On Thu, Mar 23, 2017 at 4:11 PM, Ashish Gahlot <dreamashis...@gmail.com> wrote: > Actually, I'm trying to run two separate Qemu processes and the command line > argument is "qemu-system-x86_64 -kernel kernel -S -s" and the error which I > get on second invocation is > > qemu-system-x86_64: -s: Failed to bind socket: Address already in use
Please keep qemu-devel@nongnu.org CCed so that the conversation stays on the mailing list. This is expected behavior. The man page says: -s Shorthand for -gdb tcp::1234, i.e. open a gdbserver on TCP port 1234. Two processes cannot listen on the same port*, even with SO_REUSEADDR. Please specify unique port numbers using the longer syntax from the man page: $ qemu-system-x86_64 -kernel kernel -S -gdb tcp::1234 $ qemu-system-x86_64 -kernel kernel -S -gdb tcp::1235 Now you can tell gdb which QEMU instance to connect to. Stefan * There is a Linux-specific socket option for allowing multiple processes to listen on the same port but it's meant for load balancing and wouldn't help in this case.
