Enable KVM by default on Lemans and Monaco Platforms by vkraleti · Pull Request #2251 · qualcomm-linux/meta-qcom

vkraleti · 2026-05-20T09:35:43Z

All PILs are functioning correctly and KVM can be enabled by default on Lemans and Monaco platforms.
Update FIT_DTB_COMPATIBLE entries and machine configurations to switch to default KVM for these boards.

ricardosalveti · 2026-05-20T22:35:42Z

 FIT_DTB_COMPATIBLE[qcs8300-ride+qcs8300-ride-camx+monaco-el2+monaco-camx-el2] = "qcom,qcs8300-adp-camx-el2kvm"
 FIT_DTB_COMPATIBLE[qcs8300-ride+qcs8300-ride-camx+monaco-el2+monaco-camx-el2+monaco-staging] = "qcom,qcs8300-adp-camx-el2kvm-staging"
-FIT_DTB_COMPATIBLE[qcs9100-ride] = " \
+FIT_DTB_COMPATIBLE[qcs9100-ride+lemans-el2] = " \


Is lemans-el2 available on linux-yocto?

lemans-el2.dtbo is available from 'v7.0-rc1' onwards. I'll backport the change as a .patch to linux-yocto.

No. Supporting EL2 is not just the DT, it might require driver changes, etc.
We should have all the mechanisms to have DTs supported by qcom-6.18 / qcom-next but not by linux-yocto.

From a kernel build perspective, meta-qcom already supports selecting DTB/DTBOs per kernel. However, the FIT_DTB_COMPATIBLE mapping is common for all. Should we now consider splitting FIT_DTB_COMPATIBLE per kernel? Without doing so, we will not be able to map different DTB/DTBO sets to the same compatible string.

Alternatively, we may need to introduce a new substring, say 'gunyah' so that only the base DTB can selected, without the EL2 DTBO.

I think FIT_DTB_COMPATIBLE should remain common. In the end, the list of the DTBs for each feature should not depend on the kernel version. The list of DTBs available, might, but it's already handled.

Will it be set by the UEFI or by the user?

By user. KVM or Gunyah usage is not defined in the hardware metadata. So UEFI can't handle it at this point.

What if the user selects el2gh while we flashed xbl_config_kvm?

This can happen even with current implementation. This PR's goal is to switch the default from Gunyah to KVM. IMO, mismatch b/w DTBO and xbl_config needs a separate discussion.

What if the user selects el2gh while we flashed xbl_config_kvm?

We tried on hamoa, if we don't use uefi_dtbs_kvm.xz and el2 dtbo together, there will be bootup issue.

github-actions · 2026-05-24T17:39:35Z

Test run workflow

Test jobs for commit `01b1d38`

qcom-distro
Pass: 263 | Fail: 3 | Total: 289

nodistro
Pass: 9 | Fail: 0 | Total: 9

qcom-distro_linux-qcom-6.18
Pass: 197 | Fail: 9 | Total: 231

test-reporting-app · 2026-05-24T17:40:07Z

Test Results

25 files - 78 25 suites - 607 55m 45s ⏱️ - 4h 2m 25s
13 tests - 115 10 ✅ - 92 0 💤 ± 0 3 ❌ - 23
187 runs - 5 821 178 ✅ - 5 745 0 💤 - 51 9 ❌ - 25

For more details on these failures, see this check.

Results for commit c58dd22. ± Comparison against base commit 5716703.

This pull request removes 115 tests.

0_AudioRecord_Config01 ‑ AudioRecord_Config01
0_BT_FW_KMD_Service ‑ BT_FW_KMD_Service
0_GStreamer_Video_Encode_h264_480p ‑ GStreamer_Video_Encode_h264_480p
0_Libcamera_cam ‑ Libcamera_cam
0_Weston_Runtime_Preflight ‑ Weston_Runtime_Preflight
0_hotplug ‑ hotplug
10_AudioRecord ‑ AudioRecord
10_Kubernetes_Kernel_Config ‑ Kubernetes_Kernel_Config
11_DSP_AudioPD ‑ DSP_AudioPD
11_Ethernet ‑ Ethernet
…

♻️ This comment has been updated with latest results.

vkraleti · 2026-05-25T17:40:51Z

Using MACHINE_FEATURES for to KVM enablement is now part of #2289. This PR only focuses switching Lemans platforms to default KVM.

github-actions · 2026-05-25T20:19:06Z

Test run workflow

Test jobs for commit `c58dd22`

qcom-distro
Pass: 8 | Fail: 1 | Total: 9

nodistro
Pass: 8 | Fail: 1 | Total: 9

qcom-distro_linux-qcom-6.18
Pass: 6 | Fail: 1 | Total: 7

lumag · 2026-05-26T05:10:54Z

Why is this separate from #2289 ?

vkraleti · 2026-05-26T07:21:05Z

Why is this separate from #2289 ?

Just to simplify reviews. Felt, switching 'kvm' to MACHINE_FEAUTRES and making 'kvm' default on Lemans are independent tasks.

lumag · 2026-05-26T07:22:20Z

Why is this separate from #2289 ?

Just to simplify reviews. Felt, switching 'kvm' to MACHINE_FEAUTRES and making 'kvm' default on Lemans are independent tasks.

And of course it was described in the PR desription. Was it not?

vkraleti · 2026-05-26T08:53:54Z

Do you want me to add changes from #2289 also here?

bhargav0610 · 2026-05-26T19:42:09Z

bootup failure on Rb8 https://lava.infra.foundries.io/scheduler/job/231031
[RM]Error: unexpected value in image ELF ehdr
Static VM not in READY state
GearVM not started

vkraleti · 2026-05-27T00:00:41Z

bootup failure on Rb8 https://lava.infra.foundries.io/scheduler/job/231031 [RM]Error: unexpected value in image ELF ehdr Static VM not in READY state GearVM not started

Thanks for proactively checking. This PR is dependent on #2289 for picking correct XBL config. Please wait till final reviews before reporting further failures.

lumag · 2026-05-28T04:00:39Z

bootup failure on Rb8 https://lava.infra.foundries.io/scheduler/job/231031 [RM]Error: unexpected value in image ELF ehdr Static VM not in READY state GearVM not started

Thanks for proactively checking. This PR is dependent on #2289 for picking correct XBL config. Please wait till final reviews before reporting further failures.

Again, how does one guess that, if you don't write it in the PR description?

vkraleti · 2026-05-28T05:52:41Z

bootup failure on Rb8 https://lava.infra.foundries.io/scheduler/job/231031 [RM]Error: unexpected value in image ELF ehdr Static VM not in READY state GearVM not started

Thanks for proactively checking. This PR is dependent on #2289 for picking correct XBL config. Please wait till final reviews before reporting further failures.

Again, how does one guess that, if you don't write it in the PR description?

This is RFC draft PR to seek inputs on default KVM enablement. I wasn't really expecting test teams monitoring it. There is even a comment saying the PR is broken into two.

github-actions · 2026-05-28T15:14:18Z

Test run workflow

Test jobs for commit `14107c6`

qcom-distro_linux-qcom-6.18
Pass: 206 | Fail: 6 | Total: 249

qcom-distro
Pass: 249 | Fail: 11 | Total: 291

nodistro
Pass: 8 | Fail: 1 | Total: 9

…BL selection Avoid hardcoding XBL configuration selection in image_types_qcom bbclass, which limits flexibility to enable KVM selectively across boards. Define QCOM_XBL_CONFIG in machine configuration files to select the appropriate XBL config based on `kvm` in COMBINED_FEATURES. This enables per-board control of XBL configuration selection. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

…stro-kvm Adjust CI to handle removal of qcom-distro-kvm configuration in meta-qcom-distro, where KVM is now enabled by default. Replace usage of the qcom-distro-kvm distro with explicit MACHINE_FEATURES and DISTRO_FEATURES additions to retain KVM-enabled builds during the transition. This is a temporary workaround until CI fully adopts the new KVM-by-default model. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Enable KVM by default on iq-9075-evk by adding 'kvm' to MACHINE_FEATURES. Update QCOM_XBL_CONFIG to use the KVM XBL config by default and select Gunyah one when enabled via DISTRO_FEATURES. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Enable KVM by default on qcs9100-ride-sx by adding 'kvm' to MACHINE_FEATURES. Update QCOM_XBL_CONFIG to use the KVM XBL config by default and select Gunyah when enabled via DISTRO_FEATURES. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Enable KVM by default on iq-8275-evk by adding 'kvm' to MACHINE_FEATURES. Update QCOM_XBL_CONFIG to use the KVM XBL config by default and select Gunyah when enabled via DISTRO_FEATURES. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

For linux-qcom kernels update FIT_DTB_COMPATIBLE entries of Lemans platforms to use lemans-el2.dtbo by default, enabling KVM. Replace el2kvm-specific compatible strings with default variants to align with the KVM-by-default behavior. Update non-EL2 entries to use `el2gh` substring in compatible strings, indicating mapping to the Gunyah hypervisor. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Update FIT_DTB_COMPATIBLE entries for Monaco platforms to use monaco-el2.dtbo by default, enabling KVM configurations. Replace el2kvm-specific compatible strings with default variants to align with the KVM-by-default behavior. Update non-EL2 entries to use `el2gh` substring in compatible strings, indicating mapping to the Gunyah hypervisor. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Add ci/qcom-distro-gunyah.yml KAS fragment to build with 'gunyah' in DISTRO_FEATURES. This enables composing builds that run without KVM support. Example: kas build ci/iq-9075-evk.yml:ci/qcom-distro-gunyah.yml Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Replace the iq-9075-evk KVM configuration in the CI build matrix with a Gunyah-based variant. KVM is now enabled by default on iq-9075-evk, making the dedicated KVM build is redundent. Replacing it with a Gunyah configuration ensures that non-KVM virtualization paths are still validated in CI. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

Replace the iq-8275-evk KVM configuration in the CI build matrix with a Gunyah-based variant. KVM is now enabled by default on iq-8275-evk, making the dedicated KVM build is redundent. Replacing it with a Gunyah configuration ensures that non-KVM virtualization paths are still validated in CI. Signed-off-by: Viswanath Kraleti <viswanath.kraleti@oss.qualcomm.com>

ricardosalveti reviewed May 20, 2026

View reviewed changes

Comment thread ci/iq-9075-evk.yml Outdated

vkraleti force-pushed the default-kvm branch 2 times, most recently from 2e959cf to da57295 Compare May 24, 2026 11:54

vkraleti mentioned this pull request May 24, 2026

Add Gunyah-specific distro configuration qualcomm-linux/meta-qcom-distro#306

Open

lumag requested changes May 24, 2026

View reviewed changes

Comment thread conf/machine/include/fit-dtb-compatible.inc Outdated

Comment thread conf/machine/iq-9075-evk.conf

Comment thread conf/machine/include/fit-dtb-compatible.inc Outdated

vkraleti force-pushed the default-kvm branch from da57295 to 01b1d38 Compare May 24, 2026 14:32

vkraleti marked this pull request as ready for review May 24, 2026 14:34

vkraleti requested review from anujm1, koenkooi, mwasilew, ndechesne, quaresmajose and sbanerjeeqc as code owners May 24, 2026 14:34

vkraleti force-pushed the default-kvm branch from 01b1d38 to c58dd22 Compare May 25, 2026 17:42

vkraleti mentioned this pull request May 26, 2026

Define QCOM_XBL_CONFIG in machine conf for XBL config selection #2289

Open

vkraleti force-pushed the default-kvm branch from c58dd22 to ca6c819 Compare May 27, 2026 06:24

vkraleti changed the title ~~RFC: Enable KVM by default on Lemans Platforms~~ RFC: Enable KVM by default on Lemans and Monaco Platforms May 27, 2026

vkraleti force-pushed the default-kvm branch from ca6c819 to 5fefdff Compare May 27, 2026 09:26

vkraleti force-pushed the default-kvm branch from 5fefdff to 14107c6 Compare May 28, 2026 09:32

sbanerjeeqc added the backport wrynose label May 29, 2026

sbanerjeeqc added this to the qli-2.0 GA pull-request freeze milestone May 29, 2026

vkraleti changed the title ~~RFC: Enable KVM by default on Lemans and Monaco Platforms~~ Enable KVM by default on Lemans and Monaco Platforms May 29, 2026

vkraleti force-pushed the default-kvm branch 2 times, most recently from 10d16af to 8b9c962 Compare May 30, 2026 10:10

vkraleti added 11 commits May 30, 2026 23:02

vkraleti force-pushed the default-kvm branch from 8b9c962 to 60c9f8a Compare May 30, 2026 18:00

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