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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Ard Biesheuvel <ardb@kernel.org>,
	linux-efi <linux-efi@vger.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	Laszlo Ersek <lersek@redhat.com>,
	Leif Lindholm <leif@nuviainc.com>,
	Peter Jones <pjones@redhat.com>,
	Matthew Garrett <mjg59@google.com>,
	Alexander Graf <agraf@csgraf.de>,
	Ilias Apalodimas <ilias.apalodimas@linaro.org>,
	Daniel Kiper <daniel.kiper@oracle.com>
Subject: Re: [PATCH 2/2] efi/libstub: take noinitrd cmdline argument into account for devpath initrd
Date: Thu, 6 Feb 2020 23:44:04 +0000	[thread overview]
Message-ID: <CAKv+Gu8nfoz+5jXn_8Pdwp9Hs=jxvanwMmSYbu3otq=EPL41qw@mail.gmail.com> (raw)
In-Reply-To: <ea0b44d5-c9e4-943a-da81-8b4c8f1a371d@gmx.de>

On Thu, 6 Feb 2020 at 18:33, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
> On 2/6/20 3:03 PM, Ard Biesheuvel wrote:
> > One of the advantages of using what basically amounts to a callback
> > interface into the bootloader for loading the initrd is that it provides
> > a natural place for the bootloader or firmware to measure the initrd
> > contents while they are being passed to the kernel.
> >
> > Unfortunately, this is not a guarantee that the initrd will in fact be
> > loaded and its /init invoked by the kernel, since the command line may
> > contain the 'noinitrd' option, in which case the initrd is ignored, but
> > this will not be reflected in the PCR that covers the initrd measurement.
>
> Does PCR here refer to the TPM Platform Configuration Register?
>

Yes.

WARNING: multiple messages have this Message-ID
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: linux-efi <linux-efi@vger.kernel.org>,
	Alexander Graf <agraf@csgraf.de>,
	Daniel Kiper <daniel.kiper@oracle.com>,
	Ilias Apalodimas <ilias.apalodimas@linaro.org>,
	Matthew Garrett <mjg59@google.com>,
	Peter Jones <pjones@redhat.com>,
	Leif Lindholm <leif@nuviainc.com>,
	Laszlo Ersek <lersek@redhat.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 2/2] efi/libstub: take noinitrd cmdline argument into account for devpath initrd
Date: Thu, 6 Feb 2020 23:44:04 +0000	[thread overview]
Message-ID: <CAKv+Gu8nfoz+5jXn_8Pdwp9Hs=jxvanwMmSYbu3otq=EPL41qw@mail.gmail.com> (raw)
In-Reply-To: <ea0b44d5-c9e4-943a-da81-8b4c8f1a371d@gmx.de>

On Thu, 6 Feb 2020 at 18:33, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
> On 2/6/20 3:03 PM, Ard Biesheuvel wrote:
> > One of the advantages of using what basically amounts to a callback
> > interface into the bootloader for loading the initrd is that it provides
> > a natural place for the bootloader or firmware to measure the initrd
> > contents while they are being passed to the kernel.
> >
> > Unfortunately, this is not a guarantee that the initrd will in fact be
> > loaded and its /init invoked by the kernel, since the command line may
> > contain the 'noinitrd' option, in which case the initrd is ignored, but
> > this will not be reflected in the PCR that covers the initrd measurement.
>
> Does PCR here refer to the TPM Platform Configuration Register?
>

Yes.

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  reply	other threads:[~2020-02-06 23:44 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-06 14:03 [PATCH 0/2] arch-agnostic initrd loading method for EFI systems Ard Biesheuvel
2020-02-06 14:03 ` Ard Biesheuvel
2020-02-06 14:03 ` [PATCH 1/2] efi/libstub: add support for loading the initrd from a device path Ard Biesheuvel
2020-02-06 14:03   ` Ard Biesheuvel
2020-02-06 18:26   ` Heinrich Schuchardt
2020-02-06 18:26     ` Heinrich Schuchardt
2020-02-06 18:46     ` Ilias Apalodimas
2020-02-06 18:46       ` Ilias Apalodimas
2020-02-06 19:15       ` Heinrich Schuchardt
2020-02-06 19:15         ` Heinrich Schuchardt
2020-02-06 20:09         ` Ilias Apalodimas
2020-02-06 20:09           ` Ilias Apalodimas
2020-02-06 22:49           ` Heinrich Schuchardt
2020-02-06 22:49             ` Heinrich Schuchardt
2020-02-07  7:35             ` Ilias Apalodimas
2020-02-07  7:35               ` Ilias Apalodimas
2020-02-06 22:35     ` Ard Biesheuvel
2020-02-06 22:35       ` Ard Biesheuvel
2020-02-07  0:01       ` Heinrich Schuchardt
2020-02-07  0:01         ` Heinrich Schuchardt
2020-02-07  0:21         ` Ard Biesheuvel
2020-02-07  0:21           ` Ard Biesheuvel
2020-02-07  0:57           ` Heinrich Schuchardt
2020-02-07  0:57             ` Heinrich Schuchardt
2020-02-07  8:12             ` Ard Biesheuvel
2020-02-07  8:12               ` Ard Biesheuvel
2020-02-07 13:30               ` Heinrich Schuchardt
2020-02-07 13:30                 ` Heinrich Schuchardt
2020-02-07 13:58                 ` Ard Biesheuvel
2020-02-07 13:58                   ` Ard Biesheuvel
2020-02-07 14:18                   ` Alexander Graf
2020-02-07 14:18                     ` Alexander Graf
2020-02-07 15:30                     ` Ard Biesheuvel
2020-02-07 15:30                       ` Ard Biesheuvel
2020-02-07 15:35                     ` Heinrich Schuchardt
2020-02-07 15:35                       ` Heinrich Schuchardt
2020-02-07 11:09       ` Laszlo Ersek
2020-02-07 11:09         ` Laszlo Ersek
2020-02-07 11:03     ` Laszlo Ersek
2020-02-07 11:03       ` Laszlo Ersek
2020-02-07  9:48   ` Laszlo Ersek
2020-02-07  9:48     ` Laszlo Ersek
2020-02-07 12:36     ` Ard Biesheuvel
2020-02-07 12:36       ` Ard Biesheuvel
2020-02-10 14:26       ` Laszlo Ersek
2020-02-10 14:26         ` Laszlo Ersek
2020-02-09  6:39   ` Lukas Wunner
2020-02-09 11:35     ` Ard Biesheuvel
2020-02-09 11:35       ` Ard Biesheuvel
2020-02-06 14:03 ` [PATCH 2/2] efi/libstub: take noinitrd cmdline argument into account for devpath initrd Ard Biesheuvel
2020-02-06 14:03   ` Ard Biesheuvel
2020-02-06 18:33   ` Heinrich Schuchardt
2020-02-06 18:33     ` Heinrich Schuchardt
2020-02-06 23:44     ` Ard Biesheuvel [this message]
2020-02-06 23:44       ` Ard Biesheuvel
2020-02-12 16:01   ` Peter Jones
2020-02-12 16:01     ` Peter Jones
2020-02-07  9:09 ` [PATCH 0/2] arch-agnostic initrd loading method for EFI systems Laszlo Ersek
2020-02-07  9:09   ` Laszlo Ersek
2020-02-07  9:22   ` Laszlo Ersek
2020-02-07  9:22     ` Laszlo Ersek
2020-02-07 12:23     ` Ard Biesheuvel
2020-02-07 12:23       ` Ard Biesheuvel
2020-02-07 16:20       ` James Bottomley
2020-02-07 16:20         ` James Bottomley
2020-02-07 18:31         ` Ard Biesheuvel
2020-02-07 18:31           ` Ard Biesheuvel
2020-02-07 19:54           ` James Bottomley
2020-02-07 19:54             ` James Bottomley
2020-02-07 20:03             ` Ard Biesheuvel
2020-02-07 20:03               ` Ard Biesheuvel
2020-02-07 18:45 ` Arvind Sankar
2020-02-07 18:45   ` Arvind Sankar
2020-02-07 19:47   ` Ard Biesheuvel
2020-02-07 19:47     ` Ard Biesheuvel
2020-02-07 20:26     ` Arvind Sankar
2020-02-07 20:26       ` Arvind Sankar

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