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Message-ID: <CAGXu5jLU=tbyCm2Jjjj1RshygiFEYMKNtbwPs6p-seCkJ2Ajdw@mail.gmail.com>
Date: Thu, 10 Dec 2015 11:45:35 -0800
From: Kees Cook <keescook@...omium.org>
To: "Schaufler, Casey" <casey.schaufler@...el.com>
Cc: "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
Catalin Marinas <catalin.marinas@....com>, PaX Team <pageexec@...email.hu>,
Michael Ellerman <mpe@...erman.id.au>, Heiko Carstens <heiko.carstens@...ibm.com>,
Ralf Baechle <ralf@...ux-mips.org>
Subject: Re: Self Introduction
On Thu, Dec 10, 2015 at 11:38 AM, Schaufler, Casey
<casey.schaufler@...el.com> wrote:
>> -----Original Message-----
>> From: keescook@...gle.com [mailto:keescook@...gle.com] On Behalf Of
>> Kees Cook
>> Sent: Thursday, December 10, 2015 11:24 AM
>> To: kernel-hardening@...ts.openwall.com
>> Cc: Catalin Marinas <catalin.marinas@....com>; PaX Team
>> <pageexec@...email.hu>; Michael Ellerman <mpe@...erman.id.au>; Heiko
>> Carstens <heiko.carstens@...ibm.com>; Ralf Baechle <ralf@...ux-mips.org>
>> Subject: Re: [kernel-hardening] Self Introduction
>>
>> On Thu, Dec 10, 2015 at 11:07 AM, Daniel Micay <danielmicay@...il.com>
>> wrote:
>> >> Yeah. PCID was Sandybridge and later?
>> >
>> > Yeah, that's right. And it defaults to the strong PCID implementation,
>> > but there's also a weaker but significantly faster PCID-based one.
>>
>> Is there anyone from Intel on the list? I would love to see UDEREF
>> ported to upstream on x86 (and the non PCID version too). No one has
>> stepped up to work on it yet.
>
> Yes, we're here. There are a couple things we need to do before making
> commitments on things, including deciding which are the most urgent
> from our perspective. We will be looking at what we want to do with
> UDEREF.
That's great! Thanks for speaking up. Another area that hasn't seen
any traction yet is PAX_USERCOPY. Valdis seems to be MIA, so I'd love
to see someone else take on that chunk of work.
-Kees
--
Kees Cook
Chrome OS & Brillo Security
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