I forgot to mention that I am testing on a NUC7i7DNH.

Hello, I have been playing with using Zephyr as UOS on top of Ubuntu as SOS, using the Industry scenario and launching the UOS with launch_zephyr.sh. I created this small program to prove that Zephyr

Cancel meeting this week. Happy Chinese New Year Holiday~ <Detailed calendar will be published1 week before meeting> Project ACRN: A flexible, light-weight, open source reference hypervisor

Cancel meeting this week. Happy Chinese New Year Holiday~ <Detailed calendar will be published1 week before meeting> Project ACRN: A flexible, light-weight, open source reference hypervisor

Fixing patch was sent to acrn-dev mail list: https://lists.projectacrn.org/g/acrn-dev/topic/patch_makefile_disable/69659519?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,69659519 Regards Yin,

The kernel also hit same issue and it disabled the -fcf-protection if the -mindirect-branch is enabled (for retpoline): https://lkml.org/lkml/2019/7/9/641 I will submit a patch

Topic (1/15): Expose and pass through platform hidden PCIs devices to SOS Project ACRN: A flexible, light-weight, opensource reference hypervisor for IoT devices https://projectacrn.org ||

Topic (1/5): Expose and pass through platform hidden PCIs devices to SOS Project ACRN: A flexible, light-weight, opensource reference hypervisor for IoT devices https://projectacrn.org ||

Hi all, We are very pleased to announce Version 1.5 release of ACRN. You can see the release blog from https://projectacrn.org/blog/ and detailed Release Notes in website

Hi Liu, Just to confirm that the suggested fix works. Can now boot the sos from ACRN. Thanks for all the help. Cheers Steve. -- Engineering Director IOTech Systems Ltd.

I found this article that suggests Ubuntu 19.10 specifically enabled this flag for the first time by default:https://www.phoronix.com/scan.php?page=news_item&px=Ubuntu-19.10-GCC-Hardening. I guess

Thanks Geoffroy. Odd that the same version of the compiler works with Clear Linux ? Cheers Steve. -- Engineering Director IOTech Systems Ltd.

Thanks Steve, I can confirm that I see the problem too using Ubuntu 19.10 (gcc 9.2.1). Ubuntu 19.04 compiles ACRN correctly (uses gcc 8.3.0). I have filed an issue to track this:

Hi Geoffroy, Build from a clean checkout on 19.10 (not 19.04) with: make all BOARD=nuc7i7dnb SCENARIO=industry RELEASE=0 Default gcc is 9.2.1 Cheers Steve. -- Engineering Director IOTech Systems

We use a gcc 9.2.1 in Clear Linux to build ACRN these days, I’ll see if I can spin up an Ubuntu 19.04 machine to reproduce the failure. Geoffroy

We also have a Docker container you can use to build ACRN, if that’s any easier to you – here are the instructions on how to use

Hi Liu, Followed exactly these instructions, except on Ubuntu 19.10. To me looks like a gcc 9 or config issue as clearly doesn't like ‘-mindirect-branch’ and ‘-fcf-protection’ used together.

Hi Steve, We don’t met this issue with Ubuntu 18.04. Do you install following package? As mentioned on: https://projectacrn.github.io/1.5/getting-started/building-from-source.html

Hi Yin, Will validate whether suggested quick fix works. Looks like not happy building with gcc 9 (am using Ubuntu 19.10): cc -Iinclude -Iinclude/lib -Iinclude/lib/crypto -Iinclude/common