linux-kernel - Re: [PATCH 0/1] x86/kexec: UKI support

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Message-Id: <CVGFE6FRWFHR.DVG9NUQID4EA@suppilovahvero>
Date:   Tue, 12 Sep 2023 01:02:24 +0300
From:   "Jarkko Sakkinen" <jarkko@...nel.org>
To:     "Jan Hendrik Farr" <kernel@...rr.cc>,
        <linux-kernel@...r.kernel.org>
Cc:     <kexec@...ts.infradead.org>, <x86@...nel.org>,
        <tglx@...utronix.de>, <dhowells@...hat.com>, <vgoyal@...hat.com>,
        <keyrings@...r.kernel.org>, <akpm@...ux-foundation.org>,
        <bhe@...hat.com>, <bhelgaas@...gle.com>, <lennart@...ttering.net>,
        <bluca@...ian.org>, <systemd-devel@...ts.freedesktop.org>
Subject: Re: [PATCH 0/1] x86/kexec: UKI support

On Sat Sep 9, 2023 at 7:18 PM EEST, Jan Hendrik Farr wrote:
> Hello,
>
> this patch implements UKI support for kexec_file_load. It will require support
> in the kexec-tools userspace utility. For testing purposes the following can be used:
> https://github.com/Cydox/kexec-test/
>
> There has been discussion on this topic in an issue on GitHub that is linked below
> for reference.
>
>
> Some links:
> - Related discussion: https://github.com/systemd/systemd/issues/28538
> - Documentation of UKIs: https://uapi-group.org/specifications/specs/unified_kernel_image/
>
> Jan Hendrik Farr (1):
>   x86/kexec: UKI support
>
>  arch/x86/include/asm/kexec-uki.h       |   7 ++
>  arch/x86/include/asm/parse_pefile.h    |  32 +++++++
>  arch/x86/kernel/Makefile               |   2 +
>  arch/x86/kernel/kexec-uki.c            | 113 +++++++++++++++++++++++++
>  arch/x86/kernel/machine_kexec_64.c     |   2 +
>  arch/x86/kernel/parse_pefile.c         | 110 ++++++++++++++++++++++++
>  crypto/asymmetric_keys/mscode_parser.c |   2 +-
>  crypto/asymmetric_keys/verify_pefile.c | 110 +++---------------------
>  crypto/asymmetric_keys/verify_pefile.h |  16 ----
>  9 files changed, 278 insertions(+), 116 deletions(-)
>  create mode 100644 arch/x86/include/asm/kexec-uki.h
>  create mode 100644 arch/x86/include/asm/parse_pefile.h
>  create mode 100644 arch/x86/kernel/kexec-uki.c
>  create mode 100644 arch/x86/kernel/parse_pefile.c
>
> -- 
> 2.40.1

What the heck is UKI?

BR, Jarkko