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Date: Mon, 8 May 2017 15:43:28 +0200
From: Daniel Gruss <>
To: Mark Rutland <>
CC: David Gens <>,
        Thomas Garnier
        kernel list <>,
 Hardening" <>,
        <>, <>,
 Schwarz" <>,
        Richard Fellner
        "Kirill A. Shutemov"
        Ingo Molnar <>, <>
Subject: Re: [RFC, PATCH] x86_64: KAISER - do not map
 kernel in user mode

On 08.05.2017 15:22, Mark Rutland wrote:
> Specifically, I think this does not align with the statement in 2.1
> regarding the two TTBRs:
>   This simplifies privilege checks and does not require any address
>   translation for invalid memory accesses and thus no cache lookups.
> ... since the use of the TTBRs is orthogonal to privilege checks and/or
> the design of the TLBs.

Ok, this is a good point, we will try to clarify this in the paper.

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