Re: [PATCH 0/9] rework of extended state handling, LWP support

Andi Kleen
2011-11-29T21:31:14Z

Hans Rosenfeld <hans.rosenfeld@amd.com> writes:
>
> The lazy allocation of the xstate area has been removed. The support for
> extended states that cannot be saved/restored lazily, like AMD's LWP,
> need this. Since optimized library functions using SSE etc. are widely
> used today, most processes would have an xstate area anyway, making the
> memory overhead negligible.

Do you have any data on that? It sounds dubious for specialized
workloads.

-Andi

--
ak@linux.intel.com -- Speaking for myself only