Re: [PATCH v10 4/4] x86: vdso: Wire up getrandom() vDSO implementation

Thomas Gleixner
2022-11-29T22:52:08Z

On Tue, Nov 29 2022 at 22:06, Jason A. Donenfeld wrote:
> Hook up the generic vDSO implementation to the x86 vDSO data page. Since
> the existing vDSO infrastructure is heavily based on the timekeeping
> functionality, which works over arrays of bases, a new macro is
> introduced for vvars that are not arrays.
>
> The vDSO function requires a ChaCha20 implementation that does not write
> to the stack, yet can still do an entire ChaCha20 permutation, so
> provide this using SSE2, since this is userland code that must work on
> all x86-64 processors.

Way more consumable and looks about right. Please take your time and
give others a chance to look at this lot before rushing out v11.

Thanks,

tglx