linux-kernel - Re: [PATCH v7 04/20] x86/virt/tdx: Add skeleton to initialize TDX on demand

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 for Android: free password hash cracker in your pocket

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

Message-ID: <57be851ef63335a6f3bed84609e4081d37bb8dfd.camel@intel.com>
Date:   Wed, 23 Nov 2022 01:12:46 +0000
From:   "Huang, Kai" <kai.huang@...el.com>
To:     "tglx@...utronix.de" <tglx@...utronix.de>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "Hansen, Dave" <dave.hansen@...el.com>
CC:     "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "Luck, Tony" <tony.luck@...el.com>,
        "bagasdotme@...il.com" <bagasdotme@...il.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "Yamahata, Isaku" <isaku.yamahata@...el.com>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "Shahar, Sagi" <sagis@...gle.com>,
        "imammedo@...hat.com" <imammedo@...hat.com>,
        "Gao, Chao" <chao.gao@...el.com>,
        "Brown, Len" <len.brown@...el.com>,
        "sathyanarayanan.kuppuswamy@...ux.intel.com" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "Huang, Ying" <ying.huang@...el.com>,
        "Williams, Dan J" <dan.j.williams@...el.com>
Subject: Re: [PATCH v7 04/20] x86/virt/tdx: Add skeleton to initialize TDX on
 demand

On Wed, 2022-11-23 at 00:30 +0000, Huang, Kai wrote:
> > 
> > Clearly that's nowhere spelled out in the documentation, but I don't
> > buy the 'architecturaly required' argument not at all. It's an
> > implementation detail of the TDX module.
> 
> Hi Thomas,
> 
> Thanks for review!
> 
> I agree on hardware level there shouldn't be such requirement (not 100% sure
> though), but I guess from kernel's perspective, "the implementation detail of
> the TDX module" is sort of "architectural requirement" -- at least Intel arch
> guys think so I guess.

Let me double check with the TDX module folks and figure out the root of the
requirement.

Thanks.