This serie of patches has already been sent, more or less, several time, last time in july 2011.
For chrooted environment, it allows to define the default cpu model as we can't use '-cpu' argument. For instance: ./configure --target-list=m68k-linux-user,arm-linux-user \ --m68k-default-cpu=m5206 --arm-default-cpu=sa1100 ./m68k-linux-user/qemu-m68k -cpu ? >m5206 m5208 cfv4e any ./arm-linux-user/qemu-arm -cpu ? Available CPUs: arm926 arm946 arm1026 arm1136 arm1136-r2 arm1176 arm11mpcore cortex-m3 cortex-a8 cortex-a9 ti925t pxa250 >sa1100 sa1110 pxa255 pxa260 pxa261 pxa262 pxa270 pxa270-a0 pxa270-a1 pxa270-b0 pxa270-b1 pxa270-c0 pxa270-c5 any [PATCH 1/4] linux-user: define default cpu model in configure [PATCH 2/4] linux-user: specify the cpu model during configure [PATCH 3/4] linux-user,m68k: display default cpu [PATCH 4/4] linux-user,arm: display default cpu