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From: David Howells <dhowells@redhat.com>
To: Casey Schaufler <casey@schaufler-ca.com>
Cc: dhowells@redhat.com, pnagar@codeaurora.org, arnd@arndb.de,
	jmorris@namei.org, serge@hallyn.com, paul@paul-moore.com,
	stephen.smalley.work@gmail.com, eparis@parisplace.org,
	linux-security-module@vger.kernel.org, selinux@vger.kernel.org,
	linux-arch@vger.kernel.org, psodagud@codeaurora.org,
	nmardana@codeaurora.org, dsule@codeaurora.org,
	Joe Perches <joe@perches.com>, Miguel Ojeda <ojeda@kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2] selinux: security: Move selinux_state to a separate page
Date: Wed, 13 Jan 2021 10:56:44 +0000	[thread overview]
Message-ID: <2646561.1610535404@warthog.procyon.org.uk> (raw)
In-Reply-To: <e6bd9820-8b77-57fc-f318-9b928e4d951b@schaufler-ca.com>

Casey Schaufler <casey@schaufler-ca.com> wrote:

> >> How would this interact with or complement __read_mostly?
> >>
> > Currently, the mechanism we are working on developing is
> > independent of __read_mostly. This is something we can look more into
> > while working further on the mechanism.
> 
> Please either integrate the two or explain how they differ.
> It appears that you haven't considered how you might exploit
> or expand the existing mechanism.

I think __read_mostly is about grouping stuff together that's rarely going to
be read to make the CPU's data cache more efficient.  It doesn't stop people
writing to such a variable.

David


  parent reply	other threads:[~2021-01-13 10:58 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-08  9:49 [RFC PATCH v2] selinux: security: Move selinux_state to a separate page Preeti Nagar
2021-01-08 15:25 ` Miguel Ojeda
2021-01-11  6:25   ` pnagar
2021-01-08 15:28 ` Miguel Ojeda
2021-01-08 17:11 ` Casey Schaufler
2021-01-12  9:36   ` pnagar
2021-01-12 17:06     ` Casey Schaufler
2021-01-13 10:56     ` David Howells [this message]
2021-01-18  6:15       ` pnagar
2021-01-09  1:01 ` Nick Desaulniers
2021-01-11  9:51   ` pnagar
2021-01-18  5:56 pnagar

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