[arch-general] /dev/stdin /dev/stdout /dev/stderr in initrd/initramfs

hi list members, I don't have /dev/std* (eg. links to /proc/self/fd/{0,1,2}) that were present until a short time ago. is there any change on this side ? udev ? is it necessary to incorporate a particular kernel module in initrd/initramfs to find them again ? regards, lacsaP.