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Message-Id: <1486398275-3966-1-git-send-email-ard.biesheuvel@linaro.org>
Date: Mon, 6 Feb 2017 16:24:28 +0000
From: Ard Biesheuvel <ard.biesheuvel@...aro.org>
To: linux-arm-kernel@...ts.infradead.org,
will.deacon@....com,
catalin.marinas@....com,
mark.rutland@....com
Cc: labbott@...oraproject.org,
kernel-hardening@...ts.openwall.com,
leif.lindholm@...aro.org,
pjones@...hat.com,
Ard Biesheuvel <ard.biesheuvel@...aro.org>
Subject: [PATCH 0/7] arm64: efi: PE/COFF cleanup/hardening
This cleans up the PE/COFF EFI header, by taking some of Mark's patches
and use them to replace open coded constants with symbolic ones, and
remove incorrect values or unused sections.
Finally, it updates the section layout so that the kernel Image can be
mapped in a way that does not require setting RWX permissions anywhere.
Note that this is currently not a huge win, given that most current UEFI
implementations map all of RAM RWX by default, but this is finally gaining
some attention, and work is underway to make the PE/COFF loader in EDK2
adhere to the section permissions, which would also allow the RAM mapping
to default to non-executable. Work in progress nonetheless...
Ard Biesheuvel (5):
arm64: efi: move EFI header and related data to a separate .S file
arm64: efi: ensure that the PE/COFF header pointer appears at offset
0x3c
arm64: efi: remove pointless dummy .reloc section
arm64: efi: replace open coded constants with symbolic ones
arm64: efi: split Image code and data into separate PE/COFF sections
Mark Rutland (2):
include: pe.h: allow for use in assembly
include: pe.h: add some missing definitions
arch/arm64/kernel/efi-header.S | 178 ++++++++++++++++++++
arch/arm64/kernel/head.S | 176 +------------------
arch/arm64/kernel/vmlinux.lds.S | 5 +
include/linux/pe.h | 177 +++++++++----------
4 files changed, 280 insertions(+), 256 deletions(-)
create mode 100644 arch/arm64/kernel/efi-header.S
--
2.7.4
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