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
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.name = "Microsoft HyperV",
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.name = "Microsoft Hyper-V",
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.detect = ms_hyperv_platform,
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.init_platform = ms_hyperv_init_platform,
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};
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