From: Hsin-Yi Wang <hsinyi@chromium.org>
To: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, Yu Zhao <yuzhao@google.com>,
Kees Cook <keescook@chromium.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Stephen Boyd <swboyd@chromium.org>,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>,
Jun Yao <yaojun8558363@gmail.com>,
Miles Chen <miles.chen@mediatek.com>,
Rob Herring <robh+dt@kernel.org>,
James Morse <james.morse@arm.com>,
Hsin-Yi Wang <hsinyi@chromium.org>,
Andrew Murray <andrew.murray@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Laura Abbott <labbott@redhat.com>,
Frank Rowand <frowand.list@gmail.com>,
Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH RESEND v7 0/3] add support for rng-seed
Date: Fri, 9 Aug 2019 01:38:01 +0800 [thread overview]
Message-ID: <20190808173803.1146-1-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
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next reply other threads:[~2019-08-08 17:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 17:38 Hsin-Yi Wang [this message]
2019-08-08 17:38 ` [PATCH RESEND v7 1/3] arm64: map FDT as RW for early_init_dt_scan() Hsin-Yi Wang
2019-08-08 17:38 ` [PATCH RESEND v7 2/3] fdt: add support for rng-seed Hsin-Yi Wang
2019-08-08 17:38 ` [PATCH RESEND v7 3/3] arm64: kexec_file: add rng-seed support Hsin-Yi Wang
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