Hello,
On 26/2/24 11:58, ankita suman wrote:
Hello,
I am trying to emulate multi core processor (dual core for now) on QEMU.
The processor I am targeting is cortex m7. I tried by running multiple
instances of QEMU to emulate multi cores, and use shared memory for
communication, but since I am working on a bare metal environment, I
don't have the options of libraries for synchronization.
Have a look at the 'fby35' machine in hw/arm/fby35.c, it uses
a pair of Aspeed ast1030 and ast2600 ARM cores.
Another approach I tried was using inter VM shared memory(ivshmem). But
I am facing the same problem. I am able to write and read from the
ivshmem device from two different QEMU instances, but it is not working
for ARM.
Cc'ing Gustavo who worked on something similar and posted ivshmem
patches:
https://lore.kernel.org/qemu-devel/20240222222218.2261956-1-gustavo.rom...@linaro.org/
can someone please guide me on how to proceed and what is the best
approach? If there are library support in QEMU for multi core emulation,
kindly let me know, that would be helpful as well.
Regards,
Phil.
