Hi,
On 08/01/2024 23:56, Michele Pescapè wrote:
Hi all,
I have an AMD Ryzen 2600 on a b450 motherboard. My goal is to run two
non root linux cells, however, as of right now, I'm not able to start
any non root linux cells.
First of all I don't receive an output from the cell (I do get output
from the apic-demo though), therefore I don't really know if they're
even crashing or not; this is the output I get from the hypervisor after
enabling the root cell and issuing the following command:
sudo jailhouse cell linux configs/x86/linux_guest1.cell
../buildroot-2023.11/output/images/bzImage -i
../buildroot-2023.11/output/images/rootfs.cpio
for the first few tries, simply don't load a ramdisk. Try to get the
kernel booting. It will crash with "cannot mount rootfs". If we get so
far, then you can continue specifying the ramdisk. But first, we have to
get that far.
Adding PCI device ff:1f.7 to cell "linux-x86-demo"
Created cell "linux-x86-demo"
Page pool usage after cell creation: mem 336/32211, remap 16392/131072
Cell "linux-x86-demo" can be loaded
CPU 4 received SIPI, vector 100
CPU 3 received SIPI, vector 100
Started cell "linux-x86-demo"
After this the cell appears to be running in cell list, however I can't
seem to get any output to confirm that (I even set
JAILHOUSE_CELL_VIRTUAL_CONSOLE_ACTIVE, but nothing appears on the vrtual
console accessed via "jailhouse console -f"). I also tried adding -c
"console=ttyS0,115200".
ttyS0, i.e., x86 Port 0x3f8 is whitelisted in the cell configuration?
Actually, your cmdline is correct.
At this point if I try to disable/shutdown the cell, the system freezes
requiring a hard reset.
Okay, is the guest Linux compiled with Jailhouse guest support? Please
ensure that non-root Linux is compiled with CONFIG_JAILHOUSE_GUEST and
CONFIG_JAILHOUSE_DBCON. The first one is mandatory for x86 Linux guests.
Also, there seems to be a mismatch between the PCI bdf value in the log
above and the one in the cell's configuration. In both root and non root
cells i set .bdf = (0x0f << 3) for the IVSHMEM net device and the Root
cell correctly reports that ("Adding virtual PCI device 00:0f.0 to cell
"RootCell"").
First things first. Let's try to get Linux kicked off before diving into
PCI. Comment it out for the moment, let's do that later.
Ralf
If I understood correctly, once the cell works properly I won't need to
set the console anymore as I can assign an ip (-c "ip x.x.x.x" in the
cell linux command) and ssh to the cell, right?
I attach the root and non root cells' configurations in case they're
needed. I can provide both the root and non root cell's kernel .conf and
the buildroot configuration I used if needed.
Thank you for your time,
Michele
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