Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit?

On Tue, Jan 12, 2016 at 02:38:20PM +0100, Ingo Molnar wrote:

quoted

On Fri, Dec 18, 2015 at 12:59:14AM -0800, Christoph Hellwig wrote:

quoted

Stupid question, but what the heck is PKRU?  A grep of the kernel tree
shows no results, and a web search returns mostly Thai language results.

That should explain it:

https://lkml.kernel.org/r/20151214190542.39C4886D@viggo.jf.intel.com

There's also an LWN article from last year, as background:

  https://lwn.net/Articles/643797/

I had actually seen both the thread and the article before, but the
"PKRU" subject didn't really lead to either..