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Re: [Xen-devel] Error restoring DomU when using GPLPV

To: "mukesh.rathor@xxxxxxxxxx" <mukesh.rathor@xxxxxxxxxx>
Subject: Re: [Xen-devel] Error restoring DomU when using GPLPV
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Sat, 05 Sep 2009 07:49:27 +0100
Cc: Joshua West <jwest@xxxxxxxxxxxx>, James Harper <james.harper@xxxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
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On 05/09/2009 05:02, "Mukesh Rathor" <mukesh.rathor@xxxxxxxxxx> wrote:

>> The bit of code in 3.3's xc_domain_save.c that is commented "Skip PFNs that
>> aren't really there" is removed in 3.4. That will be the reason.
> 
> I started looking at this couple days ago, and finally understand
> what's going on. In our case, win migration/save-restore just fails, as
> Annie/Wayne had posted.
> 
> In the short run, since frames for vga etc are skipped anyways, can we
> just put the above change back in libxc (xen 3.4) and be ok?

I don't think vga frames are skipped. I think vga now gets saved by
xc_domain_save.

Also some real RAM is up in that area these days. Like ACPI tables for
example.

 -- Keir



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