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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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      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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