Hi Peng,
On 28/02/2022 10:03, Peng Fan wrote:
Hi Jan, all
Qemu arm64 inmate linux and root cell linux share one hardware uart, right?
If right, how both linux share one uart, could you help explain more?
Define the memory region in both, the root and non-root cell, inside the
non-root cell, use the JAILHOUSE_MEM_ROOTSHARED flag. However, the IRQ
can not be assigned to both and will only arrive in one cell. Beware of
strange scenarios that may occur, when both cells try to access the same
physical device.
If it's just about the possibility of being able to write to the console
in the non-root cell, I'd prefer the putc-hypercall.
Thanks
Ralf
Thanks,
Peng.
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