From: David Safford <safford@watson.ibm.com>
To: Eric Paris <eparis@parisplace.org>
Cc: Mimi Zohar <zohar@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, James Morris <jmorris@namei.org>,
Rajiv Andrade <srajiv@linux.vnet.ibm.com>,
Jean-Christophe Dubois <jcd@tribudubois.net>,
Mimi Zohar <zohar@us.ibm.com>, Stable Kernel <stable@kernel.org>
Subject: Re: [PATCH] ima: remove ACPI dependency
Date: Tue, 27 Oct 2009 11:59:06 -0400 [thread overview]
Message-ID: <1256659146.3028.29.camel@localhost.localdomain> (raw)
In-Reply-To: <7e0fb38c0910270658v153480fdt5ced717feca76c17@mail.gmail.com>
On Tue, 2009-10-27 at 09:58 -0400, Eric Paris wrote:
> On Mon, Oct 26, 2009 at 9:26 AM, Mimi Zohar <zohar@linux.vnet.ibm.com> wrote:
> > Remove ACPI dependency on systems without a TPM enabled.
>
> I'm confused why you need ACPI at all. The TPM code doesn't require
> ACPI (I wish it did but Alan Cox Nak'd that patch). I don't see acpi
> anywhere in the ima code. What's the problem we are solving? Why
> does IMA care about ACPI at all? And aren't you really just dropping
> the build requirement on TCG_TPM? Is that a great idea?
>
> -Eric
This is discussed in the LSM thread:
http://marc.info/?l=linux-security-module&m=125322062401677&w=2
Basically, if running on a system with a TPM, IMA wants the TPM
boot measurement log, which the TPM driver can only get through
ACPI. If the platform does not have a TPM, then IMA does not
need ACPI.
dave
next prev parent reply other threads:[~2009-10-27 15:59 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-26 13:26 [PATCH] tpm add default function definitions Mimi Zohar
2009-10-26 13:26 ` [PATCH] ima: remove ACPI dependency Mimi Zohar
2009-10-27 13:58 ` Eric Paris
2009-10-27 15:59 ` David Safford [this message]
2009-10-27 16:36 ` Eric Paris
2009-10-27 20:42 ` David Safford
2009-10-27 20:56 ` Eric Paris
2009-10-28 18:51 ` Rajiv Andrade
2009-10-26 14:06 ` [PATCH] tpm add default function definitions Rajiv Andrade
2009-10-27 14:08 ` Eric Paris
-- strict thread matches above, loose matches on Subject: below --
2010-05-04 22:16 [PATCH] ima: remove ACPI dependency Mimi Zohar
2010-05-05 0:01 ` James Morris
2010-05-14 14:39 ` Mimi Zohar
2010-05-16 23:23 ` James Morris
2009-10-20 20:12 Mimi Zohar
2009-10-25 18:17 ` Jean-Christophe Dubois
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