linux-kernel - Re: [RFC] Support for Arm CCA VMs on Linux

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Message-ID: <CANW9uyud8RTkqgiL=64wV712QMxtAyubqeyCJ0vpcADJ42VqJA@mail.gmail.com>
Date:   Wed, 1 Mar 2023 08:35:05 +0900
From:   Itaru Kitayama <itaru.kitayama@...il.com>
To:     Jean-Philippe Brucker <jean-philippe@...aro.org>
Cc:     Suzuki K Poulose <suzuki.poulose@....com>,
        linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, kvmarm@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org,
        Alexandru Elisei <alexandru.elisei@....com>,
        Andrew Jones <andrew.jones@...ux.dev>,
        Catalin Marinas <catalin.marinas@....com>,
        Chao Peng <chao.p.peng@...ux.intel.com>,
        Christoffer Dall <christoffer.dall@....com>,
        Fuad Tabba <tabba@...gle.com>,
        James Morse <james.morse@....com>,
        Joey Gouly <Joey.Gouly@....com>, Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Quentin Perret <qperret@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Steven Price <steven.price@....com>,
        Thomas Huth <thuth@...hat.com>, Will Deacon <will@...nel.org>,
        Zenghui Yu <yuzenghui@...wei.com>, kvmarm@...ts.cs.columbia.edu
Subject: Re: [RFC] Support for Arm CCA VMs on Linux

On Sat, Jan 28, 2023 at 12:30 AM Jean-Philippe Brucker
<jean-philippe@...aro.org> wrote:
>
> On Fri, Jan 27, 2023 at 11:22:48AM +0000, Suzuki K Poulose wrote:
> > We are happy to announce the early RFC 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
> >    wherever possible with other Confidential Compute solutions.
>
> A prototype for launching Realm VMs with QEMU is available at:
> https://lore.kernel.org/qemu-devel/20230127150727.612594-1-jean-philippe@linaro.org/
>
> Thanks,
> Jean

Hi Jean,
I've tried your series in Real on CCA Host, but the KVM arch init
emits an Invalid argument error and terminates.
I configure it with the aarch64-softmmu target only and built, any
other steps I should worry?

Itaru.

>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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