-----Original Message-----
From: acrn-users@... <acrn-users@...>
On Behalf Of Yin, Fengwei
Sent: Friday, April 3, 2020 5:21 PM
To: acrn-users@...
Subject: Re: [acrn-users] Problem with Industry Scenario on a NUC7i7DNH

Hi Steve,

On 2020/4/3 下午5:16, Steve Osselton wrote:

Have attached dmesg log. Actually looks like ttyS0 is using 0x3f8:

#  dmesg | grep tty
[    0.000000] Command line:
initrd=\EFI\org.clearlinux\freestanding-00-intel-ucode.cpio
initrd=\EFI\org.clearlinux\freestanding-i915-firmware.cpio.xz
root=PARTUUID=94a40b85-bbce-41ee-8fe7-4c85e8a89068 quiet

console=tty0

console=ttyS0,115200n8 consoleblank=0 cryptomgr.notests
hvlog=2M@0x1FE00000 i915.avail_planes_per_pipe=0x01010F
i915.domain_plane_owners=0x011111110000 i915.enable_guc=0
i915.enable_gvt=1 i915.nuclear_pageflip=1 ignore_loglevel
init=/usr/lib/systemd/systemd-bootchart intel_iommu=igfx_off
memmap=2M$0x1FE00000 no_timer_check no_timer_check noreplace-

smp

rcu_nocbs=0-64 rcupdate.rcu_expedited=1 rootfstype=ext4,btrfs,xfs
rootwait tsc=reliable rw
[    0.123693] Kernel command line:
initrd=\EFI\org.clearlinux\freestanding-00-intel-ucode.cpio
initrd=\EFI\org.clearlinux\freestanding-i915-firmware.cpio.xz
root=PARTUUID=94a40b85-bbce-41ee-8fe7-4c85e8a89068 quiet

console=tty0

console=ttyS0,115200n8 consoleblank=0 cryptomgr.notests
hvlog=2M@0x1FE00000 i915.avail_planes_per_pipe=0x01010F
i915.domain_plane_owners=0x011111110000 i915.enable_guc=0
i915.enable_gvt=1 i915.nuclear_pageflip=1 ignore_loglevel
init=/usr/lib/systemd/systemd-bootchart intel_iommu=igfx_off
memmap=2M$0x1FE00000 no_timer_check no_timer_check noreplace-

smp

rcu_nocbs=0-64 rcupdate.rcu_expedited=1 rootfstype=ext4,btrfs,xfs
rootwait tsc=reliable rw
[    0.202532] console [tty0] enabled
[    0.275084] console [ttyS0] enabled
[    0.711180] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200)
is a 16550A
[    0.966636] serial8250: ttyS1 at I/O 0x2f8 (irq = 3, base_baud =
115200) is a 16550A
[    0.988793] 0000:00:16.3: ttyS2 at I/O 0xf0a0 (irq = 19, base_baud =
115200) is a 16550A
[    1.666800] systemd[1]: system-getty.slice: unit configures an IP
firewall, but the local system does not support BPF/cgroup firewalling.
[    1.669839] systemd[1]: Created slice system-getty.slice.
[    1.670160] systemd[1]: Created slice system-serial\x2dgetty.slice.

From the kernel, the SOS serial console is using ttyS0:
console=ttyS0,115200n8
And it looks like everything is fine from the dmesg output.

So which serial port is broken? ACRN? SOS kernel?