linux-kernel - RE: [PATCH] [v2] x86/sgx: Allow enclaves to use Asynchrounous Exit Notification

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Message-ID: <BL1PR11MB59782DF6E7F3CD950FCA4319F7649@BL1PR11MB5978.namprd11.prod.outlook.com>
Date:   Thu, 11 Aug 2022 01:57:46 +0000
From:   "Huang, Kai" <kai.huang@...el.com>
To:     "jarkko@...nel.org" <jarkko@...nel.org>
CC:     "dave@...1.net" <dave@...1.net>,
        "haitao.huang@...ux.intel.com" <haitao.huang@...ux.intel.com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "Lutomirski, Andy" <luto@...nel.org>,
        "bp@...en8.de" <bp@...en8.de>, "x86@...nel.org" <x86@...nel.org>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>
Subject: RE: [PATCH] [v2] x86/sgx: Allow enclaves to use Asynchrounous Exit
 Notification

> On Wed, Aug 10, 2022 at 10:17:31AM +0000, Huang, Kai wrote:
> > On Tue, 2022-08-02 at 14:21 +1200, Kai Huang wrote:
> > > >
> > > > Tested-by: Haitao Huang <haitao.huang@...el.com>
> > > >
> > > > Thanks
> > > > Haitao
> > >
> > > Hi Haitao,
> > >
> > > Could you also help to test in a VM?
> > >
> > > You will also need below patch in order to use EDECCSSA in the guest:
> > >
> > > https://lore.kernel.org/lkml/20220727115442.464380-1-kai.huang@intel
> > > .com/
> > >
> > > When you create the VM, please use -cpu host.
> > >
> >
> > Hi Haitao,
> >
> > Do you have any update?
> >
> > If it's not easy for you to verify in VM, could you let me know how to
> > set up the testing machine so I can have a try?
> 
> I can give ack for this, given that it is so obvious:
> 
> Acked-by: Jarkko Sakkinen <jarkko@...nel.org>
> 
> Would give reviewed-by if there was ucode update available, and I could test
> this.
> 

I don't know whether there's ucode update available.  Maybe Haitao has more information.

I talked to Haitao and I'll try to verify this in a VM.

Thanks,
-Kai