On Fri, 2006-02-24 at 08:35 +0100, Joerg Maier wrote: > i was wrong, i misread the first question, and he told me, GMP is in > userspace. by kernel "handling of the SIMD regs" he meant the switch from > one userspace task to another, i think. > > what do you mean by "in a limited context"? Can you use SIMD in kernel > code regs if you avoid preemtion?
You can if you are in a task context (not interrupt) and if you avoid preemption and other kind of scheduling. You need to explicitely call enable_kernel_altivec() before anything that touches a vector register though. Ben. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
