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Message-ID: <20240412165224.GA357251@myrica>
Date: Fri, 12 Apr 2024 17:52:24 +0100
From: Jean-Philippe Brucker <jean-philippe@...aro.org>
To: Steven Price <steven.price@....com>
Cc: kvm@...r.kernel.org, kvmarm@...ts.linux.dev,
Catalin Marinas <catalin.marinas@....com>,
Marc Zyngier <maz@...nel.org>, Will Deacon <will@...nel.org>,
James Morse <james.morse@....com>,
Oliver Upton <oliver.upton@...ux.dev>,
Suzuki K Poulose <suzuki.poulose@....com>,
Zenghui Yu <yuzenghui@...wei.com>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Joey Gouly <joey.gouly@....com>,
Alexandru Elisei <alexandru.elisei@....com>,
Christoffer Dall <christoffer.dall@....com>,
Fuad Tabba <tabba@...gle.com>, linux-coco@...ts.linux.dev,
Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Thomas Fossati <thomas.fossati@...aro.org>,
Kevin Zhao <kevin.zhao@...aro.org>,
Leonardo Augusto GuimarĂ£es Garcia <leonardo.garcia@...aro.org>
Subject: Re: [v2] Support for Arm CCA VMs on Linux
On Fri, Apr 12, 2024 at 09:40:56AM +0100, Steven Price wrote:
> We are happy to announce the second version of the Arm Confidential
> Compute Architecture (CCA) support for the Linux stack. The intention is
> to seek early feedback in the following areas:
> * KVM integration of the Arm CCA;
> * KVM UABI for managing the Realms, seeking to generalise the
> operations where possible with other Confidential Compute solutions;
> * Linux Guest support for Realms.
>
> See the previous RFC[1] for a more detailed overview of Arm's CCA
> solution, or visible the Arm CCA Landing page[2].
>
> This series is based on the final RMM v1.0 (EAC5) specification[3].
Instructions for building and running the CCA stack on QEMU, both as
system emulation and VMM, are available here:
https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/Building+an+RME+stack+for+QEMU
I'll send out the QEMU VMM patches shortly:
https://git.codelinaro.org/linaro/dcap/qemu.git branch cca/v2
Thanks,
Jean
> [1] Previous RFC
> https://lore.kernel.org/r/20230127112248.136810-1-suzuki.poulose%40arm.com
> [2] Arm CCA Landing page (See Key Resources section for various documentation)
> https://www.arm.com/architecture/security-features/arm-confidential-compute-architecture
> [3] RMM v1.0-EAC5 specification
> https://developer.arm.com/documentation/den0137/1-0eac5/
> [4] Shrinkwrap
> https://git.gitlab.arm.com/tooling/shrinkwrap
> [5] Linux support for Arm CCA RMM v1.0-EAC5
> https://lore.kernel.org/r/fb259449-026e-4083-a02b-f8a4ebea1f87%40arm.com
>
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