linux-kernel - Re: [PATCH 05/29] x86/fpu: add might_fault() to user

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Message-ID: <acc97851fe8f8d46a684e7b6255eded48cce29b7.camel@surriel.com>
Date:   Wed, 28 Nov 2018 20:54:36 -0500
From:   Rik van Riel <riel@...riel.com>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, Andy Lutomirski <luto@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        kvm@...r.kernel.org, "Jason A. Donenfeld" <Jason@...c4.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH 05/29] x86/fpu: add might_fault() to user_insn()

On Wed, 2018-11-28 at 23:20 +0100, Sebastian Andrzej Siewior wrote:
> Every user of user_insn() passes an user memory pointer to this
> macro.
> 
> Add might_fault() to user_insn() so we can spot users which are using
> this macro in sections where page faulting is not allowed.

Nice catch.

> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Reviewed-by: Rik van Riel <riel@...riel.com>

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