Hi Magali Lemes do Sacramento Thank you for providing the 5.4 test kernel with the patch applied. I have installed it on my system, and it successfully resolved the issue I was encountering. Below is the output of uname -a to confirm that I am running the patched kernel:"Linux qidong-ubuntu20 5.4.0-2000-generic #0+test-Ubuntu SMP Mon Mar 31 13:00:43 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux"
To provide more details about the issue I encountered: The problem occurred on an ARM bare-metal instance (ebmc8y specification) on Alibaba Cloud when running Ubuntu 20. During the boot process, while loading the ARM SMMUv3 driver, there was a conflict error during the ioremap operation. Interestingly, this issue did not occur on Ubuntu 22. After performing a comparative analysis between the kernels of Ubuntu 20 and Ubuntu 22, we identified that the patch I provided resolves the ioremap conflict error. This confirms that the patch is effective in addressing the problem. I hope this patch can be integrated into the generic kernel to ensure broader compatibility and stability for users running Ubuntu 20 on similar hardware configurations. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2067864 Title: iommu/arm-smmu-v3: Don't reserve implementation defined register space To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2067864/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
