[PATCH 0/2][RFC] Introduce "efi_fake_mem_mirror" boot option

Taku Izumi
2015-08-20T17:15:02Z

UEFI spec 2.5 introduces new Memory Attribute Definition named
EFI_MEMORY_MORE_RELIABLE which indicates which memory ranges are
mirrored. Now linux kernel can recognize which memory ranges are mirrored
by handling EFI_MEMORY_MORE_RELIABLE attributes.
However testing this feature necesitates boxes with UEFI spec 2.5 complied
firmware.

This patchset introduces new boot option named "efi_fake_mem_mirror".
By specifying this parameter, you can mark specific memory as
mirrored memory. This is useful for debugging of Memory Address Range
Mirroring feature.

Taku Izumi (2):
efi: Add EFI_MEMORY_MORE_RELIABLE support to efi_md_typeattr_format()
x86, efi: Add "efi_fake_mem_mirror" boot option

Documentation/kernel-parameters.txt | 8 ++
arch/x86/include/asm/efi.h | 2 +
arch/x86/kernel/setup.c | 4 +-
arch/x86/platform/efi/efi.c | 2 +-
arch/x86/platform/efi/quirks.c | 169 ++++++++++++++++++++++++++++++++++++
drivers/firmware/efi/efi.c | 6 +-
6 files changed, 187 insertions(+), 4 deletions(-)

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1.8.3.1