linux-kernel - Re: [PATCH v9 00/43] arm64: Support for Arm CCA in KVM

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Message-ID: <0ef9c9bf-70df-47fb-976b-acf6bff4ca3a@redhat.com>
Date: Fri, 4 Jul 2025 14:58:13 +1000
From: Gavin Shan <gshan@...hat.com>
To: "Emi Kisanuki (Fujitsu)" <fj0570is@...itsu.com>,
 'Steven Price' <steven.price@....com>,
 "'kvm@...r.kernel.org'" <kvm@...r.kernel.org>,
 "'kvmarm@...ts.linux.dev'" <kvmarm@...ts.linux.dev>
Cc: '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-arm-kernel@...ts.infradead.org>,
 "'linux-kernel@...r.kernel.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'" <linux-coco@...ts.linux.dev>,
 'Ganapatrao Kulkarni' <gankulkarni@...amperecomputing.com>,
 'Shanker Donthineni' <sdonthineni@...dia.com>,
 'Alper Gun' <alpergun@...gle.com>,
 "'Aneesh Kumar K . V'" <aneesh.kumar@...nel.org>
Subject: Re: [PATCH v9 00/43] arm64: Support for Arm CCA in KVM

On 6/25/25 11:51 AM, Emi Kisanuki (Fujitsu) wrote:
> We tested this patch in our internal simulator which is a hardware simulator for Fujitsu's next generation CPU known as Monaka. and it produced the expected results.
> 
> I have verified the following
> 1. Launching the realm VM using Internal simulator -> Successfully launched by disabling MPAM support in the ID register.
> 2. Running kvm-unit-tests (with lkvm) -> All tests passed except for PMU (as expected, since PMU is not supported by the Internal simulator).[1]
> 
> Tested-by: Emi Kisanuki <fj0570is@...itsu.com> [1] https://gitlab.arm.com/linux-arm/kvm-unit-tests-cca cca/latest
> 

The series looks good to me in my test where the host runs in the environment
emulated by QEMU. With below components, the VM can be started, destroyed and
simple workloads can be running in the REALM guest.

Tested-by: Gavin Shan <gshan@...hat.com>

   host.tf-rmm    https://git.codelinaro.org/linaro/dcap/rmm.git
                  (cca/v8)
   host.edk2      git@...hub.com:tianocore/edk2.git
                  (edk2-stable202411)
   host.tf-a      https://git.codelinaro.org/linaro/dcap/tf-a/trusted-firmware-a.git
                  (cca/v4)
   host.qemu      https://git.qemu.org/git/qemu.git
                  (stable-9.2)
   host.linux     https://git.gitlab.arm.com/linux-arm/linux-cca.git
                  (cca-host/v9)
   guest.qemu     https://git.codelinaro.org/linaro/dcap/qemu.git
                  (cca/latest)
   guest.kvmtool  https://gitlab.arm.com/linux-arm/kvmtool-cca
                  (cca/latest)
   guest.linux    upstream (v6.16.rc2)

Thanks,
Gavin