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Subject: Re: [RFC PATCH v2 6/6] x86/entry/pti: don't switch PGD on when
 pti_disable is set
To: Borislav Petkov <bp@alien8.de>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
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From: Dave Hansen <dave.hansen@linux.intel.com>
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Date: Thu, 11 Jan 2018 11:17:01 -0800
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On 01/11/2018 11:07 AM, Borislav Petkov wrote:
> On Thu, Jan 11, 2018 at 10:57:51AM -0800, Dave Hansen wrote:
>> I'd love to have a tool that tells you for sure "KPTI enabled or not",
>> but I'd also love to have it be something I can easily distribute
>> without it being handled like a WMD.
> You mean this:
> 
> https://git.kernel.org/tip/87590ce6e373d1a5401f6539f0c59ef92dd924a9

I meant that works across all the kpti implementations.  Those with gunk
in /sys, /proc/cpuinfo, or with nothing at all like the original KAISER
patches I posted.

And, yes, I want a pony.  I just though someone had such a pony handy
and it was trivial.