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Date:	Thu, 6 Mar 2014 13:27:23 -0800 (PST)
From:	David Rientjes <>
To:	Matt Fleming <>
cc:, "H. Peter Anvin" <>,
	Borislav Petkov <>,
	Alan Cox <>,
	Matthew Garrett <>,, Matt Fleming <>
Subject: Re: [PATCH v2 00/13] EFI mixed mode

On Tue, 4 Mar 2014, Matt Fleming wrote:

> From: Matt Fleming <>
> This patch series enables booting a 64-bit kernel on 32-bit EFI
> firmware.
> Note that no boot loader changes should be necessary to take advantage
> of these patches, and if your bootloader of choice uses the EFI handover
> protocol (Syslinux, efilinux, Grub) you should automatically be able to
> boot a CONFIG_X86_64 kernel on 32-bit EFI by enabling CONFIG_EFI_MIXED.
> This series does not implement mixed mode support for the EFI boot stub,
> so it won't work with gummiboot or directly from the EFI shell.
> The full series is available on the 'mixed-mode' branch here,
>   git://

This was merged into tip#x86/efi-mixed and results in a build error, 
config attached:

arch/x86/boot/tools/build.c: In function 'update_pecoff_setup_and_reloc':
arch/x86/boot/tools/build.c:259:1: error: parameter name omitted
arch/x86/boot/tools/build.c: In function 'update_pecoff_text':
arch/x86/boot/tools/build.c:260:1: error: parameter name omitted
arch/x86/boot/tools/build.c:260:1: error: parameter name omitted
arch/x86/boot/tools/build.c: In function 'main':
arch/x86/boot/tools/build.c:380:2: warning: implicit declaration of function 'efi_stub_entry_update' [-Wimplicit-function-declaration]
arch/x86/boot/compressed/head_64.o: In function `efi64_config':
(.data+0x90): undefined reference to `efi_call6'
View attachment "config" of type "TEXT/PLAIN" (69132 bytes)

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