Re: [v2] Support for Arm CCA VMs on Linux - Jean-Philippe Brucker

From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: Steven Price <steven.price@arm.com>
Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	"Marc Zyngier" <maz@kernel.org>, "Will Deacon" <will@kernel.org>,
	"James Morse" <james.morse@arm.com>,
	"Oliver Upton" <oliver.upton@linux.dev>,
	"Suzuki K Poulose" <suzuki.poulose@arm.com>,
	"Zenghui Yu" <yuzenghui@huawei.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, "Joey Gouly" <joey.gouly@arm.com>,
	"Alexandru Elisei" <alexandru.elisei@arm.com>,
	"Christoffer Dall" <christoffer.dall@arm.com>,
	"Fuad Tabba" <tabba@google.com>,
	linux-coco@lists.linux.dev,
	"Ganapatrao Kulkarni" <gankulkarni@os.amperecomputing.com>,
	"Mathieu Poirier" <mathieu.poirier@linaro.org>,
	"Thomas Fossati" <thomas.fossati@linaro.org>,
	"Kevin Zhao" <kevin.zhao@linaro.org>,
	"Leonardo Augusto Guimarães Garcia" <leonardo.garcia@linaro.org>
Subject: Re: [v2] Support for Arm CCA VMs on Linux
Date: Fri, 12 Apr 2024 17:52:24 +0100	[thread overview]
Message-ID: <20240412165224.GA357251@myrica> (raw)
In-Reply-To: <20240412084056.1733704-1-steven.price@arm.com>

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


>