From: Hsin-Yi Wang <hsinyi@chromium.org>
To: linux-arm-kernel@lists.infradead.org
Cc: Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Frank Rowand <frowand.list@gmail.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Rapoport <rppt@linux.ibm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Miles Chen <miles.chen@mediatek.com>,
Hsin-Yi Wang <hsinyi@chromium.org>,
James Morse <james.morse@arm.com>,
Andrew Murray <andrew.murray@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Jun Yao <yaojun8558363@gmail.com>, Yu Zhao <yuzhao@google.com>,
Robin Murphy <robin.murphy@arm.com>,
Laura Abbott <labbott@redhat.com>,
Stephen Boyd <swboyd@chromium.org>,
Kees Cook <keescook@chromium.org>
Subject: [PATCH v7 0/3] add support for rng-seed
Date: Wed, 3 Jul 2019 12:01:33 +0800 [thread overview]
Message-ID: <20190703040135.169843-1-hsinyi@chromium.org> (raw)
Introducing a chosen node, rng-seed, which is an entropy that can be
passed to kernel called very early to increase initial device
randomness. This can be used for adding sufficient initial entropy
for stack canary. Especially architectures that lack per-stack canary.
Hsin-Yi Wang (3):
arm64: map FDT as RW for early_init_dt_scan()
fdt: add support for rng-seed
arm64: kexec_file: add rng-seed support
arch/arm64/include/asm/mmu.h | 2 +-
arch/arm64/kernel/kaslr.c | 5 +----
arch/arm64/kernel/machine_kexec_file.c | 18 +++++++++++++++++-
arch/arm64/kernel/setup.c | 9 ++++++++-
arch/arm64/mm/mmu.c | 15 +--------------
drivers/of/fdt.c | 10 ++++++++++
6 files changed, 38 insertions(+), 21 deletions(-)
--
2.20.1
next reply other threads:[~2019-07-03 4:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 4:01 Hsin-Yi Wang [this message]
2019-07-03 4:01 ` [PATCH v7 1/3] arm64: map FDT as RW for early_init_dt_scan() Hsin-Yi Wang
2019-07-03 4:01 ` [PATCH v7 2/3] fdt: add support for rng-seed Hsin-Yi Wang
2019-07-03 4:01 ` [PATCH v7 3/3] arm64: kexec_file: add rng-seed support Hsin-Yi Wang
2019-08-05 16:34 ` [PATCH v7 0/3] add support for rng-seed Hsin-Yi Wang
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