From: Andi Kleen <ak@suse.de>
To: "bibo,mao" <bibo.mao@intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86_64 add NX mask for PTE entry
Date: Wed, 18 Oct 2006 12:58:45 +0200 [thread overview]
Message-ID: <200610181258.45176.ak@suse.de> (raw)
In-Reply-To: <4535F0A4.1090709@intel.com>
On Wednesday 18 October 2006 11:15, bibo,mao wrote:
> Hi,
> If function change_page_attr_addr calls revert_page to revert
> to original pte value, mk_pte_phys does not mask NX bit. If NX bit
> is set on no NX hardware supported x86_64 machine, there is will
> be RSVD type page fault and system will crash. This patch adds NX
> mask bit for PTE entry.
Hmm, weird. I wonder why that didn't trip up earlier. Did you
actually see that happening?
-Andi
next prev parent reply other threads:[~2006-10-18 10:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-18 9:15 [PATCH] x86_64 add NX mask for PTE entry bibo,mao
2006-10-18 10:58 ` Andi Kleen [this message]
2006-10-18 11:23 ` bibo,mao
2006-10-18 11:45 ` bibo,mao
2006-10-18 13:15 ` Andi Kleen
2006-10-19 1:35 ` bibo,mao
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