iwmmxt signal frame handling
arnd at arndb.de
Fri Oct 15 16:22:18 EDT 2010
On Friday 15 October 2010 20:38:15 Nicolas Pitre wrote:
> Hard to confirm. The only way not to have TIF_USING_IWMMXT set is to
> use old pre-EABI binaries, which are relying on the kernel emulated FPA
> instructions for floating point, and nothing in those days might have
> cared about extensions to the ucontext layout at all, or even have used
> iwmmxt. While this is a correctness fix, in practice this never
Ok, good to know.
> And we're talking about mixed ABI environments which existed many years
> ago, like prior the Git era. Hardly a stable tree candidate.
Yes, that's pretty clear then. I had assumed the TIF flag meant that
a particular process had been using IWMMXT, not that it was allowed
to do them.
Thanks for the explanation,
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