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On python versions with close_fds=True (python 3.2 onwards), the tap device lockfile isn't passed to the child process. Since this guards against use of an active interface, we really want this here, so pass it in pass_fds. This means if the parent exits early, the child still holds the lock, avoiding messages like: runqemu - ERROR - Failed to run qemu: qemu-system-x86_64: could not configure /dev/net/tun (tap0): Device or resource busy (From OE-Core rev: 17a0a067d597c445c5892ff9914e91a2187f7e09) (From OE-Core rev: 1d03e0d54863124c5a65b59ecdc76dbac13d312a) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.