CC linux-arch https://lkml.org/lkml/2013/12/11/141 On Tue, Jan 14, 2014 at 5:19 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote: > On 01/14/2014 05:17 AM, Geert Uytterhoeven wrote: >>> >>> This seems terribly broken, the *futex_value*() ops should not need >>> that; they are supposed to access userspace without any of that. >> >> Why don't they need set_fs(USER_DS)? > > Because USER_DS is the normal operating state? It would appear m68k is Is it? > the only(?) arch that calls initcalls with get_fs() == KERNEL_DS... On ARM: fs = 0x0, USER_DS = 0xbf000000, KERNEL_DS = 0x0 Presumably also on s390, as the fix for m68k broke s390. That's why it's still in -mm and not yet in mainline. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
