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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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