From: "Saidi, Ali" <alisaidi@amazon.com>
To: Will Deacon <will.deacon@arm.com>, Mark Rutland <mark.rutland@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Arnd Bergmann <arnd@arndb.de>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
Catalin Marinas <catalin.marinas@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Rindjunsky, Ron" <ronrindj@amazon.com>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
Matt Mackall <mpm@selenic.com>,
"Woodhouse, David" <dwmw@amazon.co.uk>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 0/3] Add support for Graviton TRNG
Date: Fri, 28 Jun 2019 18:05:10 +0000 [thread overview]
Message-ID: <3104F396-094F-454C-8308-BF651FAB99AB@amazon.com> (raw)
In-Reply-To: <7EC45708-38A1-4826-BC82-298EFAAE30B1@amazon.com>
On 6/7/19, 7:59 AM, " Ali Saidi" <alisaidi@amazon.com> wrote:
On 6/5/19, 7:20 AM, "Will Deacon" <will.deacon@arm.com> wrote:
On Tue, Jun 04, 2019 at 08:30:57PM +0000, Ali Saidi wrote:
> 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.
Curious, but why this over something like virtio-rng?
This interface allows us to provide the functionality from both EL2 and EL3 and support multiple different types of our instances which we unfortunately can't do with virt-io.
Will,
Any additional comments?
Mark,
Do you know when you'll have a chance to rebase arm64/smccc-cleanup?
Thanks,
Ali
next prev parent reply other threads:[~2019-06-28 18:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-04 20:30 [PATCH 0/3] Add support for Graviton TRNG Ali Saidi
2019-06-04 20:30 ` [PATCH 1/3] arm/arm64: Add smccc hypervisor service identifiers Ali Saidi
2019-06-04 20:30 ` [PATCH 2/3] arm64: export acpi_psci_use_hvc Ali Saidi
2019-06-05 9:40 ` Sudeep Holla
2019-06-05 10:38 ` Mark Rutland
2019-06-05 11:02 ` Sudeep Holla
2019-06-05 16:07 ` Saidi, Ali
2019-06-04 20:31 ` [PATCH 3/3] hwrng: Add support for AWS Graviton TRNG Ali Saidi
2019-06-05 12:20 ` [PATCH 0/3] Add support for " Will Deacon
2019-06-07 12:58 ` Saidi, Ali
2019-06-28 18:05 ` Saidi, Ali [this message]
2019-07-01 8:28 ` Will Deacon
2019-07-01 17:02 ` Will Deacon
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