From: Hsin-Yi Wang <hsinyi@chromium.org>
To: linux-arm-kernel@lists.infradead.org,
"Theodore Y . Ts'o" <tytso@mit.edu>
Cc: Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
Kate Stewart <kstewart@linuxfoundation.org>,
"David S . Miller" <davem@davemloft.net>,
Viresh Kumar <viresh.kumar@linaro.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Arnd Bergmann <arnd@arndb.de>, Marc Zyngier <maz@kernel.org>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Wei Li <liwei391@huawei.com>,
Anders Roxell <anders.roxell@linaro.org>,
Rob Herring <robh@kernel.org>,
Aaro Koskinen <aaro.koskinen@nokia.com>,
Daniel Thompson <daniel.thompson@linaro.org>,
Tim Chen <tim.c.chen@linux.intel.com>,
Rik van Riel <riel@surriel.com>, Waiman Long <longman@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Armijn Hemel <armijn@tjaldur.nl>,
Grzegorz Halat <ghalat@redhat.com>,
Len Brown <len.brown@intel.com>,
Shaokun Zhang <zhangshaokun@hisilicon.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Kees Cook <keescook@chromium.org>,
Stephen Boyd <swboyd@chromium.org>,
Guenter Roeck <groeck@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Alexey Dobriyan <adobriyan@gmail.com>,
Yury Norov <ynorov@marvell.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Jiri Kosina <jkosina@suse.cz>, Mukesh Ojha <mojha@codeaurora.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH v10 0/3] add support for rng-seed
Date: Fri, 23 Aug 2019 14:24:49 +0800 [thread overview]
Message-ID: <20190823062452.127528-1-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/char/Kconfig | 9 +++++++++
drivers/char/random.c | 14 ++++++++++++++
drivers/of/fdt.c | 14 ++++++++++++--
include/linux/random.h | 1 +
9 files changed, 64 insertions(+), 23 deletions(-)
--
2.20.1
next reply other threads:[~2019-08-23 6:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 6:24 Hsin-Yi Wang [this message]
2019-08-23 6:24 ` [PATCH v10 1/3] arm64: map FDT as RW for early_init_dt_scan() Hsin-Yi Wang
2019-08-23 6:24 ` [PATCH v10 2/3] fdt: add support for rng-seed Hsin-Yi Wang
2019-08-23 15:41 ` Will Deacon
2019-08-23 16:06 ` Theodore Y. Ts'o
2019-08-23 16:31 ` Will Deacon
2019-08-23 6:24 ` [PATCH v10 3/3] arm64: kexec_file: add rng-seed support Hsin-Yi Wang
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