From: Andi Kleen <ak@suse.de>
To: "bibo,mao" <bibo.mao@intel.com>
Subject: Re: [PATCH] x86_64 add NX mask for PTE entry
Date: Wed, 18 Oct 2006 15:15:25 +0200
User-Agent: KMail/1.9.3
Cc: linux-kernel@vger.kernel.org
References: <4535F0A4.1090709@intel.com> <45360E99.7020001@intel.com> <453613F6.7020800@intel.com>
In-Reply-To: <453613F6.7020800@intel.com>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200610181515.25372.ak@suse.de>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 655
Lines: 16

On Wednesday 18 October 2006 13:45, bibo,mao wrote:
> Also I think change_page_attr is buggy. if orginal page is not
> large page, when that page's previous attr is reverted revert_page()
> function will be called to make that page huge. Indeed I think
> there is no need to do this.

On x86-64 all pages in the direct mapping are initially large pages.
On i386 not necessarily, but it deals with that.

-Andi

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/