| From: |
| Ali Saidi <alisaidi-AT-amazon.com> |
| To: |
| <linux-kernel-AT-vger.kernel.org>, <linux-arm-kernel-AT-lists.infradead.org>, <linux-crypto-AT-vger.kernel.org> |
| Subject: |
| [PATCH 0/3] Add support for Graviton TRNG |
| Date: |
| Tue, 4 Jun 2019 20:30:57 +0000 |
| Message-ID: |
| <20190604203100.15050-1-alisaidi@amazon.com> |
| Cc: |
| Catalin Marinas <catalin.marinas-AT-arm.com>, Will Deacon <will.deacon-AT-arm.com>, Matt Mackall <mpm-AT-selenic.com>, Herbert Xu <herbert-AT-gondor.apana.org.au>, Arnd Bergmann <arnd-AT-arndb.de>, "Greg Kroah-Hartman" <gregkh-AT-linuxfoundation.org>, Ali Saidi <alisaidi-AT-amazon.com>, Ron Rindjunsky <ronrindj-AT-amazon.com>, Benjamin Herrenschmidt <benh-AT-kernel.crashing.org>, David Woodhouse <dwmw-AT-amazon.co.uk> |
| Archive-link: |
| Article |
AWS Graviton based systems provide an Arm SMC call in the vendor defined
hypervisor region to read random numbers from a HW TRNG and return them to the
guest.
We've observed slower guest boot and especially reboot times due to lack of
entropy and providing access to a TRNG is meant to address this.
Ali Saidi (3):
arm/arm64: Add smccc hypervisor service identifiers
arm64: export acpi_psci_use_hvc
hwrng: Add support for AWS Graviton TRNG
MAINTAINERS | 6 ++
arch/arm64/kernel/acpi.c | 1 +
drivers/char/hw_random/Kconfig | 13 ++++
drivers/char/hw_random/Makefile | 1 +
drivers/char/hw_random/graviton-rng.c | 123 ++++++++++++++++++++++++++++++++++
include/linux/arm-smccc.h | 2 +
6 files changed, 146 insertions(+)
create mode 100644 drivers/char/hw_random/graviton-rng.c
--
2.15.3.AMZN
