![]() | |||||||||||||
Messages in this thread |
* Davide Libenzi <davidel@xmailserver.org> wrote: > [...] Status word and control bits should not be changed from > underneath userspace AFAIK. [...] Note that the control bits do not just magically change during normal FPU use. It's a bit like sys_setsid()/iopl/etc., it makes little sense to change those per-thread anyway. This is a non-issue anyway - what is important is that the big bulk of 512 (or more) bytes of FPU state /are/ callee-saved (both on 32-bit and on 64-bit), hence there's no need to unlazy anything or to do expensive FPU state saves or other FPU juggling around threadlet (or even syslet) use. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2007-03-03 08:31 [from the cache] ©2003-2008 | |||||||||||||