From: Ivan Kelly <ivan@ivankelly.net>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: xen-devel@lists.xensource.com
Subject: Re: Updating built-in GDT
Date: Tue, 24 Jan 2006 11:47:23 +0000 [thread overview]
Message-ID: <20060124114702.GA3551@ivankelly.net> (raw)
In-Reply-To: <b4f4aafc48348605504d8e1c62e188e7@cl.cam.ac.uk>
On Tue, Jan 24, 2006 at 11:35:05AM +0000, Keir Fraser wrote:
> 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.
I ended up taking this approach, though i've yet to get it to work. With
update_descriptor the first argument is a machine address. Should this be the
machine frame number + offset of entry?
Regards
Ivan
next prev parent reply other threads:[~2006-01-24 11:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-23 18:02 Updating built-in GDT Ivan Kelly
2006-01-24 11:35 ` Keir Fraser
2006-01-24 11:47 ` Ivan Kelly [this message]
2006-01-24 12:04 ` Keir Fraser
2006-01-24 12:02 ` Ivan Kelly
2006-01-24 12:15 ` Keir Fraser
2006-01-24 14:48 ` Ivan Kelly
2006-01-24 16:15 ` Keir Fraser
-- strict thread matches above, loose matches on Subject: below --
2006-01-24 12:08 Petersson, Mats
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