From: Tim Deegan <Tim.Deegan@eu.citrix.com>
To: Kieran Mansley <kmansley@solarflare.com>
Cc: xen-devel@lists.xensource.com
Subject: Re: Live migration with MMIO pages
Date: Thu, 1 Nov 2007 16:43:28 +0000 [thread overview]
Message-ID: <20071101164328.GD15566@york.uk.xensource.com> (raw)
In-Reply-To: <1193934965.4327.39.camel@moonstone.uk.level5networks.com>
At 16:36 +0000 on 01 Nov (1193934965), Kieran Mansley wrote:
> One question in my mind is whether the tests of iomem_access_permitted()
> in _sh_propogate() would be better replaced with the more general
> shadow_mode_translate(). The former seemed less risky to me as
You could do that. I think the correct test is shadow_mode_refcounts();
as Keir pointed out, guests whose refcounting isn't done by the shadow
code will have had their pagetables validated bby the PV MMU interface.
The test around the log-dirty code can just be on mfn_valid().
Cheers,
Tim.
--
Tim Deegan <Tim.Deegan@eu.citrix.com>
Principal Software Engineer, Citrix Systems.
[Company #5334508: XenSource UK Ltd, reg'd c/o EC2Y 5EB, UK.]
next prev parent reply other threads:[~2007-11-01 16:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-31 12:19 Live migration with MMIO pages Kieran Mansley
2007-10-31 13:32 ` Keir Fraser
2007-10-31 14:03 ` Kieran Mansley
2007-10-31 14:08 ` Keir Fraser
2007-10-31 16:34 ` Kieran Mansley
2007-10-31 16:44 ` Keir Fraser
2007-10-31 17:14 ` Kieran Mansley
2007-10-31 17:31 ` Tim Deegan
2007-10-31 18:23 ` Keir Fraser
2007-11-01 11:18 ` Kieran Mansley
2007-11-01 11:34 ` Tim Deegan
2007-11-01 16:36 ` Kieran Mansley
2007-11-01 16:43 ` Tim Deegan [this message]
2007-11-02 9:31 ` Kieran Mansley
2007-11-02 10:42 ` Keir Fraser
2007-11-02 10:51 ` Keir Fraser
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