Hi Alfonso, #1 Did you calibrate the zephyr clock rate? I am not an expert on Zephyr, as I known, clock calibration is needed in Zephyr. #2 Echo to Geoffroy, heavy workloads on SOS may have

It turns out that disabling Intel Turbo Boost in the BIOS makes the times spent in the calculation on Zephyr almost constant regardless of the load on the SOS. Which makes sense after reading that

Hi Geoffroy, I have tried with the new script, and I think it helps a bit, although it does not remove completely the increment in time when something is running in the SOS. But it is a bit difficult

Hi Alfonso, I’m assuming you have been using the standard launch script (from /usr/share/acrn/samples/nuc/launch_zephyr.sh) to test your Zephyr app. If so, can you try to use this script instead

Hi Alfonso, My best guess as to what’s happening is that there is some contention between the Service VM and the Zephyr VM to use the cache, Zephyr would typically stay in cache but now that

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