[PATCH v16 00/45] arm64: Support for Arm CCA in KVM
Suzuki K Poulose
suzuki.poulose at arm.com
Tue Aug 11 04:12:16 PDT 2026
On 11/08/2026 05:44, Gavin Shan wrote:
> On 8/7/26 8:05 AM, Suzuki K Poulose wrote:
>
> [...]
>
>>
>> Here is a cleaned up version, rebased on to Will's kvmtool master
>> branch:
>>
>> https://gitlab.arm.com/linux-arm/kvmtool-cca cca/kvm-v16
>>
>> (This works with the v15 of the KVM series too)
>> Build on top of Fuad's Guest memfd support patches.
>>
>
> With the following combination, I'm able boot up the realm guest.
>
> tf-rmm: https://git.trustedfirmware.org/TF-RMM/tf-
> rmm.git (branch: topics/rmm-v2.0-poc_2)
Please be aware that CCA KVM v15 onwards, the above branch is not
compatible. You should be using rmm-v2.0-poc_3. Please could you
confirm if this is still an issue ?
Cheers
Suzuki
> tf-a: https://git.trustedfirmware.org/TF-A/trusted-firmware-
> a.git (branch: master)
> host: https://git.gitlab.arm.com/linux-arm/linux-
> cca.git (branch: cca-host/v16)
> kvmtool: https://gitlab.arm.com/linux-arm/kvmtool-
> cca (branch: cca/kvm-v16)
>
> However, the guest can't boot up and become stuck in
> SMC_RSI_IPA_STATE_SET request,
> which can't completed by the host.
>
> tf-rmm: https://git.trustedfirmware.org/TF-RMM/tf-
> rmm.git (branch: topics/rmm-v2.0-poc_3)
>
> (1) Login the emulated host
>
> machine$ ssh -o StrictHostKeyChecking=no root at 10.26.1.240
>
> (2) Start realm guest using kvmtool
>
> root at host:~# lkvm run --realm -c 1 -m 256 \
> -k /mnt/linux/arch/arm64/boot/Image \
> -i /mnt/buildroot/output/images/rootfs.cpio.xz \
> -p earlycon=uart,mmio,0x101000000
> :
> [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x000f0510]
> [ 0.000000] Linux version 7.2.0-rc5-gavin-gf5098b6bae76
> (gshan at nvidia-grace-hopper-01.khw.eng.bos2.dc.redhat.com) (gcc (GCC)
> 14.3.1 20251022 (Red Hat 14.3.1-4), GNU ld version 2.41-65.el10) #47 SMP
> PREEMPT Mon Jul 27 02:29:03 EDT 2026
> [ 0.000000] KASLR enabled
> [ 0.000000] Machine model: linux,dummy-virt
> [ 0.000000] earlycon: uart0 at MMIO 0x0000000101000000 (options '')
> [ 0.000000] printk: legacy bootconsole [uart0] enabled
> [ 0.000000] efi: UEFI not found.
> [ 0.000000] OF: reserved mem: Reserved memory: No reserved-memory
> node in the DT
> [ 0.000000] NUMA: Faking a node at [mem
> 0x0000000080000000-0x000000008fffffff]
> [ 0.000000] NODE_DATA(0) allocated [mem 0x8ff76dc0-0x8ff7ac7f]
> [ 0.000000] psci: probing for conduit method from DT.
> [ 0.000000] psci: PSCIv1.1 detected in firmware.
> [ 0.000000] psci: Using standard PSCI v0.2 function IDs
> [ 0.000000] psci: MIGRATE_INFO_TYPE not supported.
> [ 0.000000] psci: SMC Calling Convention v1.2
> [ 0.000000] RME: Using RSI version 1.0
> <... no more output from the guest ...>
>
>
> (3) The output from host's serial console
>
> SMC_RMI_REALM_CREATE 12a4c7000 12a4c6000 > RMI_INCOMPLETE 0
> 24 0 0
> SMC_RMI_OP_MEM_DONATE 0 1002c7098 9 > RMI_INCOMPLETE 9 0 0 0
> SMC_RMI_OP_CONTINUE 0 0 > RMI_SUCCESS 0 0
> SMC_RMI_RTT_UNPROT_UNMAP 12a4c7000 18f85c000 18fe00000 0 0 >
> RMI_ERROR_RTT 2 0 0 0 0
> SMC_RMI_RTT_UNPROT_UNMAP 12a4c7000 18fe00000 18fe10000 0 0 >
> RMI_ERROR_RTT 2 0 0 0 0
> SMC_RMI_RTT_UNPROT_UNMAP 12a4c7000 18fe00000 18fe10000 0 0 >
> RMI_ERROR_RTT 2 0 0 0 0
> SMC_RMI_REC_CREATE 12a4c7000 12a392000 12a391000 >
> RMI_INCOMPLETE 0 40 0 0
> SMC_RMI_OP_MEM_DONATE 0 106406098 10 > RMI_INCOMPLETE 10 0 0 0
> SMC_RMI_OP_CONTINUE 0 0 > RMI_SUCCESS 0 0
> SMC_RMI_REALM_ACTIVATE 12a4c7000 > RMI_SUCCESS
> Unhandled write S2_0_C0_C2_2
> SMC_RMI_RTT_DATA_MAP 12a4c7000 8ffb4000 8ffb5000 1
> 129f1d004 > RMI_INCOMPLETE 0 0 0 1
> SMC_RMI_OP_CONTINUE 0 0 > RMI_SUCCESS 8ffb5000 0
> PSCI_84000000 0 0 0 0 0 0 0 > 10001 0 0 0
> PSCI_84000006 0 0 0 0 0 0 0 > ffffffffffffffff 0 0 0
> PSCI_8400000a 80000000 0 0 0 0 0 0 > 0 0 0 0
> SMC_80000000 0 0 0 0 0 0 0 > 10002 0 0 0
> SMC_84000050 1 0 0 ffffacd67d1e8000
> ffffacd67d124000 0 0 > ffffffffffffffff 0 0 0
> SMC_80000001 80000002 ffff 0 ffffacd67d1e8000
> ffffacd67d124000 ffffacd67cd5d000 ffffacd67cd5dd38 > ffffffffffffffff 0 0 0
> PSCI_8400000a c4000001 0 0 0 0 0 0 > 0 0 0 0
> PSCI_8400000a c4000012 0 0 0 0 0 0 >
> ffffffffffffffff 0 0 0
> PSCI_8400000a c4000015 0 0 0 0 0 0 >
> ffffffffffffffff 0 0 0
> SMC_8600ff01 ffffacd67cfc0740 10002 0 0 0 0
> ffffacd67cfb3cc8 > ffffffffffffffff 0 0 0
> SMC_RSI_VERSION 10000 > RSI_SUCCESS 10000 10001
> SMC_RSI_REALM_CONFIG 81385000 > RSI_SUCCESS
> SMC_RSI_IPA_STATE_SET 80000000 90000000 1 0
> SMC_RMI_RTT_SET_RIPAS 12a4c7000 12a392000 80000000 90000000
> > RMI_ERROR_RTT 3
> SMC_RMI_RTT_SET_RIPAS 12a4c7000 12a392000 80000000 90000000
> > RMI_ERROR_RTT 3
> SMC_RMI_RTT_SET_RIPAS 12a4c7000 12a392000 80000000 90000000
> > RMI_ERROR_RTT 3
> SMC_RMI_RTT_SET_RIPAS 12a4c7000 12a392000 80000000 90000000
> > RMI_ERROR_RTT 3
> SMC_RMI_RTT_SET_RIPAS 12a4c7000 12a392000 80000000 90000000
> > RMI_ERROR_RTT 3
> SMC_RMI_RTT_SET_RIPAS 12a4c7000 12a392000 80000000 90000000
> > RMI_ERROR_RTT 3
> <... the last message repeats ...>
>
> Thanks,
> Gavin
>
>
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