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Date:   Mon, 15 Jul 2019 12:39:38 -0700
From:   Andi Kleen <ak@linux.intel.com>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     Uros Bizjak <ubizjak@gmail.com>, linux-kernel@vger.kernel.org,
        x86@kernel.org, Andrew Lutomirski <luto@kernel.org>
Subject: Re: [RFC PATCH, x86]: Disable CPA cache flush for selfsnoop targets
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> Right, we don't know where the PAT invocation comes from and whether they
> are safe to omit flushing the cache. The module load code would be one
> obvious candidate.

Module load just changes the writable/executable status, right? That shouldn't
need to flush in any case because it doesn't change the caching attributes.

-Andi