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SubjectRe: [RFC] x86: xsave/xrstor support, ucontext_t extensions
Mikael Pettersson wrote:
>
> An ugly workaround could be to start clearing one of these fields,
> and say that the data there is only valid for kernels >= 2.6.26.
> (I said it was ugly...)
>
> Or we go back to stashing a flag in uc_flags (which is kosher),
> and try to figure out how to mark non-rt sigframes.
>

Or use the OSXSAVE hack. Let me think about this for some time.

There is also the option of simply using a field guarded by a 64- or
128-bit magic number. It's a bit ugly, but it works.

-hpa


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