Andi Kleen wrote:
Avi Kivity <[email protected]> writes:
>
> It's also broken for x86-64, which uses sse for floating point, not
> the x87 fpu.
Sorry, that doesn't make sense.
> > kernel_fpu_begin();
> > c = d * 3.14;
> > kernel_fpu_end();
Cannot work on x86-64, even disregarding fp exceptions, because
kernel_fpu_begin() doesn't save the sse state which is used by fp math.
No?
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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