linux-kernel - Re: [PATCH V8 02/44] Documentation/protection-keys: Clean up documentation for User Space pkeys

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Message-ID: <20220201234947.GS785175@iweiny-DESK2.sc.intel.com>
Date:   Tue, 1 Feb 2022 15:49:47 -0800
From:   Ira Weiny <ira.weiny@...el.com>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V8 02/44] Documentation/protection-keys: Clean up
 documentation for User Space pkeys

On Fri, Jan 28, 2022 at 02:39:10PM -0800, Dave Hansen wrote:
> On 1/27/22 09:54, ira.weiny@...el.com wrote:
> > +PKeys Userspace (PKU) is a feature which is found on Intel's Skylake "Scalable
> > +Processor" Server CPUs and later.  And it will be available in future
> > +non-server Intel parts and future AMD processors.
> 
> The non-server parts are quite available these days.  I'm typing on one
> right now:
> 
> 	model name	: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
> 
> This can probably say:
> 
> Protection Keys for Userspace (PKU) can be found on:
>  * Intel server CPUs, Skylake and later
>  * Intel client CPUs, Tiger Lake (11th Gen Core) and later
>  * Future AMD CPUs
> 
> It would be great if the AMD folks can elaborate on that a bit, but I
> understand it might not be possible if the CPUs aren't out yet.

Updated.

But I'm leery about putting in any information about AMD CPU's.  Who could I
ask directly?

Ira