Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [PATCH] security: Fix IMA Kconfig for dependencies on ARM64
From:   Mimi Zohar <zohar@linux.vnet.ibm.com>
To:     James Bottomley <James.Bottomley@HansenPartnership.com>,
        "Safford, David (GE Global Research, US)" <david.safford@ge.com>,
        Jiandi An <anjiandi@codeaurora.org>,
        Jason Gunthorpe <jgg@ziepe.ca>
Cc:     "dmitry.kasatkin@gmail.com" <dmitry.kasatkin@gmail.com>,
        "jmorris@namei.org" <jmorris@namei.org>,
        "serge@hallyn.com" <serge@hallyn.com>,
        "linux-integrity@vger.kernel.org" <linux-integrity@vger.kernel.org>,
        "linux-security-module@vger.kernel.org" 
        <linux-security-module@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Date:   Fri, 16 Mar 2018 12:51:46 -0400
In-Reply-To: <1521134981.5348.62.camel@HansenPartnership.com>
References: <1520400386-17674-1-git-send-email-anjiandi@codeaurora.org>
         <20180307185132.GA30102@ziepe.ca>
         <1520448953.10396.565.camel@linux.vnet.ibm.com>
         <1520449719.5558.28.camel@HansenPartnership.com>
         <1520450495.10396.587.camel@linux.vnet.ibm.com>
         <1520451662.24314.5.camel@HansenPartnership.com>
         <1520461156.10396.654.camel@linux.vnet.ibm.com>
         <191cfd49-0c66-a5ef-3d2b-b6c4132aa294@codeaurora.org>
         <1520615461.12216.6.camel@HansenPartnership.com>
         <1520891598.3547.190.camel@linux.vnet.ibm.com>
         <1520893847.4522.62.camel@HansenPartnership.com>
         <1520897400.3547.253.camel@linux.vnet.ibm.com>
         <1520899605.4522.67.camel@HansenPartnership.com>
         <BCA04D5D9A3B764C9B7405BBA4D4A3C002367FEF@ALPMBAPA12.e2k.ad.ge.com>
         <1521038471.4508.25.camel@HansenPartnership.com>
         <1521047286.3547.470.camel@linux.vnet.ibm.com>
         <1521048306.4508.56.camel@HansenPartnership.com>
         <1521130749.3547.608.camel@linux.vnet.ibm.com>
         <1521133728.5348.51.camel@HansenPartnership.com>
         <1521134074.3547.629.camel@linux.vnet.ibm.com>
         <1521134981.5348.62.camel@HansenPartnership.com>
Content-Type: text/plain; charset="UTF-8"
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
Message-Id: <1521219106.3503.54.camel@linux.vnet.ibm.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, 2018-03-15 at 10:29 -0700, James Bottomley wrote:
> On Thu, 2018-03-15 at 13:14 -0400, Mimi Zohar wrote:
> > On Thu, 2018-03-15 at 10:08 -0700, James Bottomley wrote:
> > > 
> > > On Thu, 2018-03-15 at 12:19 -0400, Mimi Zohar wrote:
> > 
> > > 
> > > > 
> > > > If EFI is extending the TPM, will the events be added to the TPM
> > > > event log or to the IMA measurement list?
> > > 
> > > I'm not proposing any changes to the tpm_pcr_extend API.  At the
> > > moment it does an extend without logging, so that's what it will do
> > > in the EFI driver case as well.  That means logging is still the
> > > responsibility of the caller.
> > 
> > Does EFI support extending multiple TPM banks?
> 
> The specs are here:
> 
> https://trustedcomputinggroup.org/tcg-efi-protocol-specification/
> 
> As I said, I'm not planning to change the tpm_pcr_.. API.  At the
> moment for a TPM2 we extend all banks in the tpm_pcr_extend() API, so
> that's what we'll continue to do ... including extending the sha256
> banks with the sha1 hash, which seems to be our current practice.

Thanks, what you're planning on doing is a lot clearer now.

Mimi