From dd018597a074bcd1e5307d3b8e7863e05287bddf Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Sun, 25 Jun 2017 10:06:41 -0700 Subject: 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 Reviewed-by: Andy Shevchenko Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/mshyperv.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'arch/x86/kernel/cpu') diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 70e717fccdd6..b3bf024fc4e0 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -184,9 +184,15 @@ static void __init ms_hyperv_init_platform(void) ms_hyperv.misc_features = cpuid_edx(HYPERV_CPUID_FEATURES); ms_hyperv.hints = cpuid_eax(HYPERV_CPUID_ENLIGHTMENT_INFO); - pr_info("HyperV: features 0x%x, hints 0x%x\n", + pr_info("Hyper-V: features 0x%x, hints 0x%x\n", ms_hyperv.features, ms_hyperv.hints); + ms_hyperv.max_vp_index = cpuid_eax(HVCPUID_IMPLEMENTATION_LIMITS); + ms_hyperv.max_lp_index = cpuid_ebx(HVCPUID_IMPLEMENTATION_LIMITS); + + pr_debug("Hyper-V: max %u virtual processors, %u logical processors\n", + ms_hyperv.max_vp_index, ms_hyperv.max_lp_index); + /* * Extract host information. */ @@ -219,7 +225,7 @@ static void __init ms_hyperv_init_platform(void) rdmsrl(HV_X64_MSR_APIC_FREQUENCY, hv_lapic_frequency); hv_lapic_frequency = div_u64(hv_lapic_frequency, HZ); lapic_timer_frequency = hv_lapic_frequency; - pr_info("HyperV: LAPIC Timer Frequency: %#x\n", + pr_info("Hyper-V: LAPIC Timer Frequency: %#x\n", lapic_timer_frequency); } @@ -253,7 +259,7 @@ static void __init ms_hyperv_init_platform(void) } const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = { - .name = "Microsoft HyperV", + .name = "Microsoft Hyper-V", .detect = ms_hyperv_platform, .init_platform = ms_hyperv_init_platform, }; -- cgit v1.2.1