linux-kernel - Re: [PATCH V8 03/44] x86/pkeys: Create pkeys

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Date:   Fri, 28 Jan 2022 14:43:54 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     ira.weiny@...el.com, Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Dan Williams <dan.j.williams@...el.com>
Cc:     Fenghua Yu <fenghua.yu@...el.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V8 03/44] x86/pkeys: Create pkeys_common.h

On 1/27/22 09:54, ira.weiny@...el.com wrote:
> From: Ira Weiny <ira.weiny@...el.com>
> 
> Protection Keys User (PKU) and Protection Keys Supervisor (PKS) work in
> similar fashions and can share common defines.  Specifically PKS and PKU
> each have:
> 
> 	1. A single control register
> 	2. The same number of keys
> 	3. The same number of bits in the register per key
> 	4. Access and Write disable in the same bit locations
> 
> Given the above, share all the macros that synthesize and manipulate
> register values between the two features.  Share these defines by moving
> them into a new header, change their names to reflect the common use,
> and include the header where needed.

I'd probably include *one* more sentence to prime the reader for the
pattern they are about to see.  Perhaps:

	This mostly takes the form of converting names from the PKU-
	specific "PKRU" to the U/S-agnostic "PKR".

> Also while editing the code remove the use of 'we' from comments being
> touched.
> 
> NOTE the checkpatch errors are ignored for the init_pkru_value to
> align the values in the code.
> 
> Signed-off-by: Ira Weiny <ira.weiny@...el.com>

Either way, this looks fine:

Acked-by: Dave Hansen <dave.hansen@...ux.intel.com>