From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ivan Kelly Subject: Re: Updating built-in GDT Date: Tue, 24 Jan 2006 14:48:46 +0000 Message-ID: <20060124144840.GF6847@ivankelly.net> References: <20060123180155.GB6749@ivankelly.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org > You can't update the built-in GDT. Instead, create your own and pass > the list of MFNs that comprise your GDT to the set_gdt() hypercall. You > must ensure you have only read-only mappings of those MFNs before > passing them to that hypercall! If you wish to update your GDT, use the > update_descriptor() hypercall. does set_gdt add the default descriptors(at 819, 820, 821 etc) or will i have to insert these into my new gdt manually? Regards Ivan