linux-kernel - Re: [RFC PATCH v5 008/104] KVM: TDX: Add a function to initialize TDX module

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Message-ID: <b2a1b80f9f7779ddcfcda50ca3ce08df000b2f1b.camel@intel.com>
Date:   Thu, 31 Mar 2022 14:02:11 +1300
From:   Kai Huang <kai.huang@...el.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Isaku Yamahata <isaku.yamahata@...il.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, isaku.yamahata@...el.com,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jim Mattson <jmattson@...gle.com>, erdemaktas@...gle.com,
        Connor Kuehl <ckuehl@...hat.com>
Subject: Re: [RFC PATCH v5 008/104] KVM: TDX: Add a function to initialize
 TDX module


> > 
> > - VMXON on all pCPUs: The TDX module initialization requires to enable VMX
> > (VMXON) on all present pCPUs.  vmx_hardware_enable() which is called on creating
> > guest does it.  It naturally fits with the TDX module initialization at creating
> > first TD.  I wanted to avoid code to enable VMXON on loading the kvm_intel.ko.
> 
> That's a solvable problem, though making it work without exporting hardware_enable_all()
> could get messy.

Could you elaborate a little bit on how to resolve?

-- 
Thanks,
-Kai