Messages in this thread | | | Date | Wed, 7 Apr 2021 22:48:44 +0000 | From | Sean Christopherson <> | Subject | Re: [PATCH 1/7] hyperv: Detect Nested virtualization support for SVM |
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On Wed, Apr 07, 2021, Michael Kelley wrote: > From: Vineeth Pillai <viremana@linux.microsoft.com> Sent: Wednesday, April 7, 2021 7:41 AM > > > > Detect nested features exposed by Hyper-V if SVM is enabled. > > > > Signed-off-by: Vineeth Pillai <viremana@linux.microsoft.com> > > --- > > arch/x86/kernel/cpu/mshyperv.c | 10 +++++++++- > > 1 file changed, 9 insertions(+), 1 deletion(-) > > > > diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c > > index 3546d3e21787..4d364acfe95d 100644 > > --- a/arch/x86/kernel/cpu/mshyperv.c > > +++ b/arch/x86/kernel/cpu/mshyperv.c > > @@ -325,9 +325,17 @@ static void __init ms_hyperv_init_platform(void) > > ms_hyperv.isolation_config_a, ms_hyperv.isolation_config_b); > > } > > > > - if (ms_hyperv.hints & HV_X64_ENLIGHTENED_VMCS_RECOMMENDED) { > > + /* > > + * AMD does not need enlightened VMCS as VMCB is already a > > + * datastructure in memory. We need to get the nested > > + * features if SVM is enabled. > > + */ > > + if (boot_cpu_has(X86_FEATURE_SVM) || > > + ms_hyperv.hints & HV_X64_ENLIGHTENED_VMCS_RECOMMENDED) { > > ms_hyperv.nested_features = > > cpuid_eax(HYPERV_CPUID_NESTED_FEATURES); > > + pr_info("Hyper-V nested_features: 0x%x\n", > > Nit: Most other similar lines put the colon in a different place: > > pr_info("Hyper-V: nested features 0x%x\n", > > One of these days, I'm going to fix the ones that don't follow this > pattern. :-)
Any reason not to use pr_fmt?
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