Re: [RFC] x86: xsave/xrstor support, ucontext_t extensions

[H. Peter Anvin]

Roland McGrath wrote:
> > Yes, but I suspect for legacy apps running without vDSO might matter.
>
> "Legacy" apps want to be changed to make a new kind of kernel query
> and care about new details of signal frame layout for new features
> they never used before, but don't want to handle the vDSO?

I'm talking mostly about semi-embedded ISVs that have managed to get 
themselves funny ideas about what they don't want to change.  The vDSO 
definitely involves more machinery to get to.

	-hpa
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