Re: Problem with Industry Scenario on a NUC7i7DNH

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Re: Problem with Industry Scenario on a NUC7i7DNH

Yin, Fengwei <fengwei.yin@...> #639 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? Regards Yin, Fengwei On Fri, 3 Apr 2020 at 10:09, Yin, Fengwei <fengwei.yin@... <mailto:fengwei.yin@...>> wrote: Hi Steve, On 2020/4/3 下午4:55, Steve Osselton wrote: > Just a quick update, decided to update to 1.6 release and follow the > "out-of-the-box" instructions for the Industry scenario. > Everything basically looks good, installed SOS and verified can > launch RT-VM. Only one issue in that by default the 32680 > SOS image uses a serial port at 0x2f8, so no serial output: Does ACRN have no serial output or SOS have no serial output? > > # dmesg \| grep serial > [ 0.966636] serial8250: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = > 115200) is a 16550A This is for ttyS1. I believe this is a virtual UART emluated by ACRN hypervisor. I suppose it's not for SOS serial console. You should also see a ttyS0 at I/O 0x3f8... Could you please attach full SOS kernel dmesg output? Thanks. Regards Yin, Fengwei > [ 0.967622] serial 0000:00:16.3: enabling device (0000 -> 0003) > [ 1.036035] slcan: serial line CAN interface driver > [ 1.670160] systemd[1]: Created slice system-serial\x2dgetty.slice > > Cheers Steve. > > On Thu, 2 Apr 2020 at 02:17, Yin, Fengwei <fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> wrote: > > Hi Nanlin, > > On 4/1/20 10:09 AM, Xie, Nanlin wrote: > > We have one new PR that fix build issue, please refer to PR link: > https://github.com/projectacrn/acrn-hypervisor/pull/4534, hope this > will fix all build unclear issues. > > We also provided one docker image for ACRN build which is using > in ACRN CI and verification. > > > https://projectacrn.github.io/latest/tutorials/building_acrn_in_docker.html#get-the-docker-image-from-docker-hub > What Geoff talked about was the issue that ACRN could build without any > issue. But the generated binary can't work actually. Will sync with you. > > > Regards > Yin, Fengwei > > > > > > > Best wishes! > > Nanlin > > > > -----Original Message----- > > From: VanCutsem, Geoffroy <geoffroy.vancutsem@... <mailto:geoffroy.vancutsem@...> > <mailto:geoffroy.vancutsem@... <mailto:geoffroy.vancutsem@...>>> > > Sent: Wednesday, April 1, 2020 10:00 PM > > To: acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>; Xie, Nanlin > <nanlin.xie@... <mailto:nanlin.xie@...> <mailto:nanlin.xie@... <mailto:nanlin.xie@...>>> > > Subject: RE: [acrn-users] Problem with Industry Scenario on a > NUC7i7DNH > > > > > > > >> -----Original Message----- > >> From: acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > <acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >> On Behalf Of Yin, Fengwei > >> Sent: Wednesday, April 1, 2020 3:28 AM > >> To: acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>; Xie, Nanlin > <nanlin.xie@... <mailto:nanlin.xie@...> <mailto:nanlin.xie@... <mailto:nanlin.xie@...>>> > >> Subject: Re: [acrn-users] Problem with Industry Scenario on a > NUC7i7DNH > >> > >> Hi Geoff, > >> > >> On 4/1/2020 12:17 AM, Geoffroy Van Cutsem wrote: > >>> > >>> > >>>> -----Original Message----- > >>>> From: acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> <acrn- > >> users@... <mailto:users@...> <mailto:users@... <mailto:users@...>>> > >>>> On Behalf Of Yin, Fengwei > >>>> Sent: Monday, March 30, 2020 9:00 AM > >>>> To: acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>> Subject: Re: [acrn-users] Problem with Industry Scenario on a > NUC7i7DNH > >>>> > >>>> Hi Steve, > >>>> > >>>> On 3/27/20 9:23 AM, Steve Osselton wrote: > >>>>> Ok, I get: > >>>>> > >>>>> ACRN Hypervisor > >>>>> ^M^Mcalibrate_tsc, tsc_khz=2100000 > >>>>> ^M[11953769us][cpu=0][(null)][sev=2][seq=1]:HV version > >>>>> 1.5-unstable-2020-01-10 13:28:22-008c35a8-dirty DBG (daily > >>>>> tag:acrn-2020w02.1-140000p) build by iotech, start time > 11941504us > >>>>> ^M^M[11971171us][cpu=0][(null)][sev=2][seq=2]:API version 1.0 > >>>>> ^M^M[11976927us][cpu=0][(null)][sev=2][seq=3]:Detect processor: > >>>> Intel(R) > >>>>> Core(TM) i7-8650U CPU @ 1.90GHz > >>>>> ^M^M[12046263us][cpu[(null)][sev=2][sq=23]:Start VM id: 0 name: > >> ACRN > >>>> SOS VM > >>>>> > >>>> > >> ^M^MACRN:\>[12116542us][cpu=0][vm0:vcpu0][sev=2][seq=86]:write_cfg > >>>> f.5 > >>>>> not found! off: 0xdc, val: 0xff > >>>>> ^M > >>>>> ^M^M[17981795us][cpu=0][vm0:vcpu0][sev=2][seq=5642]ite_cfg 0:1f.5 > >> no > >>>>> found! off: 0xdc,l: 0xff > >>>>> ^M > >>>>> ^M^M[ 0.000000] Linux version 4.19.7-98.iot-lts2018-sos > >>>>> (mockbuild@kojibld02) (gcc ven 9.2.1 20191118 gcc-9-branch@278381 > >>>> (Clear > >>>>> Linux OS for Intel Architecture)) #1 SMP PREEMPT Mon Nov 18 > 09:22:10 > >> PST > >>>>> 2019^M > >>>> > >>>> I just copied exactly same env as yours. But didn't reproduce > the issue > >>>> as yours. > >>>> > >>>> ACRN:\>version > >>>> HV version 1.5-unstable-2020-03-30 02:50:13-008c35a8 DBG > (daily tag: > >>>> acrn-2020w02.5-140000p) build by fyin > >>>> > >>>> yin@fyin-nuc:~$ uname -a > >>>> Linux fyin-nuc 4.19.78-98.iot-lts2018-sos #1 SMP PREEMPT Mon > Nov 18 > >>>> 09:22:10 PST 2019 x86_64 x86_64 x86_64 GNU/Linux > >>>> fyin@fyin-nuc:~$ > >>>> > >>>> > >>>> I am wondering whether you could rebuild the ACRN and see whether > >> the > >>>> issue still could be triggered? Thanks. > >>>> > >>> > >>> Hi Fengwei, > >>> > >>> Do you know if different build environment could cause this > difference in > >> behavior? Can you share what your build environment is so > ideally Steve > >> could replicate it... or both of you try to build the same code > base using the > >> same Docker container and compare results again? We have a Docker > >> container that can be used for this, it's called > acrn/clearlinux-acrn- > >> builder:latest (hosted on Docker Hub). > >>> > >>> One thing I'm a bit concerned about here is how we build > things, I was > >> advised that using "make all BOARD=nuc7i7dnb SCENARIO=industry > >> RELEASE=0" does not yield to the expected results. As an > example, running > >> that command using the Docker container (as explained here [1]) > does not > >> take the variables into accounts, it compiles the hypervisor for > SDC and apl- > >> mrb. We need to fix that in our documentation... > >> I was not aware of this documentation issue. Add Nanlin. > >> > >> Basically, there shouldn't cause any difference if we use same > Docker > >> build env. > > > > Of course 😊 > > > > My question was rather if we believed that different build > environment could cause a different behavior. I remember some time > ago that we could build ACRN without error on Ubuntu but that binary > did not work correctly... hence my suggestion to use the exact same > container to ensure we eliminate a potential source of difference. > > > > Geoffroy > > > >> > >> Regards > >> Yin, Fengwei > >> > >>> > >>> [1] > >> > https://projectacrn.github.io/latest/tutorials/building_acrn_in_docker.html# > >> build-acrn-from-source-in-docker > >>> > >>> Thanks, > >>> Geoffroy > >>> > >>>> > >>>> Regards > >>>> Yin, Fengwei > >>>> > >>>>> > >>>>> Cheers Steve. > >>>>> > >>>>> On Fri, 27 Mar 2020 at 12:23, Yin, Fengwei > <fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> wrote: > >>>>> > >>>>> Hi Steve, > >>>>> > >>>>> On 3/27/2020 7:36 PM, Steve Osselton wrote: > >>>>> > > OK. Can you check the version output of your > ACRN? So we could > >>>>> know > >>>>> > > which git commit is based on. > >>>>> > > >>>>> > How do I do this without a working console ? > >>>>> ACRN will print the version info during system boot > phase. Just > >> capture > >>>>> the serial port log when boot the system with ACRN. > >>>>> > >>>>> Regards > >>>>> Yin, Fengwei > >>>>> > >>>>> > > >>>>> > Cheers Steve > >>>>> > > >>>>> > > >>>>> > On Fri, 27 Mar 2020 at 10:15, Yin, Fengwei > <fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>> > >>>> wrote: > >>>>> > > >>>>> > Hi Steve, > >>>>> > > >>>>> > On 3/27/2020 5:36 PM, Steve Osselton wrote: > >>>>> > > Hi, > >>>>> > > > >>>>> > > Bad news is that I built the hypervisor in a > container as > >>>>> there were > >>>>> > > compiler issues with Ubuntu 19.10 > >>>>> > > (which I use) and have accidentally deleted > build container :( > >>>>> > However > >>>>> > > from my notes I just followed the > >>>>> > > standard build instructions: > >>>>> > > > >>>>> > > make all BOARD=nuc7i7dnb SCENARIO=industry > RELEASE=0 > >>>>> > > > >>>>> > > The only edit I made was to change > MAX_MSIX_TABLE_NUM > >> from > >>>>> 16 to > >>>>> > 64, to > >>>>> > > support the Samsung SSD. > >>>>> > OK. Can you check the version output of your > ACRN? So we > >>>>> could know > >>>>> > which git commit is based on. > >>>>> > > >>>>> > > > >>>>> > > From SOS: > >>>>> > > > >>>>> > > $ efibootmgr -v > >>>>> > > BootCurrent: 0004 > >>>>> > > Timeout: 1 seconds > >>>>> > > BootOrder: > 0004,000A,0008,0009,0000,0003,0002,0006,0001 > >>>>> > > Boot0000* Windows Boot Manager > >>>>> > > > >>>>> > > >>>>> VenHw(99e275e7-75a0-4b37-a2e6- > >>>> > c5385e6c00cb)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.- > >>>> > .5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}...o................ > >>>>> > > Boot0001* ACRN > >>>>> > > > >>>>> VenHw(99e275e7-75a0-4b37-a2e6- > >> c5385e6c00cb)u.a.r.t.=.d.i.s.a.b.l.e.d. > >>>>> > > Boot0002* ACRN > >>>>> > > > >>>>> > > >>>>> VenHw(99e275e7-75a0-4b37-a2e6- > >>>> c5385e6c00cb)u.a.r.t.=.p.o.r.t.@.0.x.3.f.8. > >>>>> > > Boot0003* ubuntu VenHw(99e275e7-75a0-4b37-a2e6- > >>>> c5385e6c00cb) > >>>>> > > Boot0004* ACRN > >>>>> > > > >>>>> > > >>>>> HD(1,GPT,c73cc316-026d-426c-8c3d- > >>>> > >> > be0b84704fc5,0x800,0x47000)/File(\EFI\acrn\acrn.efi)u.a.r.t.=.p.o.r.t.@.0.x.3 > >>>> .f.8. > >>>>> > So the HV serial port is from here: IO port > serial with 0x3f8 > >>>>> as base IO > >>>>> > port. > >>>>> > > >>>>> > Regards > >>>>> > Yin, Fengwei > >>>>> > > >>>>> > > Boot0006* Linux bootloader > >>>>> > VenHw(99e275e7-75a0-4b37-a2e6-c5385e6c00cb) > >>>>> > > Boot0008* UEFI : LAN : PXE IP4 Intel(R) Ethernet > >>>>> Connection I219-LM > >>>>> > > > >>>>> > > >>>>> > PciRoot(0x0)/Pci(0x1f,0x6)/MAC(54b2038b7604,0)/IPv4(0.0.0.00.0.0.0 > >> ,0, > >>>> 0)..BO > >>>>> > > Boot0009* UEFI : LAN : PXE IP6 Intel(R) Ethernet > >>>>> Connection I219-LM > >>>>> > > > >>>>> > > >>>>> > PciRoot(0x0)/Pci(0x1f,0x6)/MAC(54b2038b7604,0)/IPv6([::]:<- > >>>>> [::]:,0,0)..BO > >>>>> > > Boot000A* UEFI : Samsung SSD 970 EVO Plus > 500GB : PART 0 : > >> OS > >>>>> > Bootloader > >>>>> > > > >>>>> > > >>>>> > PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/NVMe(0x1,00-25-38-58-91- > >> B4- > >>>> 1B-EB)/HD(1,GPT,f3f4994c-b68b-4b8f-8943- > >> c588b31c7e62,0x800,0xff000)..BO > >>>>> > > > >>>>> > > Cheers Steve. > >>>>> > > > >>>>> > > > >>>>> > > > >>>>> > > On Fri, 27 Mar 2020 at 06:43, Yin, Fengwei > >>>>> <fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>>> wrote: > >>>>> > > > >>>>> > > Hi Steve, > >>>>> > > > >>>>> > > On 3/26/20 6:14 AM, Steve Osselton wrote: > >>>>> > > > The board I am using is pretty much > the reference > >>>>> system > >>>>> > for the > >>>>> > > > industry scenario a NUC7i7DNH. > >>>>> > > > The only difference to the "standard" > configuration is > >>>>> > that I am > >>>>> > > using a > >>>>> > > > Samsung SSD, which meant I > >>>>> > > > had to rebuild ACRN with an increased > PCI MSIX > >>>>> table size. The > >>>>> > > SOS image > >>>>> > > > is the pre-built SOS > >>>>> > > > image "sos-industry-32030.img". Does > this answer you > >>>>> > question ? > >>>>> > > I tried same thing on my env. Everything > works fine. > >>>>> Here is > >>>>> > the ttySx > >>>>> > > info in SOS: > >>>>> > > > >>>>> > > [ 0.680315] 00:01: ttyS0 at I/O 0x3f8 > (irq = 4, > >>>>> base_baud > >>>>> > = 115200) > >>>>> > > is a 16550A > >>>>> > > [ 0.938131] serial8250: ttyS1 at I/O > 0x2f8 (irq = 3, > >>>>> > base_baud = > >>>>> > > 115200) is a 16550A > >>>>> > > > >>>>> > > It reports two PIO serial port. One is > ttyS0 and > >>>>> another one > >>>>> > is ttyS1. > >>>>> > > And also ttyS0 is still PnP UART. But it > works fine > >>>>> because > >>>>> > HV use > >>>>> > > physical serial port@0x3f8 and emulate serial > >>>>> port@0x3f8 for SOS. > >>>>> > > > >>>>> > > > >>>>> > > Here is from your kernel message: > >>>>> > > [ 4.384915] 00:02: ttyS0 at I/O 0x3f8 > (irq = 4, > >>>>> base_baud > >>>>> > = 115200) > >>>>> > > is a 16550A > >>>>> > > [ 4.648868] serial8250: ttyS2 at I/O > 0x3e8 (irq = 6, > >>>>> > base_baud = > >>>>> > > 115200) is a 16550A > >>>>> > > > >>>>> > > My ttyS1 info match the definition in > industry scenario > >>>>> > exactly. Don't > >>>>> > > know how your ttyS2 get 0x3e8. > >>>>> > > > >>>>> > > > >>>>> > > Can you share following setting: > >>>>> > > 1. git commit message of your code > base and the local > >>>>> > change made by > >>>>> > > you. The command line that you used > to build ACRN. > >>>>> > > 2. Your efibootmgr -v dump. > >>>>> > > > >>>>> > > Regards > >>>>> > > Yin, Fengwei > >>>>> > > > >>>>> > > > > >>>>> > > > Cheers Steve. > >>>>> > > > > >>>>> > > > On Thu, 26 Mar 2020 at 10:04, Yin, Fengwei > >>>>> > <fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>> > >>>>> > > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>>>> wrote: > >>>>> > > > > >>>>> > > > Hi Steve, > >>>>> > > > > >>>>> > > > On 3/26/2020 5:57 PM, Steve > Osselton wrote: > >>>>> > > > > I have attached dmesg output > from the sos. > >>>>> > > > We could see here: > >>>>> > > > [ 3.608930] pnp 00:02: [dma 0 > disabled] > >>>>> > > > [ 3.612858] pnp 00:02: Plug and > Play ACPI > >>>>> device, > >>>>> > IDs PNP0501 > >>>>> > > > (active) > >>>>> > > > > >>>>> > > > [ 4.384915] 00:02: ttyS0 at I/O > 0x3f8 (irq = 4, > >>>>> > base_baud > >>>>> > > = 115200) > >>>>> > > > is a 16550A > >>>>> > > > > >>>>> > > > > >>>>> > > > It looks like your serial port is > exposed to OS > >>>>> as PnP > >>>>> > UART. > >>>>> > > So we use > >>>>> > > > it by hardcode as hypervisor > console. At the same > >>>>> > time, SOS > >>>>> > > kernel also > >>>>> > > > see this device because it's > expressed to SOS > >>>>> kernel > >>>>> > by ACPI > >>>>> > > table. This > >>>>> > > > is why hypervisor and SOS kernel > both could > >>>>> access it. > >>>>> > > > > >>>>> > > > But the thing confused me is: > suppose we should > >>>>> > emulate 0x3f8 > >>>>> > > uart to > >>>>> > > > SOS kernel to prevent SOS access > serial port > >>>>> directly. > >>>>> > > > > >>>>> > > > Can you share your > vm_configuration.c for your > >>>>> board? I'd > >>>>> > > like to check > >>>>> > > > how virtual UART is defined for SOS. > >>>>> > > > > >>>>> > > > Regards > >>>>> > > > Yin, Fengwei > >>>>> > > > > >>>>> > > > > > >>>>> > > > > Cheers Steve > >>>>> > > > > > >>>>> > > > > On Thu, 26 Mar 2020 at 02:26, > Yin, Fengwei > >>>>> > > <fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>> > >>>>> > > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>>> > >>>>> > > > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>> > >>>>> > > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>> > >>>>> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>> > >>>>> <mailto:fengwei.yin@... <mailto:fengwei.yin@...> > <mailto:fengwei.yin@... <mailto:fengwei.yin@...>>>>>>>> wrote: > >>>>> > > > > > >>>>> > > > > Hi Steve, > >>>>> > > > > > >>>>> > > > > On 2020/3/25 下午10:26, > Steve Osselton > >>>>> wrote: > >>>>> > > > > > Hi Binbin, > >>>>> > > > > > > >>>>> > > > > > Problem is that ctrl + > space doesn't > >>>>> switch to > >>>>> > > hypervisor, > >>>>> > > > if I > >>>>> > > > > press > >>>>> > > > > > return multiple times, > occasionally > >>>>> > > > > > I get the hypervisor > prompt, but if I > >>>>> then enter > >>>>> > > anything is > >>>>> > > > > passed to > >>>>> > > > > > the sos: > >>>>> > > > > > > >>>>> > > > > > iotech@nuc1 ~ $ > >>>>> > > > > > iotech@nuc1 ~ $ > >>>>> > > > > > iotech@nuc1 ~ $ > >>>>> > > > > > ACRN:\>version > >>>>> > > > > > version: command not found > >>>>> > > > > > iotech@nuc1 ~ $ version > >>>>> > > > > > version: command not found > >>>>> > > > > > iotech@nuc1 ~ $ > >>>>> > > > > > iotech@nuc1 ~ $ > >>>>> > > > > > >>>>> > > > > It looks like the physical > UART is used > >>>>> by HV > >>>>> > and SOS > >>>>> > > at the > >>>>> > > > same time. > >>>>> > > > > Per my experience, it's not > possible if the > >>>>> > UART port is > >>>>> > > > legacy UART. > >>>>> > > > > > >>>>> > > > > Could you please ssh to > your SOS and > >>>>> dump the dmesg > >>>>> > > after SOS > >>>>> > > > boot to > >>>>> > > > > a file, and share the file out? > >>>>> > > > > > >>>>> > > > > Regards > >>>>> > > > > Yin, Fengwei > >>>>> > > > > > >>>>> > > > > > > >>>>> > > > > > Cheers Steve > >>>>> > > > > > > >>>>> > > > > > On Wed, 25 Mar 2020 at > 14:12, Wu, Binbin > >>>>> > > > <binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>> > >>>>> > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>>> > >>>>> > > > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>>>> > >>>>> > > > > > > <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>>> > >>>>> > > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>> > >>>>> > > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> <mailto:binbin.wu@... <mailto:binbin.wu@...>>>> > >>>>> > <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>> > >>>>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>> <mailto:binbin.wu@... <mailto:binbin.wu@...> > <mailto:binbin.wu@... <mailto:binbin.wu@...>>>>>>>>> > >>>> wrote: > >>>>> > > > > > > >>>>> > > > > > Hi Steve,____ > >>>>> > > > > > > >>>>> > > > > > __ __ > >>>>> > > > > > > >>>>> > > > > > If you see the below > notation____ > >>>>> > > > > > > >>>>> > > > > > ACRN:\> ____ > >>>>> > > > > > > >>>>> > > > > > It means you have > switched to > >>>>> hypervisor > >>>>> > > console.____ > >>>>> > > > > > > >>>>> > > > > > You can set > hypervisor loglevel > >>>>> as Zide > >>>>> > > suggested.____ > >>>>> > > > > > > >>>>> > > > > > __ __ > >>>>> > > > > > > >>>>> > > > > > And yes, if you > switch to sos > >>>>> console, then > >>>>> > > both sos and > >>>>> > > > > hypervisor > >>>>> > > > > > log will show.____ > >>>>> > > > > > > >>>>> > > > > > If you switch to > hypervisor > >>>>> console, only > >>>>> > > hypervisor > >>>>> > > > log will > >>>>> > > > > show > >>>>> > > > > > up. ____ > >>>>> > > > > > > >>>>> > > > > > __ __ > >>>>> > > > > > > >>>>> > > > > > --____ > >>>>> > > > > > > >>>>> > > > > > BRs,____ > >>>>> > > > > > > >>>>> > > > > > Binbin____ > >>>>> > > > > > > >>>>> > > > > > __ __ > >>>>> > > > > > > >>>>> > > > > > From: > >>>>> acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > 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<mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>>> > >>>>> > > > > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>> > >>>>> > > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>>>> > >>>>> > > > > > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>> > >>>>> > > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>>> > >>>>> > > > > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>> > >>>>> > > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>> > >>>>> > <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>> > >>>>> <mailto:acrn-users@... <mailto:acrn-users@...> > <mailto:acrn-users@... <mailto:acrn-users@...>>>>>>>> > >>>>> > > > > > Subject: Re: > [acrn-users] > >>>>> Problem with > >>>>> > Industry > >>>>> > > > Scenario on a > >>>>> > > > > > NUC7i7DNH____ > >>>>> > > > > > > >>>>> > > > > > __ __ > >>>>> > > > > > > >>>>> > > > > > Hi Binbin,____ > >>>>> > > > > > > >>>>> > > > > > __ __ > >>>>> > > > > > > >>>>> > > > > > Ctrl + space does > not appear to > >>>>> work (have > >>>>> > > tried with both > >>>>> > > > > minicom > >>>>> > > > > > and gtkterm > clients).____ > >>>>> > > > > > > >>>>> > > > > > However sometimes > looks like serial > >>>>> > console is > >>>>> > > being > >>>>> > > > multiplexed > >>>>> > > > > > between both sos and > ACRN:____ > >>>>> > > > > > > >>>>> > > > > > > -- > Engineering Director > IOTech Systems Ltd. > -- Engineering Director IOTech Systems Ltd.
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