efi/libstub: Annotate firmware routines as __efiapi

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Annotate all the firmware routines (boot services, runtime services and
protocol methods) called in the boot context as __efiapi, and make
it expand to __attribute__((ms_abi)) on 64-bit x86. This allows us
to use the compiler to generate the calls into firmware that use the
MS calling convention instead of the SysV one.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/20191224151025.32482-13-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Ard Biesheuvel 2019-12-24 16:10:12 +01:00 • committed by Ingo Molnar

parent 960a8d0183

commit 8f24f8c2fc

4 changed files with 96 additions and 76 deletions

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11

arch/x86/Kconfig

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4

arch/x86/boot/compressed/eboot.h

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10

drivers/firmware/efi/libstub/random.c

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147

include/linux/efi.h

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