[PATCH v5 1/2] x86-64: Save APX and Tile registers in ld.so trampoline

[Florian Weimer]

* H. J. Lu:

> Add APX registers to STATE_SAVE_MASK so that APX and Tile registers are
> saved in ld.so trampoline.  This fixes BZ #31371.

First APX is confusing?

What's the impact on xsave_state_size and xsave_state_full_size?
I'm worried that the loader trampoline now overflows small stacks.
We used to have such problems in the past.

Thanks,
Florian