Re: [PATCH 15/22] x86/entry: Add TIF_NEED_FPU_LOAD

Sebastian Andrzej Siewior
2019-02-14T15:28:14Z

On 2019-02-13 10:35:53 [+0100], Borislav Petkov wrote:
…
> > + *
> > + * If TIF_NEED_FPU_LOAD is cleared then CPU's FPU registers are holding the
> > + * current content of current()'s FPU register state.
>
> "current content of current" - that's a lot of c...
>
> Make that
>
> "... then the CPU's FPU registers are mirrored in the current thread's
> FPU registers state."

Replaced `mirrored' with saved:

+ * If TIF_NEED_FPU_LOAD is cleared then the CPU's FPU registers are saved in
+ * the current thread's FPU registers state.
+ * If TIF_NEED_FPU_LOAD is set then CPU's FPU registers may not hold current()'s
+ * FPU registers. It is required to load the registers before returning to
+ * userland or using the content otherwise.

Sebastian