From: "Daniel P. Smith" <dpsmith@apertussolutions.com>
To: The development of GNU GRUB <grub-devel@gnu.org>,
Brendan Trotter <btrotter@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Daniel Kiper <daniel.kiper@oracle.com>,
Alec Brown <alec.r.brown@oracle.com>,
Kanth Ghatraju <kanth.ghatraju@oracle.com>,
Ross Philipson <ross.philipson@oracle.com>,
"piotr.krol@3mdeb.com" <piotr.krol@3mdeb.com>,
"krystian.hebel@3mdeb.com" <krystian.hebel@3mdeb.com>,
"persaur@gmail.com" <persaur@gmail.com>,
"Yoder, Stuart" <stuart.yoder@arm.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
"michal.zygowski@3mdeb.com" <michal.zygowski@3mdeb.com>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
"lukasz@hawrylko.pl" <lukasz@hawrylko.pl>,
linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
James Morris <jmorris@namei.org>
Subject: Re: Linux DRTM on UEFI platforms
Date: Thu, 7 Jul 2022 05:46:40 -0400 [thread overview]
Message-ID: <b1e7b545-8e66-5dc0-ff5a-9f69d1751a5f@apertussolutions.com> (raw)
In-Reply-To: <CAELHeEfZ-feZnexp7Gx3VAJPerENcoO1Uccbe3xxUX95jvLUdA@mail.gmail.com>
On 7/5/22 20:03, Brendan Trotter wrote:
> Hi,
Greetings!
Not sure why I got dropped from distro, but no worries.
> On Wed, Jul 6, 2022 at 4:52 AM Daniel P. Smith
> <dpsmith@apertussolutions.com> wrote:
>> On 6/10/22 12:40, Ard Biesheuvel wrote:> On Thu, 19 May 2022 at 22:59,
>> To help provide clarity, consider the following flows for comparison,
>>
>> Normal/existing efi-stub:
>> EFI -> efi-stub -> head_64.S
>>
>> Proposed secure launch:
>> EFI -> efi-stub -> dl-handler -> [cpu] -> sl_stub ->head_64.S
>
> For more clarity; the entire point is to ensure that the kernel only
> has to trust itself and the CPU/TPM hardware (and does not have to
> trust a potentially malicious boot loader)..Any attempt to avoid a
> one-off solution for Linux is an attempt to weaken security.
Please elaborate so I might understand how this entrypoint allows for
the kernel to only trust itself and the CPU/TPM.
> The only correct approach is "efi-stub -> head_64.S -> kernel's own
> secure init"; where (on UEFI systems) neither GRUB nor Trenchboot has
> a valid reason to exist and should never be installed.
>
>
> Cheers,
>
> Brendan
v/r,
dps
next prev parent reply other threads:[~2022-07-07 9:48 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-29 17:40 Linux DRTM on UEFI platforms Matthew Garrett
2022-03-30 7:02 ` Ard Biesheuvel
2022-03-30 7:11 ` Matthew Garrett
2022-03-30 7:12 ` Ard Biesheuvel
2022-03-30 7:18 ` Matthew Garrett
2022-03-30 7:23 ` Ard Biesheuvel
2022-03-30 7:27 ` Matthew Garrett
2022-03-30 7:39 ` Ard Biesheuvel
2022-03-30 12:46 ` James Bottomley
2022-03-31 0:35 ` Daniel P. Smith
2022-03-31 7:13 ` Ard Biesheuvel
2022-03-31 10:59 ` Heinrich Schuchardt
2022-05-19 20:57 ` Daniel P. Smith
2022-05-19 20:57 ` Daniel P. Smith
2022-06-10 16:40 ` Ard Biesheuvel
2022-07-05 18:35 ` Daniel P. Smith
2022-07-06 0:03 ` Brendan Trotter
2022-07-06 0:12 ` Matthew Garrett
2022-07-07 9:46 ` Daniel P. Smith [this message]
2022-07-08 3:36 ` Brendan Trotter
2022-07-08 4:56 ` Matthew Garrett
2022-07-22 17:23 ` Daniel P. Smith
2022-07-23 5:15 ` Brendan Trotter
2022-08-09 10:53 ` Daniel P. Smith
2022-08-10 9:07 ` Brendan Trotter
2022-08-10 17:46 ` Matthew Garrett
2022-08-11 9:55 ` Brendan Trotter
2022-08-11 11:34 ` Daniel Kiper
2022-08-11 18:25 ` Matthew Garrett
2022-08-12 3:22 ` Brendan Trotter
2022-08-12 5:54 ` Matthew Garrett
2022-08-05 12:53 ` Ard Biesheuvel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=b1e7b545-8e66-5dc0-ff5a-9f69d1751a5f@apertussolutions.com \
--to=dpsmith@apertussolutions.com \
--cc=James.Bottomley@hansenpartnership.com \
--cc=alec.r.brown@oracle.com \
--cc=andrew.cooper3@citrix.com \
--cc=ardb@kernel.org \
--cc=btrotter@gmail.com \
--cc=daniel.kiper@oracle.com \
--cc=grub-devel@gnu.org \
--cc=jmorris@namei.org \
--cc=kanth.ghatraju@oracle.com \
--cc=krystian.hebel@3mdeb.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lukasz@hawrylko.pl \
--cc=michal.zygowski@3mdeb.com \
--cc=mjg59@srcf.ucam.org \
--cc=persaur@gmail.com \
--cc=piotr.krol@3mdeb.com \
--cc=ross.philipson@oracle.com \
--cc=stuart.yoder@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.