On 21.07.20 13:30, [email protected] wrote:
Hej,
looking for a hint / tip where I may go wrong.
Without pouring the whole config here,
I am on a real box, x86_64 (Intel Apollo Lake), Jailhouse-images is
next, building --latest.
I have a an ivshmem-net defined between the root cell and the first
non-root Linux, and another one between the first NR-Linux and a second
NR-Linux. The second one between the NR-Ls is working smoothly fine.
However, I cannot get the first one up. Jailhouse-console-ivshmem says
the cells are connected, In Linux the device comes up fine with mem and
alike, but the stats stay at zero, no carrier detected. I have checked
the configs to my best knowledge, mem-regions + devices look right. Any
classic pitfalls? Could this be an IRQ issue / misconfiguration?
Sounds a lot like an IRQ delivery issue. You can check that via
/proc/interrupts. At the point both peers are up, they should also see
config IRQs (first vector). If not, check if you have assigned the right
IOMMU ID to the virtual PCI device in the root cell (use ID 1 if none or
0 was used so far). See also
jailhouse-images/recipes-jailhouse/jailhouse/files/nuc6cay.c.
Jan
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
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