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libsdl2 currently does not handle the failures that occur due to shared memory in case of remote hosts where it should ideally switch to socket based writing when a failure is seen with shared memory. Consider a scenario where a qemu build is done with graphics support on a build machine and then accessed remotely using ssh. If the remote host's X presents MIT-SHM as an extension, launching qemu fails with runqemu - ERROR - Failed to run qemu: X Error: BadValue Request Major code 130 (MIT-SHM) Request Minor code 3 () This is most often seen when the remote machine doing ssh is a Ubuntu 20.04. The libsdl2 native are mainly used for qemu at this time so it is a major usecase. A report of such a failure was also presented at https://lists.yoctoproject.org/g/poky/topic/78854857 (From OE-Core rev: d12306a6331238a25db52816ad74a775c026d7da) Signed-off-by: Awais Belal <awais_belal@mentor.com> 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.