On Thursday 16 August 2012, Will Deacon wrote: > > This looks wrong: PER_LINUX/PER_LINUX32 decides over the output of the > > uname system call, while TIF_32BIT decides over the instruction set > > when returning to user space. You definitely should not set the personality > > to the value you pass from the elf loader. Instead, just do > > > > #define SET_PERSONALITY(ex) clear_thread_flag(TIF_32BIT); > > #defined COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); > > In this case, won't uname be incorrect (aarch64l) for aarch32 tasks (which > expect something like armv8l)? No, the uname output is meant to tell you about the system, not the instruction set that you are using (you already know that in compiled code). The main use case is to fool stuff like autoconf into assuming your architecture is the other one, e.g. when building a 32 bit package on using a 64 bit /bin/bash to run ./configure or vice versa. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
