From: Hsin-Yi Wang <hsinyi@chromium.org>
To: linux-arm-kernel@lists.infradead.org,
"Theodore Y . Ts'o" <tytso@mit.edu>
Cc: Kate Stewart <kstewart@linuxfoundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Mukesh Ojha <mojha@codeaurora.org>,
Grzegorz Halat <ghalat@redhat.com>,
"H . Peter Anvin" <hpa@zytor.com>,
Guenter Roeck <groeck@chromium.org>,
Will Deacon <will@kernel.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Rob Herring <robh@kernel.org>,
Daniel Thompson <daniel.thompson@linaro.org>,
Anders Roxell <anders.roxell@linaro.org>,
Yury Norov <ynorov@marvell.com>, Marc Zyngier <maz@kernel.org>,
Russell King <linux@armlinux.org.uk>,
Aaro Koskinen <aaro.koskinen@nokia.com>,
Ingo Molnar <mingo@redhat.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
Waiman Long <longman@redhat.com>,
"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
Wei Li <liwei391@huawei.com>,
Alexey Dobriyan <adobriyan@gmail.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Len Brown <len.brown@intel.com>,
Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
Rik van Riel <riel@surriel.com>,
Stephen Boyd <swboyd@chromium.org>,
Shaokun Zhang <zhangshaokun@hisilicon.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Borislav Petkov <bp@alien8.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Marcelo Tosatti <mtosatti@redhat.com>,
linux-kernel@vger.kernel.org, Armijn Hemel <armijn@tjaldur.nl>,
Jiri Kosina <jkosina@suse.cz>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Andrew Morton <akpm@linux-foundation.org>,
Tim Chen <tim.c.chen@linux.intel.com>,
"David S . Miller" <davem@davemloft.net>
Subject: [PATCH v9 0/3] add support for rng-seed
Date: Thu, 22 Aug 2019 15:15:20 +0800 [thread overview]
Message-ID: <20190822071522.143986-1-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 | 10 ++++++++++
drivers/char/random.c | 15 +++++++++++++++
drivers/of/fdt.c | 14 ++++++++++++--
include/linux/random.h | 1 +
9 files changed, 66 insertions(+), 23 deletions(-)
--
Change from v8:
* Add a new interface add_bootloader_randomness
--
2.20.1
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next reply other threads:[~2019-08-22 7:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-22 7:15 Hsin-Yi Wang [this message]
2019-08-22 7:15 ` [PATCH v9 1/3] arm64: map FDT as RW for early_init_dt_scan() Hsin-Yi Wang
2019-08-22 7:15 ` [PATCH v9 2/3] fdt: add support for rng-seed Hsin-Yi Wang
2019-08-22 16:03 ` Theodore Y. Ts'o
2019-08-22 17:39 ` Stephen Boyd
2019-08-24 19:04 ` Kees Cook
2019-08-29 10:03 ` Hsin-Yi Wang
2019-08-29 15:45 ` Theodore Y. Ts'o
2019-08-29 16:25 ` Kees Cook
2019-08-29 16:22 ` Kees Cook
2019-08-22 7:15 ` [PATCH v9 3/3] arm64: kexec_file: add rng-seed support Hsin-Yi Wang
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