linux-kernel - Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5601B893.8050301@sr71.net>
Date:	Tue, 22 Sep 2015 13:22:43 -0700
From:	Dave Hansen <dave@...1.net>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU

On 09/22/2015 01:05 PM, Thomas Gleixner wrote:
> On Wed, 16 Sep 2015, Dave Hansen wrote:
>> This adds the raw instructions to access PKRU as well as some
>> accessor functions that correctly handle when the CPU does
>> not support the instruction.  We don't use them here, but
>> we will use read_pkru() in the next patch.
>>
>> I do not see an immediate use for write_pkru().  But, we put it
>> here for partity with its twin.
> 
> So that read_pkru() doesn't feel so lonely? I can't follow that logic.

I was actually using it in a few places, but it fell out of later
versions of the patch.  I'm happy to kill it.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/