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

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Date:   Mon, 17 Jul 2023 10:40:51 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc:     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>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        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 14/07/2023 17:28, Jonathan Cameron wrote:
> On Fri, 14 Jul 2023 16:03:37 +0100
> Suzuki K Poulose <suzuki.poulose@....com> wrote:
> 
>> Hi Jonathan
>>
>> On 14/07/2023 14:46, Jonathan Cameron wrote:
>>> On Fri, 27 Jan 2023 11:22:48 +0000
>>> Suzuki K Poulose <suzuki.poulose@....com> wrote:
>>>
>>>
>>> Hi Suzuki,
>>>
>>> Looking at this has been on the backlog for a while from our side and we are finally
>>> getting to it.  So before we dive in and given it's been 6 months, I wanted to check
>>> if you expect to post a new version shortly or if there is a rebased tree available?
>>
>> Thanks for your interest. We have been updating our trees to the latest
>> RMM specification (v1.0-eac2 now) and also rebasing Linux/KVM on top of
>> v6.5-rc1. We will post this as soon as we have all the components ready
>> (and the TF-RMM). At the earliest, this would be around early September.
>>
>> That said, the revised version will have the following changes :
>>    - Changes to the Stage2 management
>>    - Changes to RMM memory management for Realm
>>    - PMU/SVE support
>>
>> Otherwise, most of the changes remain the same (e.g., UABI). Happy to
>> hear feedback on those areas.
> 
> Hi Suzuki,
> 
> Thanks for the update.  If there is any chance of visibility of changes
> via a git tree etc that would be great in the meantime.  If not, such is life
> and I'll try to wait patiently :) + we'll review the existing code.

I am afraid not yet. Thanks for reviewing the changes :-)

Suzuki