Re: [PATCH v13 00/48] arm64: Support for Arm CCA in KVM

[Suzuki K Poulose <suzuki.poulose@arm.com>]

On 25/03/2026 10:16, Suzuki K Poulose wrote:
> Hi Gavin
> 
> Steven is on holidays, so I am jumping in here.
> 
> On 25/03/2026 06:37, Gavin Shan wrote:
>> Hi Steven,
>>
>> On 3/21/26 2:45 AM, Steven Price wrote:
>>> On 19/03/2026 23:02, Mathieu Poirier wrote:
>>
>> [...]
>>
>>>>>
>>>>> The TF-RMM has not yet merged the RMMv2.0 support, so you will need to
>>>>> use the following branch:
>>>>>
>>>>> https://git.trustedfirmware.org/TF-RMM/tf-rmm.git topics/rmm-v2.0-poc
>>>>
>>>> This RMM version is expecting a RMM EL3 interface version of at 
>>>> least 2.0.  Do
>>>> you have a TF-A to use with it?
>>>
>>> You should be able to use the 'master' branch of the TF-A repository.
>>> For now you need to set RMM_V1_COMPAT=0 to enable 2.0 support.
>>>
>>
>> In upstream TF-A repository [1], I don't see the config option 
>> 'RMM_V1_COMPAT'.
>> would it be something else?
>>
>> [1] git@github.com:ARM-software/arm-trusted-firmware.git    (branch: 
>> master)
>>
> 
> suzuki@ewhatever:trusted-firmware-a$ git grep RMM_V1_COMPAT
> Makefile:       RMM_V1_COMPAT \
> Makefile:       RMM_V1_COMPAT \
> docs/getting_started/build-options.rst:-  ``RMM_V1_COMPAT``: Boolean 
> flag to enable support for RMM v1.x compatibility
> include/services/rmmd_svc.h:#if RMM_V1_COMPAT
> include/services/rmmd_svc.h:#endif /* RMM_V1_COMPAT */
> make_helpers/defaults.mk:RMM_V1_COMPAT                  := 1
> services/std_svc/rmmd/rmmd_main.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_main.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_main.c:#if !RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_main.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_main.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_main.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_rmm_lfa.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_rmm_lfa.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_rmm_lfa.c:#if RMM_V1_COMPAT
> services/std_svc/rmmd/rmmd_rmm_lfa.c:#if RMM_V1_COMPAT
> suzuki@ewhatever:trusted-firmware-a$ git log --oneline -1
> 8dae0862c (HEAD, origin/master, origin/integration, origin/HEAD) Merge 
> changes from topic "qti_lemans_evk" into integration
> suzuki@ewhatever:trusted-firmware-a$ git remote get-url origin
> https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
> 
> 
> 
>> I use the following command to build TF-A image. The RMM-EL3 
>> compatible issue is
>> still seen.
>>
>>      TFA_PATH=$PWD
>>      EDK2_IMAGE=${TFA_PATH}/../edk2/Build/ArmVirtQemuKernel-AARCH64/ 
>> RELEASE_GCC5/FV/QEMU_EFI.fd
>>      RMM_IMAGE=${TFA_PATH}/../tf-rmm/build-qemu/Debug/rmm.img
>>      make CROSS_COMPILE=aarch64-none-elf-                               \
>>           PLAT=qemu ENABLE_RME=1 RMM_V1_COMPAT=0 DEBUG=1 LOG_LEVEL=40   \
>>           QEMU_USE_GIC_DRIVER=QEMU_GICV3                                \
>>           BL33=${EDK2_IMAGE} RMM=${RMM_IMAGE}                           \
>>           -j 8 all fip
>>
> 
> 
> 
> 
>> Booting messages
>> ================
>> INFO:    BL31: Initializing runtime services
>> INFO:    RMM setup done.
>> INFO:    BL31: Initializing RMM
>> INFO:    RMM init start.
>> ERROR:   RMM init failed: -2
>> WARNING: BL31: RMM initialization failed
> 
> This is definitely the TF-A RMM incompatibility.
> 
> Btw, the shrinkwrap overlay configs in tf-RMM repository should work.
> But unfortunately the Linux/kvmtool repositories are pointing to
> internal repositories. The following patch should fix it and get
> it all working. I am working with the tf-rmm team to fix this.

This is now fixed in the branch :

https://git.trustedfirmware.org/plugins/gitiles/TF-RMM/tf-rmm/+/refs/heads/topics/rmm-v2.0-poc/tools/shrinkwrap/configs/cca.yaml

Cheers
Suzuki