How to set CPU Core UOS

[paspndevops]

Hi,

Could you please help me how to set single core for UOS vm .i am using VERSION_ID=31620.'Launch_fedora.sh'

HW Deatils:
product: NUC7i7BNB
vendor: Intel Corporation
physical id: 0
version: J31145-304
serial: GEBN72200F0J
slot: Default string
*-firmware
description: BIOS
vendor: Intel Corp.
physical id: 0
version: BNKBL357.86A.0080.2019.0725.1139
date: 07/25/2019
size: 64KiB
capacity: 8128KiB

[Mingyuan18]

[External_System_ID] ACRN-5682

[fuzhongl]

@paspndevops Which UOS are you using? The default is one core for non-RT VM.
Thanks!

[paspndevops]

@fuzhongl

"vm1 is running, can't create twice"

we are using fedora 30 as a UOS now we would like to run 'two' VM's working in parallel
One is fedora 30 and other one is Ubuntu 18.04

VM1 should support hdmi1 and VM2 works on hdmi2

Thanks in advance

[fuzhongl]

@paspndevops The fedora 30 and Ubuntu 18.04 will both use PipeA.
So you must set one to headless.
Thanks!

[paspndevops]

@fuzhongl

Thanks for your reply i am using both VM's as headless could you please help me.

How to start both headless VM's in my SOS with two HDMI's

Thanks

[fuzhongl]

@paspndevops
losetup –f –P --show /your_path_to/uos.img
Mount the rootfs partition and vim /mnt/etc/default/grub
Update: GRUB_CMDLINE_LINUX_DEFAULT="nomodeset" and GRUB_TERMINAL=console
sudo update-grub

Thanks!

[paspndevops]

@fuzhongl

Could you please help on following points:

• How to set two cores for fedora 30 headless UOS server
• where to modify UOS launcher script to set hdmi1/hdmi2

Here i attached my working launcher script
Thanks
launch_fedora.txt

[fuzhongl]

@paspndevops

1. you can refer this commit to set two cores for fedora 30, please using UUID 495ae2e5-2603-4d64-af76-d4bc5a8ec0e5 in launch script:
   d5c3523

2)you need modify acrn.conf:
i915.domain_plane_owners=0x011111110000 -> i915.domain_plane_owners=0x011100001111
With this setting, SOS will use PipeB.
Thanks！

[paspndevops]

@fuzhongl

Sorry for late reply i tried to both UOS as headless and unable to set hdmi 2 for 2nd VM.
cat /proc/cmdline:

BOOT_IMAGE=/boot/acrn/org.clearlinux.iot-lts2018-sos.4.19.78-98 root=UUID=25bc697e-3e39-4c0a-8b48-a75fdd191fd0 pci_devices_ignore=(0:18:1) console=tty0 console=ttyS0 rw rootwait ignore_loglevel no_timer_check consoleblank=0 i915.nuclear_pageflip=1 i915.avail_planes_per_pipe=0x01010F i915.domain_plane_owners=0x011111110000 i915.enable_gvt=1 i915.enable_guc=0 hvlog=2M@0x1FE00000 quiet splash vt.handoff=1

My quires are:

1. Specific reason for to use only NUC, shell i use my intel laptop for acrn
2. How to set HDMI-2 for UOS2
3. How to get less CPU latency in UOS(fedora)

Thanks in advance,

[fuzhongl]

@paspndevops for item 2,please modify in acrn.conf as following
from:
i915.domain_plane_owners=0x011111110000
to:
i915.domain_plane_owners=0x011100001111

[paspndevops]

@fuzhongl

could you please guide me how to configure device manager(acrn-dm) for the below device:

$ lspci -nn -s 0:02.0
00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U
Integrated Graphics [8086:193b] (rev 09)

[ 16.750769] usbcore: registered new interface driver myriad_usb_vsc
[219380.723614] myriad_usb_vsc 12-1:1.0: USB VSC device now attached to USBVSC-1

Thanks!

[fuzhongl]

@paspndevops Do you want to passthrough it to Guest VM?
We perfer gvt-g, not gvt-d.
Thanks!

[paspndevops]

@fuzhongl

Could you please provide Guest VM modified "acrn-dm" arguments

acrn-dm -A -m $mem_size -s 0:0,hostbridge
-s 2,pci-gvt -G "$2"
-s 5,virtio-console,@stdio:stdio_port
-s 6,virtio-hyper_dmabuf
-s 3,virtio-blk,/root/ubuntu_images/uosFC.img
-s 4,virtio-net,tap0
-s 7,virtio-rnd
--ovmf /usr/share/acrn/bios/OVMF.fd
$pm_channel $pm_by_vuart $pm_vuart_node
$logger_setting
--mac_seed $mac_seed
-U d2795438-25d6-11e8-864e-cb7a18b34643 \

Thanks!

[fuzhongl]

@paspndevops
Please check following link:
https://projectacrn.github.io/latest/user-guides/acrn-dm-parameters.html
Thanks!