From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Bottomley <James.Bottomley@HansenPartnership.com>
Subject: Re: Regression from efi: call get_event_log before ExitBootServices
Date: Fri, 09 Mar 2018 09:03:13 -0800
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To: Hans de Goede <hdegoede@redhat.com>, Jeremy Cline <jeremy@jcline.org>, Javier Martinez Canillas <javierm@redhat.com>, Thiebaud Weksteen <tweek@google.com>, Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>, linux-efi@vger.kernel.org, linux-integrity@vger.kernel.org, tpmdd-devel@lists.sourceforge.net, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Fri, 2018-03-09 at 10:29 +0100, Hans de Goede wrote:
> Hi,
> 
> On 08-03-18 18:26, Jeremy Cline wrote:
> > 
> > On 03/08/2018 11:50 AM, Hans de Goede wrote:
[...]
> > > > The UEFI firmware does some measurements and so does shim. So
> > > > you should have some event logs. What version of shim are you
> > > > using? And also would be good to know if it's the same shim
> > > > version that Jeremy is using.
> > > 
> > > That is a very good question, I'm using: shim-ia32-13-0.7.x86_64, 
> > > which is the last version for F27 AFAICT.
> > 
> > All my tablet has installed is shim-0.8-10.x86_64, no shim-ia32.
> 
> Yes my bad, although if the kernel changes break booting on systems
> without the shim that is still good to know and something which
> we probably ought to fix.

My laptop is set up with secure boot but without shim using a shim
protocol thin layer to check the kernel signature against db variables:

https://git.kernel.org/pub/scm/linux/kernel/git/jejb/efitools.git/tree/ShimReplace.c

and I haven't seen any breakage, so not having a shim that does
measurements works for me all the way up to -rc4.

James