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Re: [Xen-devel] [PATCHv3 1/3] x86/fpu: improve check for XSAVE* not writing FIP/FDP fields
>>> On 25.02.16 at 14:16, <andrew.cooper3@xxxxxxxxxx> wrote:
> No OS is plausibly going to hide non-IP information in FIP.
>
> If some theoretical OS does do something like that, there is always the
> override available.
But who says it needs to be an OS to do so? User mode code could
as much (and would imo even be more likely to do so, compared to
an OS).
Jan
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