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

[Roland McGrath]

> 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?


Thanks,
Roland
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