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SubjectRe: timer + fpu stuff locks my console race
From
> --- linux-2.6.6/include/asm-i386/i387.h.fp-lockup	2004-05-10 06:33:06
> +0400
> +++ linux-2.6.6/include/asm-i386/i387.h 2004-06-12 17:25:56 +0400
> @@ -51,7 +51,6 @@
> #define __clear_fpu( tsk ) \
> do { \
> if ((tsk)->thread_info->status & TS_USEDFPU) { \
> - asm volatile("fwait"); \
> (tsk)->thread_info->status &= ~TS_USEDFPU; \
> stts(); \
> } \

But what about task-switching and fpu-exceptions that comes in late? I
know that the kernel does not use FPU in general, and the places it does,
fsave, fwait and frstor embeddes it all in kernel-space.


Stian Skjelstad
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