linux-kernel - Re: [PATCH 10/17] prmem: documentation

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Message-ID: <4e573601-dd5e-1fdf-da3a-df438e5b967d@huawei.com>
Date:   Tue, 13 Nov 2018 21:03:07 +0200
From:   Igor Stoppa <igor.stoppa@...wei.com>
To:     Andy Lutomirski <luto@...nel.org>
CC:     Nadav Amit <nadav.amit@...il.com>,
        Igor Stoppa <igor.stoppa@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        Matthew Wilcox <willy@...radead.org>,
        Dave Chinner <david@...morbit.com>,
        James Morris <jmorris@...ei.org>,
        "Michal Hocko" <mhocko@...nel.org>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        linux-integrity <linux-integrity@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Jonathan Corbet <corbet@....net>,
        Laura Abbott <labbott@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: [PATCH 10/17] prmem: documentation

On 13/11/2018 20:36, Andy Lutomirski wrote:
> On Tue, Nov 13, 2018 at 10:33 AM Igor Stoppa <igor.stoppa@...wei.com> wrote:

[...]

>> Unless the secondary mapping is also available to other cores, through
>> the shared mm_struct ?
>>
> 
> I don't think this matters much.  The other cores will only be able to
> use that mapping when they're doing a rare write.

Which has now been promoted to target for attacks :-)

--
igor