On 01.03.19 09:56, [email protected] wrote:
Hello,
I've got most everything working with ivshmem: the inmate is modifying shared
memory and sending interrupts to the root cell, the root cell is receiving the
interrupts and seeing the shared memory and PCI config space, and the root is
writing to shared memory, which the inmate sees.
However, I'm having a hard time getting the root cell to send interrupts back
to the inmate via the ivshmem PCI device. I've tried writing to both the
doorbell and lstate registers, with no success.
Do you have any general tips on what I can do to debug the interrupt path from
root cell to inmate? What configs do I need to match up? (IRQ vectors?) How do
I know what values to write to the doorbell or lstate registers?
You are on x86? Try using a different .iommu ID (typically 1, check what others
exit) in the jailhouse_pci_device for ivshmem.
Jan
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
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