From: Ingo Molnar <mingo@elte.hu>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: "Huang, Ying" <ying.huang@intel.com>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>, Andi Kleen <ak@suse.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/6] x86: fix NX bit handling in change_page_attr
Date: Fri, 25 Jan 2008 11:32:57 +0100 [thread overview]
Message-ID: <20080125103256.GR23708@elte.hu> (raw)
In-Reply-To: <20080125084633.GA23708@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> ...
> + ref_prot = pte_pgprot(pte_mkexec(pte_clrhuge(*kpte)));
>
> i.e. it now goes through all the proper accessors.
i guess it would be nicer to have the proper accessors to just clear the
NX bit from ref-prot - instead of re-constructing the *kpte from
scratch. But i see no other way to do it right now than to access
pgprot_val() as an lvalue. Jeremy, what would be the best approach here?
Ingo
next prev parent reply other threads:[~2008-01-25 10:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 5:54 [PATCH 1/6] x86: fix NX bit handling in change_page_attr Huang, Ying
2008-01-25 7:32 ` Jeremy Fitzhardinge
2008-01-25 8:46 ` Ingo Molnar
2008-01-25 10:32 ` Ingo Molnar [this message]
2008-01-25 20:05 ` Jeremy Fitzhardinge
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