From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Documentation <linux-doc@vger.kernel.org>,
Linux EFI <linux-efi@vger.kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Hugo Osvaldo Barrera <hugo@whynothugo.nl>
Subject: Re: [PATCH] x86/Documentation: explain LINUX_EFI_INITRD_MEDIA_GUID
Date: Thu, 11 Sep 2025 18:36:42 +0700 [thread overview]
Message-ID: <aMK0SnY9NMby4X_F@archie.me> (raw)
In-Reply-To: <CAMj1kXHCi1pr3XNzwe7b7EFBkPGjkppeNWNSvy4wU1VBHj9kfA@mail.gmail.com>
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On Thu, Sep 11, 2025 at 08:46:50AM +0200, Ard Biesheuvel wrote:
> On Wed, 10 Sept 2025 at 03:58, Bagas Sanjaya <bagasdotme@gmail.com> wrote:
> > +PE/COFF entry point
> > +===================
> > +
> > +When compiled with ``CONFIG_EFI_STUB=y``, the kernel can be executed as a
> > +regular PE/COFF binary. See Documentation/admin-guide/efi-stub.rst for
> > +implementation details.
> > +
> > +The stub loader can request the initrd via a UEFI protocol. For this to work,
> > +the firmware or bootloader needs to register a handle which implements the
>
> ... which carries implementations of the ``EFI_LOAD_FILE2`` protocol
> and the device path protocol exposing the
> ``LINUX_EFI_INITRD_MEDIA_GUID`` vendor media device path.
>
> > +``EFI_LOAD_FILE2`` protocol with the ``LINUX_EFI_INITRD_MEDIA_GUID`` device
> > +path. In this case, a kernel booting via the EFI stub will use the ``LoadFile``
> > +function on the registered handle to obtain a reference to the initrd.
> > +
>
> ... will invoke LoadFile2::LoadFile() method on the registered
> protocol to instruct the firmware to load the initrd into a memory
> location chosen by the kernel/EFI stub.
Thanks for the wording suggestions!
--
An old man doll... just what I always wanted! - Clara
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prev parent reply other threads:[~2025-09-11 11:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-10 1:57 [PATCH] x86/Documentation: explain LINUX_EFI_INITRD_MEDIA_GUID Bagas Sanjaya
2025-09-10 3:25 ` Randy Dunlap
2025-09-10 6:01 ` Bagas Sanjaya
2025-09-10 20:09 ` H. Peter Anvin
2025-09-11 6:35 ` Ard Biesheuvel
2025-09-11 6:46 ` Ard Biesheuvel
2025-09-11 11:22 ` Hugo Osvaldo Barrera
2025-09-11 11:50 ` Bagas Sanjaya
2025-09-11 12:16 ` Hugo Osvaldo Barrera
2025-09-11 21:22 ` Randy Dunlap
2025-09-11 12:49 ` Ard Biesheuvel
2025-09-11 14:07 ` Hugo Osvaldo Barrera
2025-09-11 17:06 ` Ard Biesheuvel
2025-09-11 11:36 ` Bagas Sanjaya [this message]
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