Re: [Xen-devel] fsincos emulation on AMD CPUs

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.12.11 at 13:33, Keir Fraser <keir@xxxxxxx> wrote:
> More detail: the full patch is ugly and hard to test all cases. And there's
> no practical scenario where we want to emulate FSINCOS on AMD -- we don't
> emulate realmode on AMD, FSINCOS on a shadowed page certainly indicates that
> we should unshadow the page, FSINCOS on MMIO is mad or malicious.

Those latter two cases can't really happen, as fsincos has no memory
operand.

Jan


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